CN105701301B - Automobile positive crash tests method and device - Google Patents
Automobile positive crash tests method and device Download PDFInfo
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- CN105701301B CN105701301B CN201610025644.5A CN201610025644A CN105701301B CN 105701301 B CN105701301 B CN 105701301B CN 201610025644 A CN201610025644 A CN 201610025644A CN 105701301 B CN105701301 B CN 105701301B
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- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
The present invention provides a kind of automobile positive crash tests method and device, and by establishing automotive wheel model, automotive wheel model includes: tire and wheel hub；Tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；Wheel hub includes: wheel rim, disc；To car body modeling and by automotive wheel model and car body models coupling, whole vehicle model is obtained；Parameter configuration is carried out to whole vehicle model according to practical automobile parameter to be tested, and positive crash tests are carried out to the whole vehicle model after parameter configuration.Simplified by carrying out Rational structure to true tire, building obtains vehicle deformation pattern and the close wheel model of actual tests deformation pattern in vehicle forward direction crash tests, lays a good foundation for the accuracy of complete automobile collision test result.Meanwhile the method is simple, implementation is good, practicability with higher and replicability, helps to save complete automobile collision security performance development cost and shortens the development cycle.
Description
Technical field
The present invention relates to automotive safety measuring technology more particularly to a kind of automobile positive crash tests method and devices.
Background technique
With the increase of car ownership, people increasingly pay attention to the security performance in automobile collision procedure.
Security performance in automobile collision procedure can be by emulating vehicle simulation model in the entire vehicle design stage
Crash tests are with the collision safety performance of the practical automobile of Accurate Prediction.Further, tire tests vehicle frontal collisions to come
Say it is an important test component, the deformation of tire would generally related influence vehicle threshold, the deformation of the components such as front wall.
However at present in the simulation model of vehicle, the simulation model of tire is in excessively fine or two kinds too simple
Design is extreme, excessively finely calculation amount is easily caused to increase if Design of Tire Structure is obtained, so that vehicle simulation model is in test rank
The speed of service of section is slow；If only model to the basic framework of tire and too simple, so that emulation tire and true wheel
It differs greatly between tire, causes emulation impact test data inaccuracy, can not provide for the collision safety performance of practical automobile can
The prediction data leaned on.Therefore, it is fast and can accurately reappear the method for true tyre performance to need to establish a kind of arithmetic speed, to mention
The accuracy of high complete automobile collision simulation result.
Summary of the invention
The present invention provides a kind of automobile positive crash tests method and device, is emulated with solving complete automobile collision in the prior art
As a result the problem of having differences between real collision test result passes through the wheel to play a key effect in colliding to automobile positive
The accurate modeling of tire improves the accuracy of vehicle forward direction collision simulation test, provides reliable examination for real collision test
Test data.
The present invention provides a kind of automobile positive crash tests method, comprising: establishes automotive wheel model, the automotive wheel
Model includes: tire and wheel hub；The tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue
Layer；The wheel hub includes: wheel rim, disc；The carcass is ring seal hollow structure；
To car body modeling and by the automotive wheel model and the car body models coupling, vehicle mould is obtained
Type；
Parameter configuration is carried out to the whole vehicle model according to practical automobile parameter to be tested, and to the vehicle after parameter configuration
Model carries out positive crash tests.
Optionally, the automotive wheel model of establishing includes:
Based on finite element method, the automotive wheel model is established using LS-DYNA software.
Optionally, the automotive wheel model of establishing includes:
The ring seal finite element model of the carcass is established using shell unit；The shell unit size is 7mm；The tire
Body uses the empty material MAT9 material of LS-DYNA；The carcass thickness is set as 1.0mm.
Optionally, the automotive wheel model of establishing includes:
The band-like annular finite element model of the steel belt is established using shell unit；The steel belt it is band-like
The normal direction of annular finite elements model is directed toward core wheel；The shell unit size is 7mm；The steel belt is using LS-DYNA's
Metal material MAT24 material；The steel belt thickness is set as 0.3mm.
Optionally, the automotive wheel model of establishing includes:
The band-like annular finite element model of the tread band is established using shell unit；The band-like annular of the tread band
The normal direction of finite element model is directed toward core wheel；The shell unit size is 7mm；The tread band uses the elastic material of LS-DYNA
Expect MAT1 material；The tread band thickness is set as 2mm.
