CN109299509A - The design method and design device, computer readable storage medium of front hatch cover - Google Patents
The design method and design device, computer readable storage medium of front hatch cover Download PDFInfo
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- CN109299509A CN109299509A CN201810977850.5A CN201810977850A CN109299509A CN 109299509 A CN109299509 A CN 109299509A CN 201810977850 A CN201810977850 A CN 201810977850A CN 109299509 A CN109299509 A CN 109299509A
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- 238000013461 design Methods 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003860 storage Methods 0.000 title claims abstract description 25
- 238000005457 optimization Methods 0.000 claims abstract description 67
- 238000011960 computer-aided design Methods 0.000 claims abstract description 27
- 238000004458 analytical method Methods 0.000 claims abstract description 24
- 238000000465 moulding Methods 0.000 claims description 23
- 238000012545 processing Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 9
- 238000012986 modification Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 8
- 238000012797 qualification Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 4
- 241000208340 Araliaceae Species 0.000 claims description 3
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 3
- 235000008434 ginseng Nutrition 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 15
- 230000036961 partial effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004080 punching Methods 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000013401 experimental design Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
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- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 238000013400 design of experiment Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention discloses a kind of design methods of front hatch cover and design device, computer readable storage medium, belong to field of automobile.The design method includes the first parameterized model for obtaining the front hatch cover of the first vehicle；Determine the value range of the design variable of the front hatch cover of the first vehicle and the design variable of front hatch cover；The value range of the design variable of performance indicator and front hatch cover based on front hatch cover, optimizes the design variable of the front hatch cover of the first parameterized model, obtains the second parameterized model；Computer Aided Design Model is constructed according to the second parameterized model；Computer-aided engineering analysis is carried out to Computer Aided Design Model.It is established due to CAD model not according to experience, but obtained according to the second parameterized model after optimization, second parameterized model is obtained according to the first parameterized model, therefore the performance indicator for the CAD model established for the first time is just likely to qualified, without correcting CAD model repeatedly.
Description
Technical field
The present invention relates to field of automobile, in particular to a kind of design method of front hatch cover and design device, meter
Calculation machine readable storage medium storing program for executing.
Background technique
Front hatch cover, also known as bonnet are the important composition components of automobile.For different vehicles, the moulding of front hatch cover with
And performance indicator all may be different.When carrying out the design of front hatch cover, it will usually first empirically established CAD (Computer
Aided Design；CAD) model；Analysis verifying is carried out to CAD model again, determines in CAD model and respectively designs
Whether variable is suitable；If improper, modified according to the result of analysis verifying to CAD model；Again to modified CAD mould
Type carries out analysis verifying, so recycles, until CAD model meets design requirement.
Since CAD model is in modification, structure at every modification one, all structures being associated require to modify,
The modification amount of CAD model is very big.Therefore this analysis repeatedly is verified, the design method of the front hatch cover of amendment CAD model is imitated
Rate is lower.
Summary of the invention
The embodiment of the invention provides a kind of design method of front hatch cover and device, computer readable storage medium are designed,
It is able to ascend the efficiency of front hatch cover design.The technical solution is as follows:
On the one hand, the embodiment of the invention provides a kind of design methods of front hatch cover, comprising:
The first parameterized model of the front hatch cover of the first vehicle is obtained, the first parameterized model of first vehicle is base
It is constructed in the finite element model of the front hatch cover of first vehicle, alternatively, the first parameterized model of first vehicle is
Modification obtains on the basis of the parameterized model of the front hatch cover of the second vehicle；
Determine the value range of the design variable of the front hatch cover of first vehicle and the design variable of the front hatch cover；
The value range of the design variable of performance indicator and the front hatch cover based on the front hatch cover, to first ginseng
The design variable of the front hatch cover of numberization model optimizes, and obtains the second parameterized model；
Computer Aided Design Model is constructed according to second parameterized model；
Computer-aided engineering analysis is carried out to the Computer Aided Design Model, to detect the performance of the front hatch cover
Index,
When the performance indicator qualification of the front hatch cover, using the Computer Aided Design Model as first vehicle
Front hatch cover final mask.
Optionally, the first parameterized model of the front hatch cover for obtaining the first vehicle, comprising:
The front hatch cover of determining first vehicle is required according to the moulding of first vehicle and enging cabin space layout
Design space；
Establish the finite element model of the front hatch cover in the design space, the front hatch cover includes outside plate and inner panel,
The inner panel includes multiple floors between frame and the side for being connected to the frame；
Structure optimization is carried out to the frame；
Based on the finite element model after the structure optimization, topological optimization is carried out to the multiple floor；
Based on the finite element model after the topological optimization, the first parameterized model is constructed, alternatively,
Obtain the parameterized model of the front hatch cover of second vehicle；
The outside plate of the parameterized model of the front hatch cover of second vehicle is adjusted according to the moulding of first vehicle, with
To first parameterized model.
It is optionally, described that structure optimization is carried out to the frame, comprising:
Based on the finite element model, with the mode of the front hatch cover, the rigidity of the front hatch cover, the frame it is rigid
The rigidity of the installation point of degree, the front hatch cover is constraint condition, with the minimum target of the weight of the front hatch cover to the frame
Carry out structure optimization.
It is optionally, described that topological optimization is carried out to the multiple floor, comprising:
With the mode of the front hatch cover, the rigidity of the front hatch cover, the rigidity of the frame, the installation point of the front hatch cover
Rigidity, the front hatch cover head touch area depression amount be constraint condition, with the minimum target of the weight of the front hatch cover to institute
It states multiple floors and carries out topological optimization.
