CN112949082B - Method and structure for optimizing structure of auxiliary instrument board - Google Patents
Method and structure for optimizing structure of auxiliary instrument board Download PDFInfo
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- CN112949082B CN112949082B CN202110309911.2A CN202110309911A CN112949082B CN 112949082 B CN112949082 B CN 112949082B CN 202110309911 A CN202110309911 A CN 202110309911A CN 112949082 B CN112949082 B CN 112949082B
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- G06F30/20—Design optimisation, verification or simulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/02—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R7/00—Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps
- B60R7/04—Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps in driver or passenger space, e.g. using racks
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- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
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- B62D25/14—Dashboards as superstructure sub-units
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Abstract
The invention discloses a method for optimizing a structure of an auxiliary instrument board and a structure, wherein the method comprises the following steps: performing a head-on virtual simulation test to obtain head-on simulation test data; acquiring a head-impact acceleration curve according to the head-impact simulation test data, and establishing a dual-platform acceleration target curve according to the head-impact acceleration curve; analyzing a double-platform acceleration target curve according to the head-on-head requirement of the auxiliary instrument panel, and simultaneously considering the first-order modal requirement of the auxiliary instrument panel to obtain a structure optimization strategy of the auxiliary instrument panel structure; and decomposing and optimizing the auxiliary instrument board structure according to the structure optimization strategy of the auxiliary instrument board structure. According to the auxiliary instrument panel structure optimization method, the double-platform acceleration target curve is analyzed according to the auxiliary instrument panel head collision requirement and the first-order modal requirement, the structure optimization strategy of the auxiliary instrument panel structure is obtained, the head collision and modal performance of the auxiliary instrument panel are balanced, technical support is provided for subsequent auxiliary instrument panel structure generalization, and meanwhile the back row dynamic exemption test cost is saved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a structure for optimizing a structure of an auxiliary instrument panel.
Background
At present, the Z-direction strength and the Y-direction rigidity analysis of an automobile auxiliary instrument board structure influence the head collision and modal performance, the head collision requires the Z-direction strength of the auxiliary instrument board structure to be properly controlled, the first-order mode requires the Y-direction rigidity of the auxiliary instrument board structure to be strong, the structural design needs to simultaneously ensure that the Z-direction structural strength is reasonable and the Y-direction structural rigidity is strong, so that the Z-direction structural strength is difficult, and the general value of the first-order mode is Y-direction integral mode.
The prior art provides a lower cross beam of a front windshield of an automobile, which is used for protecting the head of a pedestrian and comprises a windshield mounting plate, a windshield supporting plate, a ventilating plate reinforcing plate and at least one bracket; the wind window glass backup pad both ends are connected with glass mounting panel and ventilating board reinforcing plate respectively, and the reinforcing plate that ventilates is connected with the ventilating board, and support one end is connected with the ventilating board, and the other end is connected with ventilating reinforcing plate or wind window glass backup pad, wherein wind window glass backup pad is deformation energy-absorbing spare for the impact energy who comes from the windshield transmission. Specifically, based on the fact that the requirements of the head protection performance of pedestrians and the requirements of a vehicle body mode and passenger safety on the rigidity of a lower cross beam region of a front windshield are mutually contradictory, the lower cross beam of the front windshield is provided to protect pedestrians while the mode and the passenger safety of a whole vehicle are considered. Through setting up deformation energy-absorbing element at the windscreen backup pad, when pedestrian's head and this regional collision contact messenger, preceding windscreen backup pad can take place deformation, absorbs the impact energy who comes from the windshield transmission, has produced extra buffering space simultaneously in windscreen below to reduce the impact to pedestrian's head. The wall thickness and/or the material of the reinforcing plate and/or the bracket of the ventilating board are/is adjusted to adjust the intrusion amount of the passenger compartment, and the deformation of the windshield supporting plate is not influenced. The rigidity and the mode of the vehicle body can be adjusted by adjusting the material and the wall thickness of the ventilation plate. Through the functional design of the windshield glass supporting plate, the ventilating plate and the ventilating plate reinforcing plate, the pedestrian can be protected while the mode of the whole vehicle and the safety of passengers are considered. However, in the technical scheme, only the mode is considered, and only the deformation energy-absorbing element is arranged to absorb the impact energy transmitted from the outside so as to reduce the impact on the head of the pedestrian, so that the impact on the head of the pedestrian is not considered at the same time.