Optionally, the automotive wheel model of establishing includes:
The band-like annular finite element model of the sidewall layer is established using shell unit；The band-like annular of the sidewall layer is limited
The normal direction of meta-model is perpendicular to the tire radius plane；The shell unit size is 7mm；The sidewall layer uses LS-DYNA
Metal material MAT24 material；The sidewall layer thickness is set as 0.3mm.
Optionally, the automotive wheel model of establishing includes:
The band-like annular finite element model of the tyre bead glue-line on the sidewall is established using shell unit；The tyre bead glue on the sidewall
The normal direction of the band-like annular finite element model of layer is perpendicular to the tire radius plane；The shell unit size is 7mm；The tire
The tyre bead glue-line of side uses the elastic material MAT1 material of LS-DYNA；The tyre bead bondline thickness on the sidewall is set as 2mm.
Optionally, the automotive wheel model of establishing includes:
The wheel rim and web pattern parameter for obtaining the practical automobile to be tested, according to the structural parameters benefit got
The finite element model of the wheel rim and the disc is established with shell unit；The wheel rim and the disc use the gold of LS-DYNA
Belong to material MAT24 material；The wheel rim thickness is set as 4mm, and the web thickness is set as 3mm.
Optionally, the method also includes:
According to the node fusion connection method in the finite element method, by the steel belt around the carcass
Outer diameter tyre surface carries out node with the carcass and merges；By the tread band around the outer diameter tyre surface and the steel wire of the carcass
Belt carries out node fusion；Sidewall face of the sidewall layer between the internal-and external diameter of the carcass is carried out with the carcass
Node fusion；Sidewall face of the tyre bead glue-line on the sidewall between the internal-and external diameter of the carcass is carried out with the sidewall layer
Node fusion；The annular outer surface of the wheel rim is carried out node with the internal diameter tyre surface of the carcass to merge, so that the wheel rim
It is connect with the carcass；The edge of the disc is carried out node with the carcass and the wheel rim respectively to merge.
The present invention also provides a kind of automobile positive crash tests devices, comprising:
Model building module, for establishing automotive wheel model, the automotive wheel model includes: tire and wheel hub；Institute
State tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；The wheel hub include: wheel rim,
Disc；The carcass is ring seal hollow structure.
Model integration module, for being modeled to car body and by the automotive wheel model and the car body model
In conjunction with obtaining whole vehicle model；
Test module, for carrying out parameter configuration to the whole vehicle model according to practical automobile parameter to be tested, and to ginseng
Number carries out positive crash tests with the whole vehicle model postponed.
Automobile positive crash tests method and device of the invention, by establishing automotive wheel model, automotive wheel model
It include: tire and wheel hub；Tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；Wheel hub
It include: wheel rim, disc；To car body modeling and by automotive wheel model and car body models coupling, whole vehicle model is obtained；
Parameter configuration is carried out to whole vehicle model according to practical automobile parameter to be tested, and the whole vehicle model after parameter configuration is carried out positive
Crash tests.To be simplified by carrying out Rational structure to true tire, building obtains the vehicle in vehicle forward direction crash tests
Deformation pattern and the close wheel model of actual tests deformation pattern have established base for the accuracy of complete automobile collision test result
Plinth.Meanwhile the method is simple, implementation is good, practicability with higher and replicability, helps to save complete automobile collision safety
Performance development expense and shortening development cycle.
Detailed description of the invention
Fig. 1 is the flow chart of the embodiment one of automobile positive crash tests method of the present invention；
Fig. 2 is the structural schematic diagram of wheel model in Fig. 1；
Fig. 3 is another structural schematic diagram of wheel model in Fig. 1；
Fig. 4 is the flow chart of the embodiment two of automobile positive crash tests method of the present invention；
Fig. 5 is the structural schematic diagram of wheel model in Fig. 4；
Fig. 6 is the load-deformation curve schematic diagram of automobile positive crash tests method of the present invention；
Fig. 7 is the structural schematic diagram of the embodiment one of automobile positive crash tests device of the present invention.