Optionally, the performance indicator of the front hatch cover include the mode of the front hatch cover, it is the rigidity of the front hatch cover, described
The rigidity of frame, the rigidity of the installation point of the front hatch cover, the front hatch cover head touch area depression amount, the front hatch cover it is anti-
At least one of concavity.
Optionally, further includes:
It when the performance indicator of the front hatch cover is unqualified, repeats the steps of, until the performance indicator of the front hatch cover
It is qualified:
It determines the design variable of the front hatch cover of increased first vehicle and/or determines the front hatch cover adjusted
The value range of design variable；
The value range of the design variable of the front hatch cover of performance indicator and first vehicle based on the front hatch cover is right
The design variable of the front hatch cover of first parameterized model optimizes, and obtains third parameterized model；
Computer Aided Design Model is constructed according to the third parameterized model；
Computer-aided engineering analysis is carried out to the Computer Aided Design Model, to detect the performance of the front hatch cover
Index.
On the other hand, the embodiment of the invention also provides a kind of design devices of front hatch cover, comprising:
Acquisition module, the first parameterized model of the front hatch cover for obtaining the first vehicle, the first of first vehicle
Parameterized model is that the finite element model of the front hatch cover based on first vehicle constructs, alternatively, the of first vehicle
One parameterized model is to modify to obtain on the basis of the parameterized model of the front hatch cover of the second vehicle；
Determining module, for determining the design variable of the front hatch cover of first vehicle and the design variable of the front hatch cover
Value range；
Optimization module, the value model of the design variable for performance indicator and the front hatch cover based on the front hatch cover
It encloses, the design variable of the front hatch cover of first parameterized model is optimized, the second parameterized model is obtained；
Module is constructed, for constructing Computer Aided Design Model according to second parameterized model；
Processing module, for carrying out computer-aided engineering analysis to the Computer Aided Design Model, to detect
The performance indicator for stating front hatch cover, when the performance indicator qualification of the front hatch cover, using the Computer Aided Design Model as
The final mask of the front hatch cover of first vehicle.
Optionally, the acquisition module includes:
Space determination unit, for being required described in determination according to the moulding of first vehicle and enging cabin space layout
The design space of the front hatch cover of first vehicle；
Finite element model unit, for establishing the finite element model of the front hatch cover in the design space, before described
Hatchcover includes outside plate and inner panel, and the inner panel includes multiple floors between frame and the side for being connected to the frame；
Optimize unit, for carrying out structure optimization to the frame, based on the finite element mould after the structure optimization
Type carries out topological optimization to the multiple floor；
Construction unit, for based on the finite element model after the topological optimization, constructing the first parameterized model, or
Person, the acquisition module include:
Acquiring unit, the parameterized model of the front hatch cover for obtaining second vehicle；
Adjustment unit, the parametrization mould of the front hatch cover for adjusting second vehicle according to the moulding of first vehicle
The outside plate of type, to obtain first parameterized model.
It optionally, further include control module, for controlling the determining module, the optimization module, the building module
With the processing module, until the performance indicator of the front hatch cover is qualified:
The determining module is also used to determine the design variable of the front hatch cover of increased first vehicle and/or determines and adjusts
The value range of the design variable of the front hatch cover after whole；
The optimization module is also used to setting for the front hatch cover of performance indicator and first vehicle based on the front hatch cover
The value range for counting variable, optimizes the design variable of the front hatch cover of first parameterized model, obtains third
Parameterized model；
The building module is also used to construct Computer Aided Design Model according to the third parameterized model；
The processing module is also used to carry out computer-aided engineering analysis to the Computer Aided Design Model, with inspection
Survey the performance indicator of the front hatch cover.
Another aspect is deposited in the storage medium the embodiment of the invention also provides a kind of computer readable storage medium
At least one instruction is contained, described instruction is loaded by processor and executed the design method to realize front hatch cover above-mentioned.
Technical solution bring beneficial effect provided in an embodiment of the present invention includes at least: before obtaining the first vehicle
First parameterized model of hatchcover, determines the value range of the design variable of front hatch cover and the design variable of front hatch cover, so as to
With the value range of the design variable of performance indicator and front hatch cover based on front hatch cover, to the front hatch cover of the first parameterized model
Design variable optimizes, and establishes out CAD model according to the second parameterized model later.It can be carried out after establishing CAD model
CAE(Computer Aided Engineering；Computer-aided engineering) analysis, the performance indicator of front hatch cover is detected, if
Performance indicator is qualified, then the CAD model can be used as the final mask of front hatch cover.Since CAD model is not according to experience foundation
, but obtained according to the second parameterized model after optimization, and the second parameterized model is obtained according to the first parameterized model
It arrives, the first parameterized model is that the finite element model of the front hatch cover based on the first vehicle constructs, alternatively, the first of the first vehicle
Parameterized model is to modify to obtain on the basis of the parameterized model of the front hatch cover of the second vehicle, therefore establish for the first time
The performance indicator of CAD model is just likely to qualified, without correcting CAD model repeatedly.Compared to correcting CAD repeatedly
Model greatly reduces the workload of CAD engineer, improves the efficiency of front hatch cover design.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of design method flow chart of front hatch cover provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of front hatch cover for obtaining the first vehicle provided in an embodiment of the present invention；
Fig. 3 is a kind of partial schematic diagram of the moulding of first vehicle provided in an embodiment of the present invention；
Fig. 4 is a kind of bottom view of design space provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another front hatch cover for obtaining the first vehicle provided in an embodiment of the present invention；
Fig. 6 is a kind of partial structural diagram of inner panel provided in an embodiment of the present invention；
Fig. 7 is a kind of optimized flow chart of multi-parameter provided in an embodiment of the present invention；
Fig. 8 is a kind of schematic diagram of final mask provided in an embodiment of the present invention；
Fig. 9 is a kind of design method flow chart of front hatch cover provided in an embodiment of the present invention；
Figure 10 is a kind of structural block diagram of the design device of front hatch cover provided in an embodiment of the present invention；
Figure 11 is a kind of structural block diagram for obtaining module provided in an embodiment of the present invention；
Figure 12 is another structural block diagram for obtaining module provided in an embodiment of the present invention；
Figure 13 is a kind of structural schematic diagram of the design device of front hatch cover provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment to facilitate the understanding of the present invention is below first briefly described structure optimization.