In the prior art, the head collision problem of the auxiliary instrument panel is also analyzed through CAE simulation, an auxiliary instrument panel structure optimization scheme is provided, and test verification is carried out. Firstly, selecting some collision points and recording a curve of acceleration changing along with time in a collision process; then, analyzing to obtain that the structural design of the bottom of the storage box and the rear mounting metal bracket is stronger, no crumple space exists between the bottom of the storage box and the rear mounting metal bracket, the storage box and the rear mounting metal bracket cannot absorb energy during collision, the connection structure between the storage box and the bracket is considered to be weakened, and materials with good energy absorption performance can be selected; and finally, verifying that the optimized structure meets the requirements through a head-on-head test. In the prior art, although the contradiction between the rigidity and the mode of the auxiliary instrument panel and the energy absorption requirement of the auxiliary instrument panel is found, a technical scheme for balancing the mode of the auxiliary instrument panel and the head impact is not provided.
In summary, the prior art has found that the performance requirements of the head impact and the mode of the console are contradictory, but does not provide a solution that can satisfy both the performance requirements of the head impact and the mode.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide a method and a structure for optimizing a structure of a secondary instrument panel.
In a first aspect, the present invention provides a method for optimizing a structure of a console, comprising the steps of:
performing a head-on virtual simulation test to obtain head-on simulation test data;
acquiring a head-collision acceleration curve of a collision point according to the obtained head-collision simulation test data, and establishing a double-platform acceleration target curve according to the head-collision acceleration curve;
analyzing the double-platform acceleration target curve according to the head collision requirement of the auxiliary instrument board to obtain a structure optimization strategy of the auxiliary instrument board structure;
and decomposing and optimizing the auxiliary instrument board structure according to the obtained structure optimization strategy of the auxiliary instrument board structure.
According to the first aspect, in a first possible implementation manner of the first aspect, the step of "decomposing and optimizing the sub instrument panel structure according to the obtained structure optimization strategy of the sub instrument panel structure" specifically includes the following steps:
according to the obtained structure optimization strategy of the auxiliary instrument board structure, the auxiliary instrument board structure is optimized and decomposed into the optimization of a handrail structure and a metal support structure;
the handrail structure and the metal support structure are optimized respectively.
According to a first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the step of "optimizing the armrest structure and the metal support structure respectively" specifically includes the following steps:
the structural strength of the handrail structure is improved and optimized;
and the Z-direction collapse performance of the metal support structure is improved and optimized.
According to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the step of "optimizing the structural strength of the handrail structure includes the following steps:
and (4) lifting and optimizing the height and material thickness of the reinforcing ribs of the upper handrail plate of the handrail structure obtained by decomposition.
According to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the step of "improving and optimizing the Z-direction collapse performance of the metal stent structure" specifically includes the following steps:
the Z-direction collapsing performance of the rear connecting support of the metal support structure is improved and optimized;
and the Z-direction collapse performance of the middle and lower connecting supports of the metal support structure is improved and optimized.
According to a fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the step of "improving and optimizing the Z-direction collapse performance of the metal stent structure" further includes the following steps:
the Y-direction connection strength of the middle and upper connecting support and the auxiliary instrument board structure of the metal support structure is improved and optimized;
and the connection strength of the middle upper connecting bracket and the middle lower connecting bracket of the metal bracket structure is improved and optimized.
According to the first aspect, in a sixth possible implementation manner of the first aspect, after the step of "decomposing and optimizing the sub instrument panel structure according to the obtained structure optimization strategy of the sub instrument panel structure", the method further includes the following steps:
and (4) performing head-on test verification and modal test verification on the auxiliary instrument panel structure with the optimized structure.
In a second aspect, the present invention provides a console structure to which the above-described console structure optimization method is applied, including:
a support frame structure comprising a support frame;
the storage box structure comprises a storage box arranged in the support framework;
the handrail structure comprises a handrail arranged at the top of the support framework and close to the front end;
the auxiliary instrument panel body comprises an auxiliary instrument panel which is arranged at the top of the support framework and arranged in front of and behind the handrail;
the coating mechanism comprises a plurality of decorative plates for coating the supporting framework;
the metal support structure comprises an upper middle connecting support, a lower middle connecting support and a rear connecting support, wherein the upper middle connecting support is fixedly connected with the support framework on the lower middle connecting support, the lower middle connecting support is used for fixing the upper middle connecting support and the storage box on a floor of a vehicle body, and the rear connecting support is used for fixing the support framework on the floor of the vehicle body.