Detailed description of the invention: 1, carcass；2, tread band；3, the tyre bead glue-line on sidewall；4, wheel rim；5, disc；6, internal diameter tyre surface；
7, first edge；8, second edge；9, joint face.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.It should be noted that in the drawings or instructions,
Similar or identical element all uses identical appended drawing reference.In the present invention, in the absence of explanation to the contrary, use is whole
Vehicle coordinate system, the X forward direction of vehicle coordinate system are that the direction at vehicle rear portion is directed toward from Chinese herbaceous peony portion；Y forward direction is to be directed toward from vehicle driver side
Copilot side (left rudder) direction；Z forward direction is vertically upward.
Fig. 1 is the flow chart of the embodiment one of automobile positive crash tests method of the present invention, as shown in Figure 1, the present embodiment
Method include:
Step 101 establishes automotive wheel model, and automotive wheel model includes: tire and wheel hub；Tire include: carcass 1,
Steel belt, tread band 2, sidewall layer, sidewall tyre bead glue-line 3；Wheel hub includes: wheel rim 4, disc 5；Carcass 1 is annular
Close hollow structure.
Specifically, analyzing according to construction and rigidity property of the those skilled in the art to true wheel, emulation car is determined
The composition of model is taken turns, goes out the emulation car wheel model closest with true wheel performance with less component construction as far as possible.From
And the calculation amount during safety feature test can be not only reduced, but also can test for real collision and reliable emulation number is provided
According to.Fig. 2 is the schematic diagram of the wheel model, and Fig. 3 is the section structure diagram of wheel model.Wherein, carcass 1 is ring seal
Hollow structure (as shown in Figure 3), steel belt (not shown) are looped around the outer diameter tread surface of carcass 1, tread band 2
Around carcass 1 outer diameter tyre surface and be wrapped in outside steel belt.As shown in Figures 2 and 3, because steel belt is wrapped in tire
In face glue-line 2, therefore the steel belt is not shown in the figure.Sidewall layer (not shown) is between the internal-and external diameter of carcass 1
Sidewall face combined with carcass 1, sidewall layer is wrapped with the tyre bead glue-line 3 on sidewall.The annular outer surface of wheel rim 4 and carcass 1
Internal diameter tyre surface 6 combines, and the edge of disc 5 is combined with carcass 1 and wheel rim 4 respectively.
Step 102, to car body model and by automotive wheel model and car body models coupling, obtain vehicle mould
Type.
Specifically, the universal modeling method of this field can be used to the modeling of car body, or built using finite element method
Mould, so that it constitutes whole vehicle model, specific method step the application couple in relation to carbody modeling with after automotive wheel models coupling
This is with no restriction.
Step 103, according to practical automobile parameter to be tested to whole vehicle model carry out parameter configuration, and to parameter configuration after
Whole vehicle model carries out positive crash tests.
Specifically, to allow whole vehicle model to provide test data the most reliable, it can be according to practical automobile to be tested
Size and material parameter to whole vehicle model carry out parameter configuration so that whole vehicle model with really automotive performance to be tested it is complete
Matching, to guarantee and improve the accuracy of collision simulation test.
Automobile positive crash tests method provided in this embodiment, by establishing automotive wheel model, automotive wheel model
It include: tire and wheel hub；Tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；Wheel hub
It include: wheel rim, disc；To car body modeling and by automotive wheel model and car body models coupling, whole vehicle model is obtained；
Parameter configuration is carried out to whole vehicle model according to practical automobile parameter to be tested, and the whole vehicle model after parameter configuration is carried out positive
Crash tests.To be simplified by carrying out Rational structure to true tire, building obtains the vehicle in vehicle forward direction crash tests
Deformation pattern and the close wheel model of actual tests deformation pattern have established base for the accuracy of complete automobile collision test result
Plinth.Meanwhile the method is simple, implementation is good, practicability with higher and replicability, helps to save complete automobile collision safety
Performance development expense and shortening development cycle.
Fig. 4 is the flow chart of the embodiment two of automobile positive crash tests method of the present invention, and such as Fig. 4 simultaneously combines Fig. 2, Fig. 3
Shown, on the basis of the above embodiments, the method for the present embodiment includes:
Step 401 is based on finite element method, establishes automotive wheel model using LS-DYNA software.
Specifically, automotive wheel model includes: tire and wheel hub；Tire includes: carcass 1, steel belt, tread band
2, sidewall layer, sidewall tyre bead glue-line 3；Wheel hub includes: wheel rim 4, disc 5.Wherein,
The modeling method of carcass 1 in tire are as follows: the ring seal finite element model of carcass 1 is established using shell unit；Shell
Cell size is 7mm；Carcass 1 uses the empty material MAT9 material of LS-DYNA, and 1 thickness of carcass is set as 1.0mm.
