CN115798640A - Tire tread wear simulation modeling method, application, equipment and computer software product - Google Patents
Tire tread wear simulation modeling method, application, equipment and computer software product Download PDFInfo
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- CN115798640A CN115798640A CN202211274259.6A CN202211274259A CN115798640A CN 115798640 A CN115798640 A CN 115798640A CN 202211274259 A CN202211274259 A CN 202211274259A CN 115798640 A CN115798640 A CN 115798640A
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Abstract
The invention relates to the field of tire finite element simulation modeling and analysis methods, in particular to a tire tread wear simulation modeling method, application, equipment and a computer software product. According to the method, a tire entity model with the strip-shaped patterns can be generated only by establishing a tire 2D finite element model with the grooves and rotating the model by 360 degrees around a tire inner mandrel, and then the model is used for tire abrasion simulation analysis without pattern binding. The modeling method is simple in process, can effectively shorten the 3D modeling time of the tire with the patterns, solves the problem of high complexity of tire abrasion simulation modeling, and improves the tire abrasion analysis efficiency. Meanwhile, the running state of the tire under the complex working condition can be simulated, and the friction work of the tire under the complex working condition can be calculated. And the modeling method does not need technicians to be familiar with three-dimensional design, and the implementation cost is low.
Description
Technical Field
The invention relates to the field of tire finite element simulation modeling and analysis methods, in particular to a tire tread wear simulation modeling method and an analysis method with stripe patterns, which are suitable for finite element simulation modeling and analysis of tread wear behaviors of various tires such as all-steel radial tires, semi-steel radial tires, bias tires, engineering tires and the like.
Background
Abrasion is an important index for evaluating tire performance, and is related to the safety and service life of the tire. The tire abrasion performance is influenced by various factors such as materials, structures, road conditions, driving habits and the like, and the abrasion behavior is very complex. The main cause of tire wear is relative slippage between the tread and the road surface. Early researches on the wear behavior of tires mainly comprise tests, but the wear test period is long and the research cost is high. With the development of computer technology, finite element simulation analysis methods are widely applied in tire wear research.
The traditional tire wear finite element calculation modeling method mainly comprises the following steps: 1. dividing the tire into a smooth tire and a pattern; 2. establishing a plain tire single-pitch solid model; 3. establishing a 3D pattern model: assembling the 2D pattern unfolded top view on a plain tire solid model, extending and trimming to obtain a crown pattern surface, and sewing the surface; 4. trimming the entity by using the stitched sheet body to obtain a single-pitch entity; 5. and obtaining a complete 3D model of the tire with the patterns through the geometrical characteristics of the array. The binding process of the patterns and the solid tires in the modeling method is very complicated and takes long time, and only the friction work of the tires running under a single working condition can be calculated, so that the abrasion conditions of the tires under different working conditions such as acceleration, deceleration and the like in the actual use process cannot be accurately described.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a tire tread wear simulation modeling method which is simple in process, can effectively shorten the 3D modeling time of a tire with patterns, solves the problem of high complexity of tire wear simulation modeling, and improves the tire wear analysis efficiency. Meanwhile, the running state of the tire under the complex working condition can be simulated, and the friction work of the tire under the complex working condition can be calculated. And the modeling method does not need technicians to be familiar with three-dimensional design, and the implementation cost is low.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tire tread wear simulation modeling method comprises the following steps:
1) Carrying out grid division on the tire section material distribution diagram with the pattern groove, and then importing simulation software; inputting tire material attributes and performance parameters in simulation software, and establishing a 2D finite element analysis model of a single section of a tire;
2) Rotating the single section 2D finite element model with the grooves by 360 degrees around the tire centerline to obtain a 3D tire solid model with longitudinal patterns;
3) Acquiring a transient sliding distance U and a shearing force F of each node of the tread; calculating the shearing combination of the jth node of the ith sectionForce of
Resultant slip
The friction work of the ith j-th node is:
4) Establishing a finite element model;
5) Dividing the tire into a plurality of sections by using abrasion post-processing software, wherein n sections are in contact with the ground, so that the friction work value of the n sections is required to be matched into 1 section; that is, the friction work of each node of the tire section is the total friction work of n sections
The friction work of the fitting cross section is the friction work W of the tire f ＝∑W ijf ；
6) Performing iterative calculation of contact friction behavior by using the updated abrasion profile by adopting an abrasion post-processing method; through multiple iterations, calculating the friction power distribution condition of the tire tread after each running; and finally obtaining a friction work model of the tire.