According to a second aspect, in a first possible implementation form of the second aspect,
the rear connecting bracket comprises a rear bracket main body, a Y-direction crushing rib and an X-direction cantilever structure which are arranged on the rear bracket main body, a pair of first mounting parts which extend outwards from the rear bracket main body and are arranged oppositely, and a pair of second mounting parts which extend from the bottom of the rear bracket main body and are arranged in the same direction, wherein the pair of first mounting parts are fixed on the supporting framework, and the pair of second mounting parts are used for being fixed on a floor of a vehicle body;
the middle and lower connecting supports respectively comprise middle and lower support main bodies, first Y-direction crumple structures extending from the middle and lower support main bodies to the front lower side and second Y-direction crumple structures extending from the middle and lower support main bodies to the rear lower side, first connecting structures are arranged on front end platforms of the middle and lower support, second connecting structures are arranged on rear end platforms, two pairs of third connecting structures which are arranged in the same direction extend from the front and rear parts of the bottom of the middle and lower support, the pair of first connecting structures are connected with the middle and upper support, the pair of second connecting structures are connected with the storage box, and the two pairs of third connecting structures are connected with a vehicle body floor.
According to a first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the middle-upper connecting bracket includes a middle-upper bracket main body, a pair of first mounting structures that extend upward from the middle-upper bracket main body and are disposed oppositely, a second mounting structure that extends outward from the middle-upper bracket main body and is disposed oppositely, and a third mounting structure that is disposed at the bottom of the middle-upper bracket main body, the pair of first mounting structures is connected with a supporting framework, and the pair of second mounting structures is connected with the supporting framework. The third mounting structure is connected with the middle and lower brackets.
Compared with the prior art, the invention has the following advantages:
according to the auxiliary instrument panel structure optimization method, the double-platform acceleration target curve is analyzed according to the auxiliary instrument panel head collision requirement, the structure optimization strategy of the auxiliary instrument panel structure is obtained, the head collision and modal performance of the auxiliary instrument panel are balanced, technical support is provided for subsequent auxiliary instrument panel structure generalization, and meanwhile the cost of a back row dynamic exemption test is saved.
Drawings
FIG. 1 is a schematic flow chart of a method for optimizing a secondary instrument structure according to an embodiment of the present invention;
FIG. 2 is a dual stage acceleration target curve;
FIG. 3 is a schematic flow chart of another method of a secondary instrument structure optimization method of an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sub-dashboard structure according to an embodiment of the present invention;
FIG. 5 is another structural schematic view of a sub-instrument panel structure according to an embodiment of the present invention;
FIG. 6 is another structural schematic diagram of a sub-dashboard structure according to an embodiment of the present invention.
FIG. 7 is a schematic structural view of a rear attachment bracket according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a lower middle linking bracket according to an embodiment of the present invention;
fig. 9 is a schematic structural view of an upper mid-connection bracket according to an embodiment of the present invention.
In the figure:
100. a handrail; 200. a plaque; 300. a storage box; 410. the middle-upper connecting bracket; 411. a first mounting structure; 412. a second mounting structure; 420. a middle lower connecting bracket; 421. a first Y-direction collapsing structure; 422. a middle and lower bracket main body; 423. a second Y-direction collapsing structure; 424. a third connecting structure; 430. the rear connecting bracket; 431. a first mounting portion; 432. a Y-direction crushing rib and an X-direction cantilever structure; 433. a second mounting portion; 1. an acceleration curve; 2. a dual-platform acceleration target curve; 3. a first stage platform; 4. a second stage platform.
Detailed Description
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the specific embodiments, it will be understood that they are not intended to limit the invention to the embodiments described. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein may be implemented by any functional block or functional arrangement, and that any functional block or functional arrangement may be implemented as a physical entity or a logical entity, or a combination of both.
In order that those skilled in the art will better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.
Note that: the example to be described next is only a specific example, and does not limit the embodiments of the present invention necessarily to the following specific steps, values, conditions, data, orders, and the like. Those skilled in the art can, upon reading this specification, utilize the concepts of the present invention to construct more embodiments than those specifically described herein.