The modeling method of steel belt in tire are as follows: the band-like annular for establishing steel belt using shell unit is limited
Meta-model；The normal direction of the band-like annular finite element model of steel belt is directed toward core wheel；Shell unit size is 7mm；Steel wire banding
Layer uses the metal material MAT24 material of LS-DYNA；Steel belt thickness is set as 0.3mm.
The modeling method of tread band 2 in tire are as follows: the band-like annular finite elements of tread band 2 are established using shell unit
Model；The normal direction of the band-like annular finite element model of tread band 2 is directed toward core wheel；Shell unit size is 7mm；Tread band 2 is adopted
With the elastic material MAT1 material of LS-DYNA；2 thickness of tread band is set as 2mm.
The modeling method of sidewall layer in tire are as follows: the band-like annular finite element model of sidewall layer is established using shell unit；
The normal direction of the band-like annular finite element model of sidewall layer is perpendicular to tire radius plane；Shell unit size is 7mm；Sidewall layer uses
The metal material MAT24 material of LS-DYNA；Sidewall layer thickness is set as 0.3mm.
The modeling method of the tyre bead glue-line 3 on the sidewall in tire are as follows: the band of the tyre bead glue-line 3 on sidewall is established using shell unit
Shape annular finite elements model；The normal direction of the band-like annular finite element model of the tyre bead glue-line 3 on sidewall is perpendicular to tire radius plane；
Shell unit size is 7mm；The tyre bead glue-line 3 on sidewall uses the elastic material MAT1 material of LS-DYNA；The tyre bead glue-line 3 on sidewall
Thickness is set as 2mm.
The modeling method of wheel rim 4 and disc 5 in tire are as follows: obtain 5 structure of wheel rim 4 and disc of practical automobile to be tested
Parameter establishes the finite element model of wheel rim 4 and disc 5 according to the structural parameters got using shell unit；Wheel rim 4 and disc 5
Using the metal material MAT24 material of LS-DYNA；4 thickness of wheel rim is set as 4mm, and 5 thickness of disc is set as 3mm.
Optionally, each component part of tire, such as carcass 1, steel belt, tread band 2, sidewall layer, sidewall
Tyre bead glue-line 3 etc., each component part with wheel hub, such as wheel rim 4, disc 5 can be melted using the node in finite element method
They are connected as an entirety by the connection method of conjunction, form complete wheel model.Especially by according in finite element method
Node fusion connection method, steel belt is subjected to node around outer diameter tyre surface and the carcass 1 of carcass and is merged；By tread rubber
Layer 2 carries out node with steel belt around the outer diameter tyre surface of carcass 1 and merges；By sidewall layer between the internal-and external diameter of carcass 1
Sidewall face and carcass 1 carry out node and merge；By the tyre bead glue-line 3 on sidewall around carcass 1 internal-and external diameter between sidewall face with
Sidewall layer carries out node fusion.Fig. 5 shows the schematic diagram of carcass 1 Yu 5 connection type of wheel rim 4 and disc, as shown in figure 5, will
The internal diameter tyre surface 6 of the annular outer surface of wheel rim 4 and carcass 1 carry out node merge (after fusion as in Fig. 5 carcass 1 combined with wheel rim 4
Shown in joint face 9 afterwards) so that wheel rim 4 is connect with carcass 1；Respectively by the edge (first edge 7 and second edge 8) of disc 5
Node is carried out with carcass 1 and wheel rim 4 to merge.
Step 402, to car body model and by automotive wheel model and car body models coupling, obtain vehicle mould
Type.
Step 403, according to practical automobile parameter to be tested to whole vehicle model carry out parameter configuration, and to parameter configuration after
Whole vehicle model carries out positive crash tests.
In addition, Fig. 6 is the load-deformation curve schematic diagram of automobile positive crash tests method of the present invention, as shown in fig. 6,
Abscissa is strain parameter, and ordinate is stress parameters.This field can be used for the setting of MAT9 and MAT1 material parameter
Conventional arrangement method；The setting of MAT24 material parameter used by wheel rim 4 and disc 5 can refer to practical automobile tire institute
Determine that the shape reaction material of the load-deformation curve occurs crisp under external force with the load-deformation curve of material
The various deformation processes such as property, plasticity, surrender, fracture.Steel belt and sidewall layer use identical MAT24 material, but it is answered
Force-strain curve is more strain rate material curves, and more strain rate material curves of steel belt and sidewall layer can refer to Fig. 6
Shown in stress-strain material curves.
