CN110254515A - A kind of riding vehicle carriage of magnesium alloy and its design method that enhancing benefit is rigid - Google Patents
A kind of riding vehicle carriage of magnesium alloy and its design method that enhancing benefit is rigid Download PDFInfo
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- CN110254515A CN110254515A CN201910567628.2A CN201910567628A CN110254515A CN 110254515 A CN110254515 A CN 110254515A CN 201910567628 A CN201910567628 A CN 201910567628A CN 110254515 A CN110254515 A CN 110254515A
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 18
- 238000013461 design Methods 0.000 title claims abstract description 11
- 230000008901 benefit Effects 0.000 title description 7
- 238000004364 calculation method Methods 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 18
- 238000011156 evaluation Methods 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 238000012795 verification Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000037396 body weight Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
-
- 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
-
- 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]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
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- General Physics & Mathematics (AREA)
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Evolutionary Computation (AREA)
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- Architecture (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
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- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of enhancings to mend the rigid riding vehicle carriage of magnesium alloy and its design method, belongs to vehicle frame field.It includes front-axle beam, the back rest and the attachment beam being arranged between front-axle beam and the back rest that the rigid riding vehicle carriage of magnesium alloy is mended in enhancing；The design method of the rigid riding vehicle carriage of magnesium alloy is mended in enhancing, comprising the following steps: is modeled according to the planform size of vehicle frame in Hypermesh software, the finite element model of vehicle frame is imported into Ansys software；The Strength Calculation of various working is carried out in Ansys software.The present invention is designed using full Structure of magnesium alloy, it is sound construction, compact and rationally distributed, model by the size of vehicle frame simultaneously and then carries out intensive analysis to determine whether meeting the requirement of structural strength, eliminate the load test process in kind in reality, verification experimental verification method is more efficient, reduces verification experimental verification cost.
Description
Technical field
The present invention relates to vehicle frame fields, and in particular to a kind of riding vehicle carriage of magnesium alloy and its design side that enhancing benefit is rigid
Method.
Background technique
Exploitation alternative energy source, Energy Saving and raising fuel-economy are three Basic Ways of vehicle energy saving.And automobile is certainly
Weight is every to reduce 10%, and fuel consumption can reduce 6%-8%, and discharge can reduce by 4%.For passenger car, vehicle body accounts for vehicle matter
The 40%-60% of amount, about 70% oil consumption is used on body quality, and from the point of view of manufacturing cost, vehicle body accounts for integral vehicle cost
15%-30%.Traditional body structure material therefor is predominantly common or high strength low-carbon steel plate, but the power of new energy vehicle
The energy density of battery pack is limited, and steel white car body run-of-the-mill is about 400-550kg so that steel passenger car is continuous
It is difficult to make a breakthrough on boat mileage and battery availability factor, therefore automotive light weight technology is the important skill for improving course continuation mileage
Art measure, while the reduction of quality also brings the raising of manipulation convenience, braking distance to shorten, under Vehicular vibration reduction and abrasion
The benefits such as drop, component life raising.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of enhancings to mend the rigid riding vehicle carriage of magnesium alloy and its design
Method, specific technical solution are as follows:
A kind of riding vehicle carriage of magnesium alloy that enhancing benefit is rigid, including front-axle beam, the back rest and setting are between front-axle beam and the back rest
Attachment beam, front-axle beam and the back rest be symmetrical arranged about attachment beam and material that front-axle beam, the back rest and attachment beam use is magnesium
Alloy, front-axle beam includes more front anti-collision beams disposed in parallel, preceding fingerboard that front anti-collision beam both ends are set, setting preceding fingerboard with
Front beam between attachment beam and the front longitudinal beam being arranged between front anti-collision beam and attachment beam；Attachment beam includes being arranged in front-axle beam
More top plate stringers between the back rest, be arranged in the multiple groups sill strip between front-axle beam and the back rest and being located at below top plate stringer,
Chassis between sill strip, the roof rail being arranged between adjacent top plate stringer are set and are arranged in top plate stringer and door
Column beam between sill beam.