Referring to fig. 1, an embodiment of the present invention provides a method for optimizing a structure of a console, including the following steps:
s100, performing a head-on virtual simulation test to obtain head-on simulation test data;
the main relevant performance of head collision is influenced by the Z-direction strength of the auxiliary instrument board structure, and the Z-direction strength is properly controlled, so that the peak value of the average acceleration within 3ms can be controlled within 72 g.
S200, acquiring a head-on acceleration curve of a collision point according to the obtained head-on simulation test data, and fitting the head-on acceleration curve to establish a double-platform acceleration target curve;
s300, specifically, referring to FIG. 2, fitting a head touch acceleration curve 1 according to a head touch and acceleration trend and double-platform wave peaks, establishing a double-platform acceleration target curve 2 through energy calculation, analyzing the double-platform acceleration target curve according to a head touch requirement of the auxiliary instrument panel, and obtaining a structure optimization strategy of the auxiliary instrument panel structure;
specifically, according to the requirement of head touch of the auxiliary instrument panel, namely the requirement of proper Z-direction strength control of the auxiliary instrument panel structure and the requirement of strong Y-direction rigidity of the auxiliary instrument panel structure, the initial kinetic energy of the head touch device and the basic structure arrangement of the auxiliary instrument panel structure are combined, the acceleration of the first stage platform 3 basically needs to reach 60g through analysis and calculation, and the acceleration of the second stage platform 4 can be smaller than 72 g. Therefore, the analysis results in the structure optimization strategy of the auxiliary instrument panel, which is to improve the acceleration of the first section of platform 3, namely, the acceleration peak value of the first section of platform is improved through the early-stage structure enhancement, so that the kinetic energy of the head bumper is absorbed in the early stage of collision, the kinetic energy of the subsequent head bumper is reduced, and meanwhile, the strength of the second-stage participating structure is reduced, thereby reducing the acceleration peak value of the second-stage platform.
S400, according to the obtained structure optimization strategy of the auxiliary instrument board structure, decomposing and optimizing parts of the auxiliary instrument board structure in two platform stages of the participated double-platform acceleration target curve.
In one embodiment, the parts participating in the two platform phases of the dual-platform acceleration target curve are resolved by the magnitude of the stress and the deformation time of each part of the secondary instrument panel structure during head impact.
According to the auxiliary instrument panel structure optimization method, the double-platform acceleration target curve is analyzed according to the auxiliary instrument panel head collision requirement, the structure optimization strategy of the auxiliary instrument panel structure is obtained, the head collision and modal performance of the auxiliary instrument panel are balanced, technical support is provided for subsequent auxiliary instrument panel structure generalization, and meanwhile the cost of a back row dynamic exemption test is saved.
In some embodiments, referring to fig. 3, the step of "decomposing and optimizing the sub-instrument panel structure according to the obtained structure optimization strategy of the sub-instrument panel structure" specifically includes the following steps:
s410, according to the obtained structure optimization strategy of the auxiliary instrument board structure, firstly, decomposing deformation parts participating in a first section of platform 3, wherein the deformation parts mainly comprise an upper handrail board, a lower handrail board and a hinge, the stress borne by the storage box 300 and the metal support structure is in a linear section, the stress deformation is not generated temporarily, and the hinge is a through accessory and mainly used for carrying out structure reinforcement on the upper handrail board and the lower handrail board; then, decomposing parts participating in deformation in a second stage of platform 4 in the double-platform acceleration target curve, wherein the main deformation parts are in a metal support structure, so that the structure of the auxiliary instrument panel is mainly optimized and decomposed into the structure of the handrail and the structure of the metal support;
and S420, respectively optimizing the handrail structure and the metal support structure.
In one embodiment, the step of "optimizing the handrail structure and the metal support structure respectively" includes the following steps:
s421, according to the head-collision acceleration curve, performing structural reinforcement on the parts participating in the first stage of the platform in the dual-platform acceleration target curve, namely, improving and optimizing the structural strength of the handrail structure;
and S422, performing structural weakening on the parts participating in the second stage of the platform in the double-platform acceleration target curve, namely improving and optimizing the Z-direction collapse performance of the metal support structure or weakening the Z-direction strength of the metal support structure.
In some embodiments, the step of "optimizing the structural strength of the handrail structure" includes the following steps:
and S4211, lifting and optimizing the height and the material thickness of the reinforcing ribs of the upper handrail plate of the handrail structure obtained by decomposition, and thinning the material thickness of the main structure of the upper handrail plate and the lower handrail plate by considering the mode.