Structure optimization may include topological optimization and topography optimization.Wherein, topological optimization be according to given loading condition,
Constraint condition and performance indicator are distributed the method optimized to material in given region, deposit during topological optimization
In the increase and deletion to material.Topography optimization be according to loading condition, constraint condition and performance indicator, to the shape of floor into
The method of row optimization, there is no the increases and deletion to material during topography optimization.
Fig. 1 is a kind of design method flow chart of front hatch cover provided in an embodiment of the present invention.As shown in Figure 1, the design side
Method includes:
S11: the first parameterized model of the front hatch cover of the first vehicle is obtained.
Wherein, the first parameterized model of the first vehicle is the finite element model building of the front hatch cover based on the first vehicle
, alternatively, the first parameterized model of the first vehicle is modified on the basis of the parameterized model of the front hatch cover of the second vehicle
It obtains.
Fig. 2 is a kind of flow chart of front hatch cover for obtaining the first vehicle provided in an embodiment of the present invention.As shown in Fig. 2, should
Method includes:
S111: setting for the front hatch cover for determining the first vehicle is required according to the moulding of the first vehicle and enging cabin space layout
Count space.
In Car design, the moulding of vehicle can be first designed.After the moulding of vehicle determines, the outer surface of front hatch cover
Shape and the position of outer surface determine that therefore the moulding of the first vehicle defines the outer surface of front hatch cover.Simultaneously
The size and shape that enging cabin is open after the moulding of vehicle determines also determines that, and the profile of front hatch cover is and engine
Cabin opening is matched, therefore the moulding of the first vehicle further defines the profile of front hatch cover.
It is required according to enging cabin space layout, needs to stay between the engine in the inner surface and enging cabin of front hatch cover
There is certain interval, the minimum value of different vehicles, the required gap stayed is also different, therefore, the requirement of enging cabin space layout
Define the inner surface of front hatch cover.It requires to be assured that out one according to the moulding of the first vehicle and enging cabin space layout
Design space, designed front hatch cover cannot exceed the design space.
Fig. 3 is a kind of partial schematic diagram of the moulding of first vehicle provided in an embodiment of the present invention.Dotted line frame table in Fig. 3
Show the section of design space A.Fig. 4 is a kind of bottom view of design space provided in an embodiment of the present invention.It is preceding in conjunction with Fig. 3 and Fig. 4
Hatchcover 11 is located in the A of design space.
S112: the finite element model of front hatch cover is established in design space.
Front hatch cover includes outside plate and inner panel, and inner panel includes multiple floors between frame and the side for being connected to frame.Outside plate
It is stacked on inner panel.When establishing finite element model, outside plate can be configured according to the moulding of the first vehicle, and inner panel can root
It is configured according to experience or existing design.
Frame is joined end to end by a plurality of side, surrounds specific shape.The schematic diagram of frame 11 is shown in Fig. 4,
Frame 11 surrounds a space 11a, and multiple floors 12 can be set in the 11a of space.
S113: structure optimization is carried out to frame.
Illustratively, it is based on finite element model, it can be with the mode of the front hatch cover, rigidity of front hatch cover, the rigidity of frame, preceding
The rigidity of the installation point 111 of hatchcover is constraint condition, carries out structure optimization to frame with the minimum target of the weight of front hatch cover.?
Initial inner plate structure has been obtained by experience or existing design in step S112, it is excellent by carrying out structure to frame here
Change, the border structure of inner panel can be made more reasonable, more matched with outside plate.Structure optimization may include that topological optimization and pattern are excellent
Change.
S114: based on the finite element model after structure optimization, topological optimization is carried out to multiple floors.
It illustratively, can be with the mode of front hatch cover, the rigidity of front hatch cover, the rigidity of frame, the installation point of front hatch cover
Rigidity, front hatch cover head touch area depression amount be constraint condition, with the minimum target of the weight of front hatch cover to multiple floors carry out
Topological optimization.The material distribution and the trend of floor of multiple floors can be determined by topological optimization.In step S113
Structure optimization only has been carried out to frame, has not accounted for influence of the floor to inner panel, by again with the mode of front hatch cover, front hatch cover
Rigidity, the rigidity of frame, the rigidity of the installation point of front hatch cover be constraint, the minimum target of the weight of front hatch cover is to multiple floors
Topological optimization is carried out, the accuracy of inner panel design can be improved.Meanwhile floor is arranged in the middle part of frame, the layout of floor can shadow
Ring recess of the outside plate in collision.As shown in figure 4, in automobile manufacturing field, head touches region and generally comprises relatively to be leaned on front hatch cover
The region A and closer front hatch cover up-front region B, region A of nearly windshield are mainly the collision area of adult head, region
B is mainly the collision area of children head.Head touches area depression amount and refers to and may collide with pedestrian head on front hatch cover
Cup depth of the region in collision.The head for increasing front hatch cover touches area depression amount as constraint condition, and front hatch cover can be improved
Pedestrian protecting performance.