When the present invention is by impact force from front, the front anti-collision beam cooperation front longitudinal beam of front end is set to shock
Power is effectively buffered, and prevents the present invention from biggish deformation occurs, and provides protection to the passenger inside attachment beam, same to should this
When invention is by the impact force come from behind, impact force is effectively delayed about the attachment beam symmetrically arranged back rest with front-axle beam
It rushes and provides protection to the passenger inside attachment beam.Magnesium alloy is excellent light material simultaneously, in addition to lesser density,
Specific strength, specific stiffness and stable manufacturing process also with higher.Simultaneously compared with steel and aluminium alloy, magnesium alloy also has
High-damping coefficient has good damping noise reduction characteristic, and magnesium alloy electromagnetic wave shielding is good, is more suitable for electromagnetism interference
Demanding new energy vehicle carriage.
Preferably, the back rest includes more back buffer beams disposed in parallel, rear fingerboard that back buffer beam both ends are arranged in, sets
The floor side member setting the rear cross beam between rear fingerboard and attachment beam and being arranged between back buffer beam and attachment beam.
The present invention cooperates floor side member effectively to buffer impact force by the way that the back buffer beam of rearmost end is arranged in, and prevents
Biggish deformation occurs in knockout process for the present invention, provides protection to the passenger inside attachment beam.
Preferably, being filled with fibrous composite inside front longitudinal beam and floor side member.
Preferably, surface is equipped with interconnected in front-axle beam, the back rest and attachment beam in addition to front longitudinal beam and floor side member
Groove, fibrous composite is also filled in groove.
The present invention is by being filled in internal fibrous composite, to increase car body overall stiffness and intensity, transports improving
Under the premise of row security reliability, sufficient lightweight is realized.
Preferably, column beam include the front column being successively set between top plate stringer and sill strip, central post and
Rear column.
Preferably, fibrous composite is carbon fibre composite or basalt fiber composite material
Preferably, the cross sectional shape of groove is U-shaped or rectangular.
The design method of the rigid riding vehicle carriage of magnesium alloy is mended in a kind of enhancing, comprising the following steps:
(S1): being modeled according to the planform size of vehicle frame in Hypermesh software, the overall structure of vehicle frame is taken out
Middle face is taken, is then carried out using shell unit Shell181 discrete；
(S2): each load on vehicle frame being carried out by Hypermesh software to simplify processing, is reduced to concentrate matter
Amount is applied at mass center, is simulated using Mass21 unit to lumped mass, is then calculated by Beam188 unit and point contact
Lumped mass is connect by method with the junction position on vehicle frame, for using the side of node coupling at the welding for steel structure on vehicle frame
Method is modeled；
(S3): the finite element model of vehicle frame is imported into Ansys software；The first operating condition is carried out in Ansys software
Strength Calculation, the first work condition state is set in Ansys software, the first Work condition analogue vehicle frame is static feelings
Condition, the load under the first operating condition are the sum of self weight, load-carrying weight, integral device weight and the vertical dynamic load of vehicle frame, vehicle frame
It is each support and load-carrying load act in respective supporting beam, the constraint condition under the first operating condition is set in Ansys software,
The first vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the first lateral confinement is that frame cross constraint is lateral
Displacement, first longitudinal direction is constrained to constraint length travel at longitudinal beam supporting point, then to each point on vehicle frame in Ansys software
Equivalent stress carry out von Mises stress evaluation, judge the yield strength of the equivalent stress and frame materials of each point on vehicle frame
Size relation；
(S4): carrying out the Strength Calculation of second of operating condition in Ansys software, be arranged second in Ansys software
The case where kind of work condition state, the front end of second of Work condition analogue vehicle frame is by collision, the load under second of operating condition is vehicle frame
Self weight, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle frame is each
Support and load-carrying weight load act on respective support base, and the constraint condition under second of operating condition is arranged in Ansys software,