In some embodiments, the step of "improving and optimizing the Z-direction collapse performance of the metal stent structure" specifically includes the following steps:
s4221, performing structural weakening on parts involved in a second stage of the platform stage in the dual-platform acceleration target curve, in an embodiment, because a main function of the rear connecting bracket 430 is to provide a Y-direction rigid support for a first-order Y-direction mode of the sub instrument panel structure, and considering head-touch weakening Z-direction strength, the improvement and optimization of the Z-direction collapse performance of the rear connecting bracket 430 of the metal bracket structure are mainly realized;
s4222, performing structural weakening on parts involved in a second stage of the platform in the dual-platform acceleration target curve, in an embodiment, because the middle and lower connecting bracket 420 mainly functions to provide a basic support for the auxiliary instrument panel structure, the Z-direction collapsing performance of the auxiliary instrument panel structure is ensured during head collision, and specifically, the Z-direction collapsing performance of the middle and lower connecting bracket 420 of the metal bracket structure is improved and optimized.
In one embodiment, the Y-stiffness of the middle lower connecting bracket 420 of the metal bracket structure is optimized to ensure the Z-collapsing performance during head collision and to ensure the Y-stiffness of the middle lower connecting bracket 420.
In an embodiment, the step of "improving and optimizing the Z-direction collapsing performance of the metal stent structure" further includes the following steps:
structural weakening is made in the parts involved in the second stage of the dual platform acceleration target curve, in one embodiment, since the middle upper connecting bracket 410 mainly functions as a rigid supporting part for the modal and secondary instrument panels, but since the parts are far away from the head impact point, the parts have no influence on the head impact, and therefore, the Y-direction connecting strength of the middle upper connecting bracket 410 and the secondary instrument panel structure of the metal bracket structure is improved and optimized;
the connection strength of the upper middle connection bracket 410 and the lower middle connection bracket 420 of the metal bracket structure is improved and optimized to improve the overall structural rigidity and mode of the secondary instrument panel structure.
In some embodiments, after the step of "decomposing and optimizing the sub-instrument panel structure according to the obtained structure optimization strategy of the sub-instrument panel structure", the method further includes the following steps:
and performing head-on-head test verification and modal test verification on the auxiliary instrument panel structure with the optimized structure, wherein the head-on-head test verification and the modal test verification are used for verifying the reliability of the optimization method provided by the invention.
Based on the same inventive concept, referring to fig. 4-6, the present invention provides a sub dashboard structure applying the above sub dashboard structure optimization method, comprising:
a support frame structure comprising a support frame;
the storage box structure comprises a storage box 300 arranged in the support framework;
the handrail structure comprises a handrail 100 arranged at the top of the support framework near the front end;
a sub instrument panel body including a sub instrument panel provided at the top of the support frame and disposed in front of and behind the armrest 100;
a coating mechanism including a plurality of decorative plates 200 coating the support frame;
the metal support structure comprises an upper middle connecting support 410, a middle lower connecting support 420 and a rear connecting support 430, wherein the middle upper connecting support 410 is fixedly connected with the support framework on the middle lower connecting support 420, the middle lower connecting support 420 is used for fixing the upper middle connecting support 410 and the storage box on the floor of a vehicle body, and the rear connecting support 430 is used for fixing the support framework on the floor of the vehicle body.
In some embodiments, referring to fig. 7, the rear connecting bracket 430 includes a rear bracket main body, a Y-directional crush rib and an X-directional cantilever structure 432 provided on the rear bracket main body, a pair of first mounting portions 431 extending outward from the rear bracket main body and disposed in opposite directions, and a pair of second mounting portions 433 extending from a bottom of the rear bracket main body and disposed in the same direction, wherein the pair of first mounting portions 431 are fixed on the supporting framework, and the pair of second mounting portions 433 are used for being fixed on a vehicle body floor;
in an embodiment, Y is to the conquassation muscle and X includes two pairs of Y to conquassation muscle and two X to cantilever structure that arrange to cantilever structure 432 side by side interval, the after-poppet main part includes the supporter of vertical setting, two X is respectively along cantilever structure the supporter slope extends to be connected to on the first installation department 431, Y provides Z to the ulcerate induction of contracting for the after linking bridge to the conquassation muscle, X is first installation department to cantilever structure with provide the space of contracting between the supporter for relieve head and bump stress.