S115: based on the finite element model after topological optimization, the first parameterized model is constructed.
After carrying out topological optimization to floor, the structure of frame, the structure of floor and distributing position have determined substantially,
Each dimensional parameters to frame, floor are also needed to be adjusted in the next steps.The first parameter is constructed according to finite element model
Change model, in this way it is subsequent front hatch cover is adjusted when can be adjusted on the basis of the first parameterized model.It is convenient
CAD model is constructed in subsequent step.
It is alternatively possible to using the first parameterized model of SFE-concept software building.
Fig. 5 is the flow chart of another front hatch cover for obtaining the first vehicle provided in an embodiment of the present invention.As shown in figure 5,
This method comprises:
S121: the parameterized model of the front hatch cover of the second vehicle is obtained.
Second vehicle is the vehicle with the first vehicle different automobile types, and the second vehicle designs before the first vehicle.Second
Vehicle can be starting vehicle, and starting vehicle refers to a series of first item vehicle developed in vehicles, be also possible to the first vehicle it
Other vehicles of preceding design.
The parameterized model of the front hatch cover of second vehicle is the corresponding parametrization of final mask of the front hatch cover of the second vehicle
Model, i.e., for constructing the parameterized model of the final mask of the front hatch cover of the second vehicle, the parameter of the front hatch cover of the second vehicle
Changing model can save in the database to facilitate acquisition.It is alternatively possible to save the ginseng obtained using SFE-concept software
Numberization model.
Optionally, save the second vehicle front hatch cover parameterized model before, can also be according to the second vehicle before
Minutia in the final mask of hatchcover modifies to the parameterized model of the front hatch cover of the second vehicle, by minutia
It is embodied in the second parameterized model, so in the next steps, it may not be necessary to CAD model is adjusted in CAD again
Minutia is embodied on model.
S122: the outside plate of the parameterized model of the front hatch cover of the second vehicle is adjusted, according to the moulding of the first vehicle to obtain
First parameterized model.
The outside plate of the parameterized model of the front hatch cover of second vehicle is designed according to the front hatch cover of the second vehicle, by second
Outside plate in the parameterized model of the front hatch cover of vehicle is adjusted according to the moulding of the first vehicle, in order to subsequent step into
Row.
When designing the front hatch cover of the second vehicle, the Optimizing Flow of Optimus software can be saved to database, in this way
When executing step S12~13, the design variable of the front hatch cover of the first vehicle can be directly determined according to the Optimizing Flow of preservation
Optimal value save the time for establishing Optimizing Flow without being once again set up Optimizing Flow, can be further improved efficiency.
S12: the value range of the design variable of the front hatch cover of the first vehicle and the design variable of front hatch cover is determined.
The design variable of front hatch cover may include the design variable of frame and the design variable of floor.Fig. 6 is of the invention real
A kind of partial structural diagram of inner panel of example offer is provided.Structure shown in fig. 6 either frame a part, be also possible to
A part of floor, H indicates height in Fig. 6, and W indicates that width, D indicate angle.The design variable of front hatch cover may include frame
Height, the width of frame, the height of floor, floor width.The value range of design variable can be according to design space people
Work setting, it is ensured that the inner panel designed is located in design space.Optionally, the design variable of front hatch cover can also include punching press
Angle, frame and floor can be stamping parts, in punching press, punching press angle is different for frame or floor, also will affect and produce
The performance indicator of front hatch cover.
S13: the value range of the design variable of performance indicator and front hatch cover based on front hatch cover, to the first parameterized model
The design variable of front hatch cover optimize, obtain the second parameterized model.
Optionally, the performance indicator of front hatch cover may include the mode of front hatch cover, the rigidity of front hatch cover, the rigidity of frame,
The rigidity of the installation point of front hatch cover, the head of front hatch cover touch at least one of area depression amount, dent resistance of front hatch cover.Work as front deck
When the design variable of lid takes optimal value, all properties index of front hatch cover can satisfy design requirement, and actual performance refers to
It marks minimum with differing for the performance indicator of design requirement.The part of performance indicator of the actual performance indicator beyond design requirement claims
It for surplus, can not only guarantee that performance indicator met design requirement in this way, but also can be excessive to avoid surplus, and cause to waste.It is usually remaining
Amount is bigger, and production cost also can be higher, for example, when the rigidity of required frame is 100N/m, if in two kinds of designs, frame
Rigidity is respectively 110N/m and 150N/m, then the frame for being 150N/m for rigidity, it is 110N/ that production cost, which can be higher than rigidity,
The frame of m.
Illustratively, Optimus software can be used, according to the value range of determining design variable and design variable
The Optimizing Flow for establishing multi-parameter passes sequentially through experimental design DOE (Design of Experiment, experimental design), response
Surface analysis calls the step of global optimization approach, determines the optimal value of each design variable.