The second vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the second lateral confinement is except vehicle frame front end collision prevention girders
Remaining outer all crossbeam of supporting point constrained displacement constrain lateral displacement, and second longitudinal direction is constrained to constrain at longitudinal beam supporting point and indulge
To displacement, the evaluation of von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software, judges vehicle frame
The size relation of the yield strength of the equivalent stress and frame materials of upper each point；
(S5): carrying out the Strength Calculation of the third operating condition in Ansys software, third is set in Ansys software
The case where kind of work condition state, the rear end of the third Work condition analogue vehicle frame is by collision, the load under the third operating condition is vehicle frame
Self weight, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle frame is each
Support and load-carrying weight load act on respective support base, and the constraint condition under the third operating condition is arranged in Ansys software,
The vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame of third, third lateral confinement is except vehicle frame rear end rear cross beam
Remaining outer all crossbeam of supporting point constrained displacement constrain lateral displacement, and third longitudinal restraint is that constraint is vertical at longitudinal beam supporting point
To displacement, the evaluation of von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software, judges vehicle frame
The size relation of the yield strength of the equivalent stress and frame materials of upper each point；
(S6): carrying out the Strength Calculation of the 4th kind of operating condition in Ansys software, the 4th is arranged in Ansys software
The case where kind of work condition state, the left or right of the 4th kind of Work condition analogue vehicle frame is by collision, the load under the 4th kind of operating condition are
The self weight of vehicle frame, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle
Each support of frame and load-carrying weight load act on respective support base, and the pact under the 4th kind of operating condition is arranged in Ansys software
Beam condition, the 4th vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the 4th lateral confinement is frame cross
Lateral displacement is constrained, the 4th longitudinal restraint is remaining all stringer supporting point in addition to the central post supporting point constrained displacement of vehicle frame left end
Place's constraint length travel, then carries out the evaluation of von Mises stress to the equivalent stress of each point on vehicle frame in Ansys software,
Judge the size relation of the yield strength of the equivalent stress and frame materials of each point on vehicle frame.
The invention has the following advantages:
The present invention cooperates front longitudinal beam effectively to buffer impact force by the way that the front anti-collision beam of front end is arranged in, and prevents
Biggish deformation occurs for the present invention, provides protection to the passenger inside attachment beam, same of the invention to be hit by what is come from behind
When hitting power, impact force is effectively buffered about the attachment beam symmetrically arranged back rest with front-axle beam and attachment beam inside is multiplied
Visitor provides protection.The present invention is designed using full Structure of magnesium alloy, sound construction, compact and rationally distributed.It is multiple with single carbon fiber
Condensation material vehicle frame is compared, and cost is far low, simple process, and carbon fiber usage amount seldom significantly reduces car body weight, can effectively be solved
The certainly problem of passenger car course continuation mileage deficiency.Compared with traditional aluminium alloy and steel, the damping capacity of magnesium alloy is substantially better than,
There is significant effect of vibration and noise reduction, reduces vibrating fatigue failure probability, and promote the riding comfort of user；And magnesium alloy electromagnetism
Shielding is good, is more suitable for the demanding new energy vehicle carriage of electromagnetism interference.Pass through the size of magnesium alloy vehicle carriage simultaneously
Then size, which model, carries out intensive analysis to determine whether meeting the requirement of structural strength, eliminate the load in kind in reality
Lotus the test procedure, verification experimental verification method is more efficient, reduces verification experimental verification cost.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is cross-sectional view of the invention；
Fig. 3 is the partial enlarged view in Fig. 1 at A.