To sum up, the present invention is by the application of Rational Simplification and reasonable material curve to actual wheel model structure, so that
Deformation pattern and actual tests deformation pattern of the wheel model in vehicle head-on crash simulation analysis process are very close, are whole
The accuracy of vehicle collision simulation result is laid a good foundation.Meanwhile the method is simple, exploitativeness is strong, touches it applied to vehicle
It hits in simulation model and is possibly realized, practicability with higher and replicability facilitate saving complete automobile collision security performance and open
Hair expense and shortening development cycle.
Fig. 7 is the structural schematic diagram of the embodiment one of automobile positive crash tests device of the present invention, as shown in fig. 7, this reality
The device for applying example includes:
Model building module 71, for establishing automotive wheel model, automotive wheel model includes: tire and wheel hub；Tire
Include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；Wheel hub includes: wheel rim, disc；Carcass is
Ring seal hollow structure.
Model integration module 72, for being modeled to car body and by automotive wheel model and car body models coupling,
Obtain whole vehicle model.
Test module 73, for carrying out parameter configuration to whole vehicle model according to practical automobile parameter to be tested, and to parameter
Positive crash tests are carried out with the whole vehicle model postponed.
The device of the present embodiment can be used for executing the technical solution of above method embodiment, realization principle and technology
Effect is similar, and details are not described herein again.
Automobile positive crash tests device provided in this embodiment, by establishing automotive wheel model, automotive wheel model
It include: tire and wheel hub；Tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；Wheel hub
It include: wheel rim, disc；To car body modeling and by automotive wheel model and car body models coupling, whole vehicle model is obtained；
Parameter configuration is carried out to whole vehicle model according to practical automobile parameter to be tested, and the whole vehicle model after parameter configuration is carried out positive
Crash tests.To be simplified by carrying out Rational structure to true tire, building obtains the vehicle in vehicle forward direction crash tests
Deformation pattern and the close wheel model of actual tests deformation pattern have established base for the accuracy of complete automobile collision test result
Plinth.Meanwhile the method is simple, implementation is good, practicability with higher and replicability, helps to save complete automobile collision safety
Performance development expense and shortening development cycle.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (3)
1. a kind of automobile positive crash tests method characterized by comprising
Automotive wheel model is established, the automotive wheel model includes: tire and wheel hub；The tire includes: carcass, pierce tap
Beam layer, tread band, sidewall layer, sidewall tyre bead glue-line；The wheel hub includes: wheel rim, disc；The carcass is ring seal
Hollow structure；
To car body modeling and by the automotive wheel model and the car body models coupling, whole vehicle model is obtained；
Parameter configuration is carried out to the whole vehicle model according to practical automobile parameter to be tested, and to the whole vehicle model after parameter configuration
Carry out positive crash tests；
Wherein, the automotive wheel model of establishing includes:
Based on finite element method, the automotive wheel model is established using LS-DYNA software；
The automotive wheel model of establishing includes:
The ring seal finite element model of the carcass is established using shell unit；The shell unit size is 7mm；The carcass is adopted
With the empty material MAT9 material of LS-DYNA；The carcass thickness is set as 1.0mm；
The automotive wheel model of establishing includes:
The band-like annular finite element model of the steel belt is established using shell unit；The band-like annular of the steel belt
The normal direction of finite element model is directed toward core wheel；The shell unit size is 7mm；The steel belt uses the metal of LS-DYNA
Material MAT24 material；The steel belt thickness is set as 0.3mm；
The automotive wheel model of establishing includes:
The band-like annular finite element model of the tread band is established using shell unit；The band-like annular of the tread band is limited
The normal direction of meta-model is directed toward core wheel；The shell unit size is 7mm；The tread band uses the elastic material of LS-DYNA
MAT1 material；The tread band thickness is set as 2mm；
The automotive wheel model of establishing includes:
The band-like annular finite element model of the sidewall layer is established using shell unit；The band-like annular finite elements mould of the sidewall layer
The normal direction of type is perpendicular to the tire radius plane；The shell unit size is 7mm；The sidewall layer uses the gold of LS-DYNA
Belong to material MAT24 material；The sidewall layer thickness is set as 0.3mm；
The automotive wheel model of establishing includes:
The band-like annular finite element model of the tyre bead glue-line on the sidewall is established using shell unit；The tyre bead glue-line on the sidewall
The normal direction of band-like annular finite element model is perpendicular to the tire radius plane；The shell unit size is 7mm；The sidewall
Tyre bead glue-line uses the elastic material MAT1 material of LS-DYNA；The tyre bead bondline thickness on the sidewall is set as 2mm；
The automotive wheel model of establishing includes:
The wheel rim and web pattern parameter for obtaining the practical automobile to be tested utilize shell according to the structural parameters got
Unit establishes the finite element model of the wheel rim and the disc；The wheel rim and the disc use the metal material of LS-DYNA
Expect MAT24 material；The wheel rim thickness is set as 4mm, and the web thickness is set as 3mm.