Fig. 7 is a kind of optimized flow chart of multi-parameter provided in an embodiment of the present invention.As shown in fig. 7, determining design change
After amount, in conjunction with design variable and the first parameterized model, SFE-concept software is run, to generate three files, respectively
Then modal stiffness Study document, dent resistance Study document and pedestrian protecting performance evaluation file add respectively on three files
The measurement condition of load standard, and destination file is generated respectively, wherein two destination files can be generated in modal stiffness Study document,
The mode of one available front hatch cover of destination file, the rigidity of the available front hatch cover of another destination file, frame it is rigid
A destination file can be generated in the rigidity of the installation point of degree, front hatch cover, pedestrian protecting performance evaluation file, according to result text
The head of the available front hatch cover of part touches area depression amount, and a destination file can be generated in dent resistance Study document, according to the knot
The dent resistance of the available front hatch cover of fruit file.
After the optimal value for the design variable for determining front hatch cover, can be obtained on the basis of the first parameterized model
Two parameterized models, such as can be design variable by the parameter regulation corresponding with design variable in the first parameterized model
Optimal value, to obtain the second parameterized model.
S14: CAD model is constructed according to the second parameterized model.
Optionally, after constructing CAD model according to the second parameterized model, CAD engineer can also carry out CAD model
Adjustment, to embody the more minutias of front hatch cover by CAD model.Illustratively, minutia may include hole, welding
At least one of head, mesoporous may include connecting hole, location hole.More hole, welding are further typically provided on front hatch cover
Head can embody the minutia on front hatch cover in CAD model, and the model of design is made to be more nearly actual front hatch cover.
S15: CAE analysis is carried out to the CAD model that front hatch cover Optimization Modeling obtains, to detect the performance indicator of front hatch cover.
When the performance indicator qualification of front hatch cover, using CAD model as the final mask of the front hatch cover of the first vehicle.
Fig. 8 is a kind of schematic diagram of final mask provided in an embodiment of the present invention.As shown in figure 8, the CAD in step S14
Minutia is increased on model, minutia can also affect to the performance indicator of front hatch cover, obtain CAD mould
CAE analysis is carried out after type, it can be ensured that the performance indicator of obtained final mask meets design requirement.
The performance indicator of CAD model obtained in step S14 usually can satisfy design requirement, but also have less feelings
There is the case where partial properties index is unsatisfactory for design requirement in condition.Step shown in Fig. 9 can also be repeated at this time, until front hatch cover
Performance indicator it is qualified.
S16: determining the design variable of the front hatch cover of increased first vehicle and/or determines the design of front hatch cover adjusted
The value range of variable.
S17: the value range of the design variable of the front hatch cover of performance indicator and the first vehicle based on front hatch cover, to first
The design variable of the front hatch cover of parameterized model optimizes, and obtains third parameterized model.
S18: CAD model is constructed according to third parameterized model.
S19: CAE analysis is carried out to Computer Aided Design Model, to detect the performance indicator of front hatch cover.
Optionally, the design variable of front hatch cover can also include the design variable of outside plate, and the design variable of outside plate can wrap
Include the position of the radian of outside plate, fin on outside plate.The radian of outside plate, fin on outside plate position in step S112 just
Through determination, will not generally be changed during subsequent design, but in subsequent step, in the value model of determining design variable
It, then can be again true when the optimal value of performance indicator qualification for making front hatch cover is not present at least one design variable in enclosing
The position for determining the radian of increase outside plate when design variable, the fin on outside plate, makes the structure of outside plate change a lot.
Optionally, after the step s 15, before step S16, a CAE first can also be carried out to the first parameterized model
Analysis.There can be a preliminary understanding, to the performance indicator of the first parameterized model in this way convenient for preferably determining design variable
Value range.Such as by carrying out CAE analysis to the first parameterized model, learn that the rigidity of the frame of the first parameterized model is high
There are many design requirement out, then can by the upper and lower bound of the value range of the height of frame, the width of frame the upper limit and under
Limit reduces, so that the area of the cross section of frame reduces, reduces the rigidity of frame, saves material.
Illustratively, can first determine the value range of the design variable of front hatch cover adjusted, then execute S17~
S19.If being still unable to satisfy design requirement, return step S16 determines the value of the design variable of front hatch cover adjusted again
Then range executes S17~S19.If being still unable to satisfy design requirement by being repeated several times, it can increase by the first vehicle
The design variable of front hatch cover, such as increase including at least one of position of fin on the radian of outside plate, outside plate
Then design variable executes S17~S19.
By obtaining the first parameterized model of the front hatch cover of the first vehicle, the design variable and front hatch cover of front hatch cover are determined
Design variable value range, so as to the value model of the design variable of performance indicator and front hatch cover based on front hatch cover
It encloses, the design variable of the front hatch cover of the first parameterized model is optimized, CAD is established out according to the second parameterized model later
Model.CAE analysis can be carried out after establishing CAD model, detect the performance indicator of front hatch cover, if performance indicator is qualified,
The CAD model can be used as the final mask of front hatch cover.It is established due to CAD model not according to experience, but according to optimization
What the second parameterized model afterwards obtained, and the second parameterized model is obtained according to the first parameterized model, the first parametrization mould
Type is that the finite element model of the front hatch cover based on the first vehicle constructs, alternatively, the first parameterized model of the first vehicle be
Modification obtains on the basis of the parameterized model of the front hatch cover of second vehicle, therefore the performance for the CAD model established for the first time
Index is just likely to qualified, without correcting CAD model repeatedly.Compared to CAD model is corrected repeatedly, substantially reduce
The workload of CAD engineer improves the efficiency of front hatch cover design.