In figure: 1- front-axle beam；The 2- back rest；3- attachment beam；11- front anti-collision beam；Fingerboard before 12-；13- front beam；It is indulged before 14-
Beam；31- top plate stringer；32- sill strip；The chassis 33-；34- roof rail；35- column beam；21- back buffer beam；Fingerboard after 22-；
23- rear cross beam；24- floor side member；4- fibrous composite；5- groove；351- front column；352- central post；353- and rear vertical
Column.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment
Referring to Fig. 1 to Fig. 3, vehicle frame includes front-axle beam 1, the back rest 2 and is arranged between front-axle beam 1 and the back rest 2 in the present invention
Attachment beam 3, the material that front-axle beam 1 is symmetrical arranged with the back rest 2 about attachment beam 3 and front-axle beam 1, the back rest 2 and attachment beam 3 use are equal
For magnesium alloy, front-axle beam 1 includes more front anti-collision beams 11 disposed in parallel, preceding fingerboard 12 that 11 both ends of front anti-collision beam are arranged in, sets
The front longitudinal beam setting the front beam 13 between preceding fingerboard 12 and attachment beam 3 and being arranged between front anti-collision beam 11 and attachment beam 3
14；Attachment beam 3 includes more top plate stringers 31 being arranged between front-axle beam 1 and the back rest 2, is arranged between front-axle beam 1 and the back rest 2 simultaneously
It is vertical in adjacent top plate positioned at the multiple groups sill strip 32 of 31 lower section of top plate stringer, the chassis 33 being arranged between sill strip 32, setting
Roof rail 34 between beam 31 and the column beam 35 being arranged between top plate stringer 31 and sill strip 32.The back rest 2 includes more
Root back buffer beam 21 disposed in parallel, the rear fingerboard 22 that 21 both ends of back buffer beam are arranged in, setting are in rear fingerboard 22 and attachment beam 3
Between rear cross beam 23 and the floor side member 24 that is arranged between back buffer beam 21 and attachment beam 3.Column beam 35 includes successively setting
Set front column 351, central post 352 and the rear column 353 between top plate stringer 31 and sill strip 32.
When the present invention is by impact force from front, the front anti-collision beam 11 that front end is arranged in cooperates front longitudinal beam 14 right
Impact force is effectively buffered, and prevents the present invention from biggish deformation occurs, and provides protection to the passenger inside attachment beam 3, together
Should the present invention by the impact force come from behind when, be arranged in rearmost end back buffer beam 21 cooperate floor side member 24 to impact force
It is effectively buffered, prevents the present invention from biggish deformation occurring in knockout process, provide guarantor to the passenger inside attachment beam 3
Shield.The present invention is designed using full Structure of magnesium alloy simultaneously, sound construction, compact and rationally distributed.With single carbon fiber composite
Expect that 4 vehicle frames are compared, cost is far low, simple process, and carbon fiber usage amount seldom significantly reduces car body weight, can effectively solve to multiply
With the problem of vehicle course continuation mileage deficiency.Compared with traditional aluminium alloy and steel, the damping capacity of magnesium alloy is substantially better than, and is had aobvious
The effect of vibration and noise reduction of work reduces vibrating fatigue failure probability, and promotes the riding comfort of user；And magnesium alloy is electromagnetically shielded
Property is good, is more suitable for the demanding new energy vehicle carriage of electromagnetism interference.
With further reference to Fig. 2 and Fig. 3, fibrous composite 4 is filled with inside front longitudinal beam 14 and floor side member 24.It is wherein right
Built-in method is used in front longitudinal beam 14 and floor side member 24, the fiber that will be determined in advance via equal strength method and equivalent rigidity method design principle
Composite material 4 according to quantity, opsition dependent and direction pierce into inside front longitudinal beam 14 and floor side member 24, position and solidify.Front-axle beam 1, the back rest 2 with
And in attachment beam 3 in addition to front longitudinal beam 14 and floor side member 24, surface is equipped with the cross sectional shape of interconnected groove 5, groove 5
For U-shaped or rectangular, fibrous composite 4 is also filled in groove 5.Groove 5 first passes through design arrangement in surface of the present invention, dress in advance
The position cutting blocked will be welded again after the completion with welding to get through, surface is formed and run through door frame and interconnected groove 5, so
It is placed in groove 5 using fibrous composite 4 afterwards, is fixed and is solidified with the mode of splicing.The present invention passes through in being filled in
The fibrous composite 4 in portion under the premise of improving property safe and reliable to operation, is realized with increasing car body overall stiffness and intensity
Sufficient lightweight.