Preferably, the tire material properties and performance parameters in the step 1) include material constitutive characteristics, mechanical boundary conditions, tire structure parameters and cord expansion coefficients.
Preferably, the rubber material in the step 1) is described by a Yeoh constitutive model, and the framework material is defined by a Rebar unit; the unit type of the rubber material adopts CGAX4H, and the unit type of the framework material adopts SFMGAX1; the rim and the road surface are defined as analytic rigid bodies, and a penalty function contact algorithm is respectively adopted by the tire and the rim and the tire and the road surface.
Preferably, in the step 2), tire inflation, loading and rolling analysis are performed by extracting tire material properties and mechanical property information of each component in the Abaqus and giving working conditions such as air pressure, load, acceleration and the like.
Preferably, in step 3), an Abaqus solver is used to obtain the transient slip distance U and the shear force F of each node of the tread.
Preferably, in the step 5), a self-adaptive boundary displacement method is adopted to perform geometric updating on the space grid after each step length; the total analysis step is 1, calculation is carried out in 10 steps, after the calculation of each analysis step is completed, the tread profile is changed, the friction power is calculated by using the changed profile, a new profile is derived to carry out the calculation of the next analysis step, and the friction power distribution condition of the tread of the tire after each running is specifically calculated through multiple iterations.
Further, the invention also discloses the application of the method in tire design. The method is suitable for finite element simulation modeling and analysis of the tread wear behavior of various tires such as all-steel radial tires, semi-steel radial tires, bias tires, engineering tires and the like.
Further, the invention also discloses a computer device comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to realize the method.
Further, the present invention also discloses a computer readable storage medium having stored thereon a computer program or instructions which, when executed by a processor, implement the method.
Further, the invention also discloses a computer program product comprising a computer program or instructions which, when executed by a processor, implement the method.
By adopting the technical scheme, the method only needs to establish the tire 2D finite element model with the grooves, rotates the model for 360 degrees around the tire inner mandrel to generate the tire entity model with the strip-shaped patterns, and then carries out the tire abrasion simulation analysis by the model without binding the patterns. The modeling method is simple in process, can effectively shorten the 3D modeling time of the tire with the patterns, solves the problem of high complexity of tire abrasion simulation modeling, and improves the tire abrasion analysis efficiency. Meanwhile, the running state of the tire under the complex working condition can be simulated, and the friction work of the tire under the complex working condition can be calculated. And the modeling method does not need technicians to be familiar with three-dimensional design, and the implementation cost is low.
Drawings
FIG. 1 is a schematic diagram of a tire wear finite element simulation technique according to the present invention.
FIG. 2 is a 3D finite element model of a tire of the present invention.
FIG. 3 is data of the frictional work of each node of a single section of a tire according to the present invention.
FIG. 4 is a comparison of tire tread wear profiles.
FIG. 5 is a comparison graph of the profile of a tire tread wear process.
Detailed Description
The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.
A method of modeling tire tread wear simulation as shown in fig. 1, the method comprising the steps of:
1. and (4) carrying out meshing on the tire section material distribution diagram with the groove, and then importing simulation software. The tire material attribute and performance parameters including material constitutive characteristics, mechanical boundary conditions, tire structure parameters, cord thread expansion coefficient and the like are input into simulation software, and a 2D finite element analysis model of a single section of the tire is established. Wherein, the rubber material is described by a Yeoh constitutive model, and the framework material is defined by a Rebar unit. The unit type of the rubber material adopts CGAX4H, and the unit type of the framework material adopts SFMGAX1. The rim and the road surface are defined as analytic rigid bodies, and the tire and the rim and the tire and the road surface respectively adopt a penalty function contact algorithm.
2. And (3) rotating the single section 2D finite element model with the grooves by 360 degrees around the tire centerline to obtain a 3D tire solid model with longitudinal patterns (as shown in figure 2). And (3) extracting the attribute of the tire material and the mechanical property information of each component from the Abaqus, and giving working conditions such as air pressure, load, speed and the like to carry out tire inflation, loading and rolling analysis.
3. And obtaining the transient slip distance U and the shearing force F of each node of the tread by using an Abaqus solver. Calculating the shearing resultant force of the jth node of the ith section
Combined sliding
The friction work of the ith and jth node is:
4. and establishing a finite element model, and performing free rolling, driving and braking simulation calculation on the tire respectively.