Figure 10 is a kind of structural block diagram of the design device of front hatch cover provided in an embodiment of the present invention, which is used for Fig. 1
Shown in front hatch cover design method.As shown in Figure 10, which includes obtaining module 21, determining module 22, optimization mould
Block 23, building module 24, processing module 25.
Wherein, the first parameterized model that module 21 is used to obtain the front hatch cover of the first vehicle is obtained, the of the first vehicle
One parameterized model is that the finite element model of the front hatch cover based on the first vehicle constructs, alternatively, the first parameter of the first vehicle
Changing model is to modify to obtain on the basis of the parameterized model of the front hatch cover of the second vehicle.Obtaining module 21 can be before
The step S11 stated obtains the first parameterized model of the front hatch cover of the first vehicle.
Determining module 22 is used to determine the value of the design variable of the front hatch cover of the first vehicle and the design variable of front hatch cover
Range.Determining module 22 can determine the design variable and front hatch cover of the front hatch cover of the first vehicle according to aforementioned step S12
The value range of design variable.
Value range of the optimization module 23 for the design variable of performance indicator and front hatch cover based on front hatch cover, to first
The design variable of the front hatch cover of parameterized model optimizes, and obtains the second parameterized model.Optimization module 23 can be before
The step S13 stated obtains the second parameterized model.
Module 24 is constructed to be used to construct CAD model according to the second parameterized model.Constructing module 24 can be according to above-mentioned
Step S14 constructs CAD model.
Processing module 25 is used to carry out computer-aided engineering analysis to Computer Aided Design Model, to detect front hatch cover
Performance indicator, when the performance indicator qualification of front hatch cover, using Computer Aided Design Model as the front hatch cover of the first vehicle
Final mask.Processing module 25 can carry out CAE analysis according to aforementioned step S15.
Optionally, the performance indicator of front hatch cover may include the mode of front hatch cover, the rigidity of front hatch cover, the rigidity of frame,
The rigidity of the installation point of front hatch cover, the head of front hatch cover touch at least one of area depression amount, dent resistance of front hatch cover.Work as front deck
When the design variable of lid takes optimal value, all properties index of front hatch cover can satisfy design requirement, and actual performance refers to
It marks minimum with differing for the performance indicator of design requirement.The part of performance indicator of the actual performance indicator beyond design requirement claims
It for surplus, can not only guarantee that performance indicator met design requirement in this way, but also can be excessive to avoid surplus, and cause to waste.It is usually remaining
Amount is bigger, and production cost also can be higher, for example, when the rigidity of required frame is 100N/m, if in two kinds of designs, frame
Rigidity is respectively 110N/m and 150N/m, then the frame for being 150N/m for rigidity, it is 110N/ that production cost, which can be higher than rigidity,
The frame of m.
By obtaining the first parameterized model of the front hatch cover of the first vehicle, the design variable and front hatch cover of front hatch cover are determined
Design variable value range, so as to the value model of the design variable of performance indicator and front hatch cover based on front hatch cover
It encloses, the design variable of the front hatch cover of the first parameterized model is optimized, CAD is established out according to the second parameterized model later
Model.CAE analysis can be carried out after establishing CAD model, detect the performance indicator of front hatch cover, if performance indicator is qualified,
The CAD model can be used as the final mask of front hatch cover.It is established due to CAD model not according to experience, but according to optimization
What the second parameterized model afterwards obtained, and the second parameterized model is obtained according to the first parameterized model, the first parametrization mould
Type is that the finite element model of the front hatch cover based on the first vehicle constructs, alternatively, the first parameterized model of the first vehicle be
Modification obtains on the basis of the parameterized model of the front hatch cover of second vehicle, therefore the performance for the CAD model established for the first time
Index is just likely to qualified, without correcting CAD model repeatedly.Compared to CAD model is corrected repeatedly, substantially reduce
The workload of CAD engineer improves the efficiency of front hatch cover design.
In one embodiment, Figure 11 is a kind of structural block diagram for obtaining module provided in an embodiment of the present invention, is such as schemed
Shown in 11, obtaining module 21 may include space determination unit 211, finite element model unit 212, optimization unit 213, building list
Member 214.Wherein, space determination unit 211 is used to require to determine according to the moulding of the first vehicle and enging cabin space layout the
The design space of the front hatch cover of one vehicle.Before space determination unit 211 can determine the first vehicle according to abovementioned steps S111
The design space of hatchcover.
Finite element model unit 212 is used to establish the finite element model of front hatch cover in design space, and front hatch cover includes outer
Plate and inner panel, inner panel include multiple floors between frame and the side for being connected to frame.Finite element model unit 212 can basis
Abovementioned steps S112 establishes finite element model.
Optimize unit 213 to be used to carry out structure optimization to frame, based on the finite element model after structure optimization, to multiple ribs
Plate carries out topological optimization.Optimization unit 213 can be optimized according to abovementioned steps S113~S114.
Construction unit 214 is used to construct the first parameterized model based on the finite element model after topological optimization.Construction unit
214 can construct the first parameterized model according to abovementioned steps S115.
In another embodiment, Figure 12 is another structural block diagram for obtaining module provided in an embodiment of the present invention,
As shown in figure 12, obtaining module 21 may include acquiring unit 215 and adjustment unit 216.Acquiring unit 215 is for obtaining second
The parameterized model of the front hatch cover of vehicle.The parameter of the front hatch cover of the second vehicle can be specifically obtained according to aforementioned step S121
Change model.