Fibrous composite 4, which is placed in groove 5, two kinds of schemes, first, the use of fibrous composite 4 penetrates, canoe
It is placed in groove 5, at turning, natural torsion is bypassed, and keeps each structural member and the composition of the fibrous composite of merging 4 one whole
Body.Second, entire vehicle frame is divided into front-end architecture part assembly, left end structural member assembly, right end structural member assembly, rear end structure part
Assembly, apex structure part assembly, each structural member assembly part are wound using a fibrous composite 4, ensure that each portion
The intensity of separation structure part entirety.Fibrous composite 4 is carbon fibre composite or basalt fiber composite material.
A kind of design method for the riding vehicle carriage of magnesium alloy that enhancing benefit is rigid in the present invention, comprising the following steps:
(S1): being modeled according to the planform size of vehicle frame in Hypermesh software, the overall structure of vehicle frame is taken out
Middle face is taken, is then carried out using shell unit Shell181 discrete；
(S2): each load on vehicle frame being carried out by Hypermesh software to simplify processing, is reduced to concentrate matter
Amount is applied at mass center, is simulated using Mass21 unit to lumped mass, is then calculated by Beam188 unit and point contact
Lumped mass is connect by method with the junction position on vehicle frame, for using the side of node coupling at the welding for steel structure on vehicle frame
Method is modeled；
(S3): the finite element model of vehicle frame is imported into Ansys software；The first operating condition is carried out in Ansys software
Strength Calculation, the first work condition state is set in Ansys software, the first Work condition analogue vehicle frame is static feelings
Condition, the load under the first operating condition are the sum of self weight, load-carrying weight, integral device weight and the vertical dynamic load of vehicle frame, vehicle frame
It is each support and load-carrying load act in respective supporting beam, the constraint condition under the first operating condition is set in Ansys software,
The first vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the first lateral confinement is that frame cross constraint is lateral
Displacement, first longitudinal direction is constrained to constraint length travel at longitudinal beam supporting point, then to each point on vehicle frame in Ansys software
Equivalent stress carry out von Mises stress evaluation, judge the yield strength of the equivalent stress and frame materials of each point on vehicle frame
Size relation；
(S4): carrying out the Strength Calculation of second of operating condition in Ansys software, be arranged second in Ansys software
The case where kind of work condition state, the front end of second of Work condition analogue vehicle frame is by collision, the load under second of operating condition is vehicle frame
Self weight, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle frame is each
Support and load-carrying weight load act on respective support base, and the constraint condition under second of operating condition is arranged in Ansys software,
The second vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the second lateral confinement is except vehicle frame front end collision prevention girders
Remaining outer all crossbeam of supporting point constrained displacement constrain lateral displacement, and second longitudinal direction is constrained to constrain at longitudinal beam supporting point and indulge
To displacement, the evaluation of von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software, judges vehicle frame
The size relation of the yield strength of the equivalent stress and frame materials of upper each point；
(S5): carrying out the Strength Calculation of the third operating condition in Ansys software, third is set in Ansys software
The case where kind of work condition state, the rear end of the third Work condition analogue vehicle frame is by collision, the load under the third operating condition is vehicle frame
Self weight, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle frame is each
Support and load-carrying weight load act on respective support base, and the constraint condition under the third operating condition is arranged in Ansys software,
The vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame of third, third lateral confinement is except vehicle frame rear end rear cross beam
Remaining outer all crossbeam of supporting point constrained displacement constrain lateral displacement, and third longitudinal restraint is that constraint is vertical at longitudinal beam supporting point
To displacement, the evaluation of von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software, judges vehicle frame
The size relation of the yield strength of the equivalent stress and frame materials of upper each point；
(S6): carrying out the Strength Calculation of the 4th kind of operating condition in Ansys software, the 4th is arranged in Ansys software
The case where kind of work condition state, the left or right of the 4th kind of Work condition analogue vehicle frame is by collision, the load under the 4th kind of operating condition are
The self weight of vehicle frame, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle
Each support of frame and load-carrying weight load act on respective support base, and the pact under the 4th kind of operating condition is arranged in Ansys software
Beam condition, the 4th vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the 4th lateral confinement is frame cross
Lateral displacement is constrained, the 4th longitudinal restraint is remaining all stringer supporting point in addition to the central post supporting point constrained displacement of vehicle frame left end
Place's constraint length travel, then carries out the evaluation of von Mises stress to the equivalent stress of each point on vehicle frame in Ansys software,
Judge the size relation of the yield strength of the equivalent stress and frame materials of each point on vehicle frame.