Referring to fig. 8, each of the middle and lower connecting brackets 420 includes a middle and lower bracket main body 422, a first Y-direction crush structure 421 extending from the middle and lower bracket main body 422 to the front lower side, and a second Y-direction crush structure 423 extending from the middle and lower bracket main body 422 to the rear lower side, wherein Z-direction crush induction is provided between the first Y-direction crush structure 421 and the middle and lower bracket main body 422, and between the second Y-direction crush structure 423 and the middle and lower bracket main body 422, so as to improve Z-direction crush performance of the metal bracket structure, and reduce overall structural strength of the metal bracket structure, thereby achieving an effect of reducing acceleration of the second platform of the dual-platform acceleration curve when the sub-instrument structure is subjected to head collision.
In one embodiment, a first connecting structure is disposed from the front end platform of the middle-lower support, a second connecting structure is disposed from the rear end platform, two pairs of third connecting structures 424 are extended from the bottom of the middle-lower support in the same direction, one pair of the first connecting structures is connected with the middle-upper support, one pair of the second connecting structures is connected with the storage box, and two pairs of the third connecting structures 424 are connected with the floor of the vehicle body.
In some embodiments, referring to fig. 9, the middle upper connecting bracket 410 includes a middle upper bracket main body, a pair of first mounting structures 411 extending upward from the middle upper bracket main body and disposed opposite to each other, a second mounting structure 412 extending outward from the middle upper bracket main body and disposed opposite to each other, and a third mounting structure disposed at the bottom of the middle upper bracket main body, wherein the pair of first mounting structures is connected to a supporting framework, and the pair of second mounting structures 412 is connected to the supporting framework. A pair of the third mounting structures are connected to the middle and lower frames.
Based on the same inventive concept, the embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements all or part of the method steps of the above method.
The present invention can implement all or part of the processes of the above methods, and can also be implemented by using a computer program to instruct related hardware, where the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Based on the same inventive concept, an embodiment of the present application further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program running on the processor, and the processor executes the computer program to implement all or part of the method steps in the method.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the computer device by executing or executing the computer programs and/or modules stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (e.g., a sound playing function, an image playing function, etc.); the storage data area may store data (e.g., audio data, video data, etc.) created according to the use of the cellular phone. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), servers and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for optimizing the structure of a sub-dashboard is characterized by comprising the following steps:
performing a head-on virtual simulation test to obtain head-on simulation test data;
acquiring a head-collision acceleration curve of a collision point according to the obtained head-collision simulation test data, and establishing a double-platform acceleration target curve according to the head-collision acceleration curve, wherein the double-platform acceleration target curve comprises the following steps: fitting a head touch acceleration curve according to the head touch and the acceleration trend and establishing a double-platform acceleration target curve through energy calculation;
according to vice instrument board head and bumping the requirement, carry out the analysis to two platform acceleration target curves, obtain the structural optimization strategy of vice instrument board structure, include: the obtained structure optimization strategy of the auxiliary instrument board structure is to improve the acceleration of the first section of platform, enhance and promote the acceleration peak value of the first section of platform through the early-stage structure, ensure that the kinetic energy of the head bumper is absorbed before collision, reduce the kinetic energy of subsequent head bumper, and simultaneously reduce the strength of the second stage participating structural part, thereby reducing the acceleration peak value of the second section of platform;
and decomposing and optimizing the auxiliary instrument board structure according to the obtained structure optimization strategy of the auxiliary instrument board structure.
2. The method for optimizing a secondary instrument panel structure according to claim 1, wherein the step of decomposing and optimizing the secondary instrument panel structure according to the obtained structural optimization strategy of the secondary instrument panel structure comprises the following steps:
according to the obtained structure optimization strategy of the auxiliary instrument board structure, the auxiliary instrument board structure is optimized and decomposed into the optimization of a handrail structure and a metal support structure;
the handrail structure and the metal support structure are optimized respectively.
3. The method for optimizing a structure of a dash panel according to claim 2, wherein the step of optimizing the handle structure and the metal bracket structure respectively comprises the steps of:
the structural strength of the handrail structure is improved and optimized;
and the Z-direction collapse performance of the metal support structure is improved and optimized.
4. The method for optimizing a structure of a dash panel according to claim 3, wherein the step of optimizing the structural strength of the handle structure comprises the steps of:
and (4) lifting and optimizing the height and material thickness of the reinforcing ribs of the upper handrail plate of the handrail structure obtained by decomposition.