Adjustment unit 216 is used to adjust the outer of the parameterized model of the front hatch cover of the second vehicle according to the moulding of the first vehicle
Plate, to obtain the first parameterized model.Specifically the first parameterized model can be obtained according to aforementioned step S122.
Optionally, which can also include control module 26.Control module 26 is for controlling determining module 22, excellent
Change module 23, building module 24 and processing module 25, until the performance indicator of front hatch cover is qualified.
Determining module 22 is also used to determine that the design variable of the front hatch cover of increased first vehicle and/or determination are adjusted
The value range of the design variable of front hatch cover.It can specifically be carried out according to aforementioned step S16.
Optimization module 23 is also used to taking for the design variable of the front hatch cover of performance indicator and the first vehicle based on front hatch cover
It is worth range, the design variable of the front hatch cover of the first parameterized model is optimized, third parameterized model is obtained.It specifically can be with
Third parameterized model is obtained according to aforementioned step S17.
Building module 24 is also used to construct Computer Aided Design Model according to third parameterized model.It specifically can basis
Aforementioned step S18 is carried out.
Processing module 25 is also used to carry out CAE analysis to CAD model, to detect the performance indicator of front hatch cover.It specifically can be with
It is carried out according to aforementioned step S19.
Figure 13 is a kind of structural schematic diagram of the design device of front hatch cover provided in an embodiment of the present invention.The device can be
The equipment such as computer.Specifically:
Computer 1700 includes central processing unit (CPU) 1701 including random access memory (RAM) 1702 and read-only
The system storage 1704 of memory (ROM) 1703, and connection system storage 1704 and central processing unit 1701 be
System bus 1705.Computer 1700 further includes the basic input/output that information is transmitted between each device helped in computer
System (I/O system) 1706.
Basic input/output 1706 includes display 1708 for showing information and inputs information for user
Such as mouse, keyboard etc input equipment 1709.Wherein display 1708 and input equipment 1709 are all by being connected to
The input and output controller 1710 of system bus 1705 is connected to central processing unit 1701.Basic input/output 1706 is also
May include input and output controller 1710 with for receive and handle from keyboard, mouse or electronic touch pen etc. it is multiple its
The input of his equipment.Similarly, input and output controller 1710 also provides output to display screen, printer or other kinds of defeated
Equipment out.
Without loss of generality, computer-readable medium may include computer storage media and communication media.Computer storage
Medium includes any of the information such as computer readable instructions, data structure, program module or other data for storage
The volatile and non-volatile of method or technique realization, removable and irremovable medium.Computer storage medium include RAM,
ROM, EPROM, EEPROM, flash memory or other solid-state storages its technologies, CD-ROM, DVD or other optical storages, cassette, magnetic
Band, disk storage or other magnetic storage devices.Certainly, skilled person will appreciate that computer storage medium is not limited to
It states several.
According to various embodiments of the present invention, computer 1700 can also pass through the network connections such as internet to network
On remote computer operation.Namely computer 1700 can be by the Network Interface Unit that is connected on system bus 1705
1711 are connected to network 1712, in other words, Network Interface Unit 1711 also can be used be connected to other kinds of network or
Remote computer system (not shown).
Above-mentioned memory further includes one, and perhaps more than one program one or more than one program are stored in storage
In device, it is configured to be executed by CPU.When CPU executes the program in memory, method shown in FIG. 1 may be implemented.
In the exemplary embodiment, a kind of computer readable storage medium including instruction is additionally provided, for example including finger
The memory of order, above-metioned instruction can be loaded and be executed shown in FIG. 1 to complete by the central processing unit 1701 of computer 1700
Method.For example, computer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and
Optical data storage devices etc..
It should be understood that the design device of front hatch cover provided by the above embodiment is when designing front hatch cover, only with above-mentioned
The division progress of each functional module can according to need and for example, in practical application by above-mentioned function distribution by different
Functional module is completed, i.e., the internal structure of equipment is divided into different functional modules, with complete it is described above whole or
Partial function.In addition, the design device of front hatch cover provided by the above embodiment and the design method embodiment of front hatch cover belong to together
One design, specific implementation process are detailed in embodiment of the method, and which is not described herein again.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of design method of front hatch cover characterized by comprising
The first parameterized model of the front hatch cover of the first vehicle is obtained, the first parameterized model of first vehicle is based on institute
The finite element model building of the front hatch cover of the first vehicle is stated, alternatively, the first parameterized model of first vehicle is the
Modification obtains on the basis of the parameterized model of the front hatch cover of two vehicles；
Determine the value range of the design variable of the front hatch cover of first vehicle and the design variable of the front hatch cover；
The value range of the design variable of performance indicator and the front hatch cover based on the front hatch cover, to first parametrization
The design variable of the front hatch cover of model optimizes, and obtains the second parameterized model；
Computer Aided Design Model is constructed according to second parameterized model；
Computer-aided engineering analysis is carried out to the Computer Aided Design Model, is referred to detecting the performance of the front hatch cover
Mark,
When the performance indicator qualification of the front hatch cover, using the Computer Aided Design Model as first vehicle before
The final mask of hatchcover.
2. design method according to claim 1, which is characterized in that the first ginseng of the front hatch cover for obtaining the first vehicle
Numberization model, comprising:
Setting for the front hatch cover for determining first vehicle is required according to the moulding of first vehicle and enging cabin space layout
Count space；
Establish the finite element model of the front hatch cover in the design space, the front hatch cover includes outside plate and inner panel, described
Inner panel includes multiple floors between frame and the side for being connected to the frame；
Structure optimization is carried out to the frame；
Based on the finite element model after the structure optimization, topological optimization is carried out to the multiple floor；
Based on the finite element model after the topological optimization, the first parameterized model is constructed, alternatively,
Obtain the parameterized model of the front hatch cover of second vehicle；
The outside plate of the parameterized model of the front hatch cover of second vehicle is adjusted, according to the moulding of first vehicle to obtain
State the first parameterized model.