Then the present invention, which model by the size of magnesium alloy vehicle carriage, carries out intensive analysis to determine whether full
The requirement of sufficient structural strength eliminates the load test process in kind in reality, and verification experimental verification method is more efficient, reduces examination
Verifying cost.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. the rigid riding vehicle carriage of magnesium alloy is mended in a kind of enhancing, which is characterized in that exist including front-axle beam (1), the back rest (2) and setting
Attachment beam (3), the front-axle beam (1) between front-axle beam (1) and the back rest (2) and the back rest (2) be symmetrical arranged about attachment beam (3) and
The material that the front-axle beam (1), the back rest (2) and attachment beam (3) use is magnesium alloy, and the front-axle beam (1) includes more parallel
The front anti-collision beam (11) of setting, setting the preceding fingerboard (12) at front anti-collision beam (11) both ends, setting preceding fingerboard (12) with connect
The front longitudinal beam (14) of front beam (13) and setting between front anti-collision beam (11) and attachment beam (3) between beam (3)；
The attachment beam (3) includes more top plate stringers (31) being arranged between front-axle beam (1) and the back rest (2), is arranged in front-axle beam
(1) the multiple groups sill strip (32) between the back rest (2) and below top plate stringer (31), setting are between sill strip (32)
Chassis (33), the roof rail (34) being arranged between adjacent top plate stringer (31) and setting are in top plate stringer (31) and threshold
Column beam (35) between beam (32).
2. the rigid riding vehicle carriage of magnesium alloy is mended in enhancing according to claim 1, which is characterized in that the back rest (2) packet
Include more back buffer beams (21) disposed in parallel, setting back buffer beam (21) both ends rear fingerboard (22), be arranged in rear fingerboard
(22) rear cross beam (23) between attachment beam (3) and the floor side member being arranged between back buffer beam (21) and attachment beam (3)
(24)。
3. the rigid riding vehicle carriage of magnesium alloy is mended in enhancing according to claim 2, which is characterized in that the front longitudinal beam (14)
It is internal filled with fibrous composite (4) with floor side member (24).
4. the rigid riding vehicle carriage of magnesium alloy is mended in enhancing according to claim 3, which is characterized in that the front-axle beam (1), after
In beam (2) and attachment beam (3) in addition to front longitudinal beam (14) and floor side member (24), surface be equipped with interconnected groove (5),
Also the fibrous composite (4) are filled in the groove (5).
5. the rigid riding vehicle carriage of magnesium alloy is mended in enhancing according to claim 1, which is characterized in that the column beam (35)
Including the front column (351), central post (352) and rear column being successively set between top plate stringer (31) and sill strip (32)
(353)。
6. the rigid riding vehicle carriage of magnesium alloy is mended in enhancing according to claim 4, which is characterized in that the fiber composite material
Expect that (4) are carbon fibre composite or basalt fiber composite material.
7. the rigid riding vehicle carriage of magnesium alloy is mended in enhancing according to claim 4, which is characterized in that the groove (5)
Cross sectional shape is U-shaped or rectangular.