5. The method for optimizing a structure of a dash panel according to claim 3, wherein the step of optimizing the Z-direction collapse performance of the metal bracket structure comprises the following steps:
the Z-direction collapsing performance of the rear connecting support of the metal support structure is improved and optimized;
and the Z-direction collapse performance of the middle and lower connecting supports of the metal support structure is improved and optimized.
6. The method for optimizing a sub-instrument panel structure of claim 5, wherein the step of "optimizing the Z-collapse performance of the metal bracket structure" further comprises the steps of:
the Y-direction connection strength of the middle and upper connecting support and the auxiliary instrument board structure of the metal support structure is improved and optimized;
and the connection strength of the middle upper connecting bracket and the middle lower connecting bracket of the metal bracket structure is improved and optimized.
7. The sub-dash structure optimization method according to claim 1, further comprising the following steps after the step of "decomposing and optimizing the sub-dash structure according to the structure optimization strategy of the obtained sub-dash structure":
and (4) performing head-on test verification and modal test verification on the auxiliary instrument panel structure with the optimized structure.
8. A sub-dash panel structure to which the sub-dash structure optimization method according to any one of claims 1 to 7 is applied, comprising:
a support frame structure comprising a support frame;
the storage box structure comprises a storage box arranged in the support framework;
the handrail structure comprises a handrail arranged at the top of the support framework and close to the front end;
the auxiliary instrument panel body comprises an auxiliary instrument panel which is arranged at the top of the support framework and arranged in front of and behind the handrail;
the coating mechanism comprises a plurality of decorative plates for coating the supporting framework;
the metal support structure comprises an upper middle connecting support, a lower middle connecting support and a rear connecting support, wherein the upper middle connecting support is fixedly connected with the support framework on the lower middle connecting support, the upper middle connecting support and the storage box are fixed on a floor of a vehicle body by the lower middle connecting support, and the rear connecting support is used for fixing the support framework on the floor of the vehicle body.
9. The sub instrument panel structure of claim 8, wherein the rear connecting bracket includes a rear bracket body, Y-direction crush ribs and X-direction cantilever structures provided on the rear bracket body, a pair of first mounting portions oppositely provided and extending outward from the rear bracket body, and a pair of second mounting portions coaxially provided and extending from a bottom of the rear bracket body, the pair of first mounting portions being fixed to the supporting frame, the pair of second mounting portions being for fixing to a floor of a vehicle body;
the middle and lower connecting supports respectively comprise a middle and lower support main body, a first Y-direction crumple structure extending from the middle and lower support main body towards the front lower part and a second Y-direction crumple structure extending from the middle and lower support main body towards the rear lower part, a first connecting structure is arranged on a front end platform of the middle and lower support, a second connecting structure is arranged on a rear end platform of the middle and lower support, two pairs of third connecting structures which are arranged in the same direction extend from the front and back of the bottom of the middle and lower support, the first connecting structures are connected with the middle and upper support, the second connecting structures are connected with the storage box, and the third connecting structures are connected with the floor of the automobile body.
10. The sub-dash structure according to claim 9,
the middle-upper connecting support comprises a middle-upper support main body, a pair of first mounting structures which extend upwards from the middle-upper support main body and are arranged oppositely, a pair of second mounting structures which extend outwards from the middle-upper support main body and are arranged oppositely, and a third mounting structure which is arranged at the bottom of the middle-upper support main body, wherein the pair of first mounting structures are connected with a supporting framework, the pair of second mounting structures are connected with the supporting framework, and the third mounting structure is connected with the middle-lower support.
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| CN102024082A (en) * | 2010-12-15 | 2011-04-20 | 同济大学 | Method for realizing multidisciplinary and multi-objective optimization of structural system of automobile instrument panel |
| CN106934117A (en) * | 2017-02-22 | 2017-07-07 | 江铃汽车股份有限公司 | Automobile instrument panel assembly optimization method |
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| US6781676B2 (en) * | 2002-03-22 | 2004-08-24 | Trw Inc. | Structured lighting detection of vehicle occupant type and position |
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|---|---|---|---|---|
| CN102024082A (en) * | 2010-12-15 | 2011-04-20 | 同济大学 | Method for realizing multidisciplinary and multi-objective optimization of structural system of automobile instrument panel |
| CN106934117A (en) * | 2017-02-22 | 2017-07-07 | 江铃汽车股份有限公司 | Automobile instrument panel assembly optimization method |
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