3. design method according to claim 2, which is characterized in that described to carry out structure optimization to the frame, comprising:
Based on the finite element model, with the mode of the front hatch cover, the rigidity of the front hatch cover, the rigidity of the frame, institute
The rigidity for stating the installation point of front hatch cover is constraint condition, is tied with the minimum target of the weight of the front hatch cover to the frame
Structure optimization.
4. design method according to claim 2, which is characterized in that it is described that topological optimization is carried out to the multiple floor,
Include:
With the mode of the front hatch cover, the rigidity of the front hatch cover, the rigidity of the frame, the installation point of the front hatch cover it is rigid
It spends, the head of the front hatch cover touches area depression amount for constraint condition, with the minimum target of the weight of the front hatch cover to described more
A floor carries out topological optimization.
5. design method according to claim 2, which is characterized in that the performance indicator of the front hatch cover includes the front deck
The mode of lid, the rigidity of the front hatch cover, the rigidity of the frame, the rigidity of the installation point of the front hatch cover, the front hatch cover
Head touch at least one of area depression amount, dent resistance of the front hatch cover.
6. described in any item design methods according to claim 1~5, which is characterized in that further include:
When the performance indicator of the front hatch cover is unqualified, repeat the steps of, until the performance indicator of the front hatch cover is qualified:
It determines the design variable of the front hatch cover of increased first vehicle and/or determines the design of the front hatch cover adjusted
The value range of variable；
The value range of the design variable of the front hatch cover of performance indicator and first vehicle based on the front hatch cover, to described
The design variable of the front hatch cover of first parameterized model optimizes, and obtains third parameterized model；
Computer Aided Design Model is constructed according to the third parameterized model；
Computer-aided engineering analysis is carried out to the Computer Aided Design Model, is referred to detecting the performance of the front hatch cover
Mark.
7. a kind of design device of front hatch cover characterized by comprising
Obtain module, the first parameterized model of the front hatch cover for obtaining the first vehicle, the first parameter of first vehicle
Change the finite element model that model is the front hatch cover based on first vehicle to construct, alternatively, the first of first vehicle joins
Numberization model is to modify to obtain on the basis of the parameterized model of the front hatch cover of the second vehicle；
Determining module, for determining taking for the design variable of the front hatch cover of first vehicle and the design variable of the front hatch cover
It is worth range；
Optimization module, the value range of the design variable for performance indicator and the front hatch cover based on the front hatch cover are right
The design variable of the front hatch cover of first parameterized model optimizes, and obtains the second parameterized model；
Module is constructed, for constructing Computer Aided Design Model according to second parameterized model；
Processing module, for the Computer Aided Design Model carry out computer-aided engineering analysis, with detect it is described before
The performance indicator of hatchcover, when the performance indicator qualification of the front hatch cover, using the Computer Aided Design Model described in
The final mask of the front hatch cover of first vehicle.
8. design device according to claim 7, which is characterized in that the acquisition module includes:
Space determination unit, for requiring to determine described first according to the moulding of first vehicle and enging cabin space layout
The design space of the front hatch cover of vehicle；
Finite element model unit, for establishing the finite element model of the front hatch cover, the front hatch cover in the design space
Including outside plate and inner panel, the inner panel includes multiple floors between frame and the side for being connected to the frame；
Optimize unit, it is right based on the finite element model after the structure optimization for carrying out structure optimization to the frame
The multiple floor carries out topological optimization；
Construction unit, for constructing the first parameterized model based on the finite element model after the topological optimization, alternatively,
The acquisition module includes:
Acquiring unit, the parameterized model of the front hatch cover for obtaining second vehicle；
Adjustment unit, the parameterized model of the front hatch cover for adjusting second vehicle according to the moulding of first vehicle
Outside plate, to obtain first parameterized model.
9. design device according to claim 7, which is characterized in that further include control module, for controlling the determination
Module, the optimization module, the building module and the processing module, until the performance indicator of the front hatch cover is qualified:
After the determining module is also used to determine the design variable of the front hatch cover of increased first vehicle and/or determines adjustment
The front hatch cover design variable value range；
The design that the optimization module is also used to the front hatch cover of performance indicator and first vehicle based on the front hatch cover becomes
The value range of amount optimizes the design variable of the front hatch cover of first parameterized model, obtains third parameter
Change model；
The building module is also used to construct Computer Aided Design Model according to the third parameterized model；
The processing module is also used to carry out computer-aided engineering analysis to the Computer Aided Design Model, to detect
State the performance indicator of front hatch cover.
10. a kind of computer readable storage medium, which is characterized in that be stored at least one instruction, institute in the storage medium
Instruction is stated to be loaded by processor and executed to realize the design method such as front hatch cover as claimed in any one of claims 1 to 6.
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Cited By (1)
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| CN102012958A (en) * | 2010-12-29 | 2011-04-13 | 奇瑞汽车股份有限公司 | Method for designing automobile body structure layout |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111695236A (en) * | 2020-04-29 | 2020-09-22 | 上汽大众汽车有限公司 | Engine compartment cover jitter simulation analysis method based on air pressure load |
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