8. the design method that the rigid riding vehicle carriage of magnesium alloy is mended in a kind of enhancing, which comprises the following steps:
(S1): being modeled according to the planform size of vehicle frame in Hypermesh software, in the overall structure extraction of vehicle frame
Then face is carried out discrete using shell unit Shell181；
(S2): each load on vehicle frame being carried out by Hypermesh software to simplify processing, lumped mass is reduced to and applied
It is added at mass center, lumped mass is simulated using Mass21 unit, then pass through Beam188 unit and point contact algorithm will
Lumped mass is connect with the junction position on vehicle frame, at the welding for steel structure on vehicle frame use node coupling method into
Row modeling；
(S3): the finite element model of vehicle frame is imported into Ansys software；The knot of the first operating condition is carried out in Ansys software
The first work condition state is arranged in structure Strength co-mputation in Ansys software, the first Work condition analogue vehicle frame is static situation, the
A kind of load under operating condition is the sum of self weight, load-carrying weight, integral device weight and the vertical dynamic load of vehicle frame, each of vehicle frame
Support and load-carrying load act in respective supporting beam, and the constraint condition under the first operating condition is arranged in Ansys software, and first hangs down
Vertical deviation is constrained to the supporting point for being constrained to all bottom beams of vehicle frame, the first lateral confinement is that frame cross constrains lateral displacement,
First longitudinal direction is constrained at longitudinal beam supporting point constraint length travel, then in Ansys software on vehicle frame each point etc.
Efficacy carries out the evaluation of von Mises stress, judges the big of the yield strength of the equivalent stress and frame materials of each point on vehicle frame
Small relationship；
(S4): carrying out the Strength Calculation of second of operating condition in Ansys software, second of work is set in Ansys software
The case where condition state, the front end of second of Work condition analogue vehicle frame is by collision, the load under second of operating condition be vehicle frame self weight,
The sum of load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and steering load, wherein each support of vehicle frame
And load-carrying weight load acts on respective support base, is arranged the constraint condition under second of operating condition in Ansys software, second
The vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the second lateral confinement is except vehicle frame front end collision prevention girders support
Remaining outer all crossbeam of point constrained displacement constrain lateral displacement, and second longitudinal direction, which is constrained at longitudinal beam supporting point, constrains longitudinal position
It moves, the evaluation of von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software, judge each on vehicle frame
The size relation of the yield strength of the equivalent stress and frame materials of point；
(S5): carrying out the Strength Calculation of the third operating condition in Ansys software, the third work is set in Ansys software
The case where condition state, the rear end of the third Work condition analogue vehicle frame is by collision, the load under the third operating condition be vehicle frame self weight,
The sum of load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and steering load, wherein each support of vehicle frame
And load-carrying weight load acts on respective support base, and the constraint condition under the third operating condition, third are arranged in Ansys software
The vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, third lateral confinement is except vehicle frame rear end rear cross beam supports
Remaining outer all crossbeam of point constrained displacement constrain lateral displacement, and third longitudinal restraint is that longitudinal position is constrained at longitudinal beam supporting point
It moves, the evaluation of von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software, judge each on vehicle frame
The size relation of the yield strength of the equivalent stress and frame materials of point；
(S6): carrying out the Strength Calculation of the 4th kind of operating condition in Ansys software, the 4th kind of work is set in Ansys software
The case where condition state, the left or right of the 4th kind of Work condition analogue vehicle frame is by collision, the load under the 4th kind of operating condition is vehicle frame
Self weight, load-carrying weight, integral device weight, vertical dynamic load, longitudinal dynamic loading and the sum of turn to load, wherein vehicle frame
Each support and load-carrying weight load act on respective support base, and the constraint article under the 4th kind of operating condition is arranged in Ansys software
Part, the 4th vertical supporting point constraint vertical deviation for being constrained to all bottom beams of vehicle frame, the 4th lateral confinement is frame cross constraint
Lateral displacement, the 4th longitudinal restraint are remaining all stringer support in addition to vehicle frame left end central post (352) supporting point constrained displacement
Length travel is constrained at point, and von Mises stress then is carried out to the equivalent stress of each point on vehicle frame in Ansys software and is commented
It is fixed, judge the size relation of the yield strength of the equivalent stress and frame materials of each point on vehicle frame.
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Application publication date: 20190920 |