2. the method according to claim 1, wherein the method also includes:
According to the node fusion connection method in the finite element method, by the steel belt around the outer diameter of the carcass
Tyre surface carries out node with the carcass and merges；Outer diameter tyre surface and the steel wire banding by the tread band around the carcass
Layer carries out node fusion；Sidewall face of the sidewall layer between the internal-and external diameter of the carcass is subjected to node with the carcass
Fusion；Sidewall face of the tyre bead glue-line on the sidewall between the internal-and external diameter of the carcass is subjected to node with the sidewall layer
Fusion；The annular outer surface of the wheel rim is carried out node with the internal diameter tyre surface of the carcass to merge, so that the wheel rim and institute
State carcass connection；The edge of the disc is carried out node with the carcass and the wheel rim respectively to merge.
3. a kind of automobile positive crash tests device characterized by comprising
Model building module, for establishing automotive wheel model, the automotive wheel model includes: tire and wheel hub；The wheel
Tire include: carcass, steel belt, tread band, sidewall layer, sidewall tyre bead glue-line；The wheel hub includes: wheel rim, disc；
The carcass is ring seal hollow structure；
Model integration module, for being modeled to car body and by the automotive wheel model and the car body model knot
It closes, obtains whole vehicle model；
Test module for carrying out parameter configuration to the whole vehicle model according to practical automobile parameter to be tested, and matches parameter
The whole vehicle model postponed carries out positive crash tests；
Wherein, the model building module is specifically used for:
Based on finite element method, the automotive wheel model is established using LS-DYNA software；
The model building module is specifically also used to:
The ring seal finite element model of the carcass is established using shell unit；The shell unit size is 7mm；The carcass is adopted
With the empty material MAT9 material of LS-DYNA；The carcass thickness is set as 1.0mm；
The band-like annular finite element model of the steel belt is established using shell unit；The band-like annular of the steel belt
The normal direction of finite element model is directed toward core wheel；The shell unit size is 7mm；The steel belt uses the metal of LS-DYNA
Material MAT24 material；The steel belt thickness is set as 0.3mm；
The band-like annular finite element model of the tread band is established using shell unit；The band-like annular of the tread band is limited
The normal direction of meta-model is directed toward core wheel；The shell unit size is 7mm；The tread band uses the elastic material of LS-DYNA
MAT1 material；The tread band thickness is set as 2mm；
The band-like annular finite element model of the sidewall layer is established using shell unit；The band-like annular finite elements mould of the sidewall layer
The normal direction of type is perpendicular to the tire radius plane；The shell unit size is 7mm；The sidewall layer uses the gold of LS-DYNA
Belong to material MAT24 material；The sidewall layer thickness is set as 0.3mm；
The band-like annular finite element model of the tyre bead glue-line on the sidewall is established using shell unit；The tyre bead glue-line on the sidewall
The normal direction of band-like annular finite element model is perpendicular to the tire radius plane；The shell unit size is 7mm；The sidewall
Tyre bead glue-line uses the elastic material MAT1 material of LS-DYNA；The tyre bead bondline thickness on the sidewall is set as 2mm；
The wheel rim and web pattern parameter for obtaining the practical automobile to be tested utilize shell according to the structural parameters got
Unit establishes the finite element model of the wheel rim and the disc；The wheel rim and the disc use the metal material of LS-DYNA
Expect MAT24 material；The wheel rim thickness is set as 4mm, and the web thickness is set as 3mm.
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