5. As shown in fig. 3, the abrasion post-processing software is used to divide the tire into several sections, wherein n sections are in contact with the ground, so that the friction work value of n sections needs to be fitted to 1 section. That is, the friction work of each node of the tire section is the total friction work of n sections
The friction work of the fitting cross section is the friction work W of the tire f ＝∑W ijf 。
6. And (4) performing iterative calculation of contact friction behavior by using the updated abrasion profile by adopting an abrasion post-processing method. And adopting a self-adaptive boundary displacement method to geometrically update the space grid after each step length. Specifically, the total analysis step is 1, calculation is carried out in 10 steps, after the calculation of each analysis step is completed, the tread profile is changed, the friction work is calculated by using the changed profile, a new profile is derived to carry out the calculation of the next analysis step, and through multiple iterations, the friction work distribution condition of the tread of the tire after each running is specifically calculated. Finally obtaining the friction work model of the tire.
7. The invention is provided with two different embodiments and adopts the friction work calculation method to calculate the friction work under complex working conditions. And carrying out weighted average on the friction work data of each working condition according to the percentage of the traveled mileage to obtain the friction work of the tire under the mixed traveling working condition.
Of course, the tire wear simulation 3D modeling method provided by the invention can also be applied to non-pattern tire wear simulation modeling and analysis, and provides a theoretical basis for optimizing the tire wear performance.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A simulation modeling method for tire tread wear is characterized by comprising the following steps:
1) Carrying out grid division on the tire section material distribution diagram with the pattern groove, and then importing simulation software; inputting tire material attributes and performance parameters in simulation software, and establishing a 2D finite element analysis model of a single section of a tire;
2) Rotating the single section 2D finite element model with the grooves by 360 degrees around the tire centerline to obtain a 3D tire solid model with longitudinal patterns;
3) Acquiring a transient sliding distance U and a shearing force F of each node of the tread; calculating the shearing resultant force of the jth node of the ith section
Combined sliding movement
；
The friction work of the ith j-th node is:
；
4) Establishing a finite element model;
5) Dividing the tire into a plurality of sections by using abrasion post-processing software, wherein n sections are in contact with the ground, and fitting the friction work values of the n sections into 1 section; that is, the friction work of each node of the tire section is the total friction work W of n sections ijf =
The friction work of the fitting section, i.e. the friction work of the tire, is W f =
；
6) Performing iterative calculation of contact friction behavior by using the updated abrasion profile by adopting an abrasion post-processing method; through multiple iterations, calculating the friction power distribution condition of the tire tread after each running; finally obtaining the friction work model of the tire.
2. The tire tread wear simulation modeling method of claim 1, wherein the tire material properties and performance parameters of step 1) include material constitutive characteristics, mechanical boundary conditions, tire structural parameters, and cord expansion coefficients.
3. The tire tread wear simulation modeling method according to claim 1, wherein step 1) the rubber material is described by a Yeoh constitutive model, and the framework material is defined by Rebar units; the unit type of the rubber material adopts CGAX4H, and the unit type of the framework material adopts SFMGAX1; the rim and the road surface are defined as analytic rigid bodies, and the tire and the rim and the tire and the road surface respectively adopt a penalty function contact algorithm.
4. The tire tread wear simulation modeling method according to claim 1, wherein step 2) is implemented by extracting tire material properties and mechanical property information of each component in Abaqus, and performing tire inflation, loading and rolling analysis under the conditions of air pressure, load, acceleration and the like.
5. The tire tread wear simulation modeling method according to claim 1, wherein step 3) utilizes an Abaqus solver to obtain the transient slip distance U and the shear force F of each node of the tread.
6. The tire tread wear simulation modeling method of claim 1, wherein step 5) employs an adaptive boundary displacement method to geometrically update the spatial grid after each step; preferably, the total analysis step is 1, calculation is carried out in 10 steps, after the calculation of each analysis step is completed, the tread profile is changed, the friction work is calculated by using the changed profile, a new profile is derived to carry out the calculation of the next analysis step, and the friction work distribution condition of the tread of the tire after each running is specifically calculated through multiple iterations.
7. Use of the method according to any one of claims 1 to 6 in tire design, preferably for finite element simulation modeling and analysis of tread wear behavior of all-steel, semi-steel radial tires, bias tires, engineering tires and the like.
8. A computer device comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to implement the method of any one of claims 1 to 6.
9. A computer-readable storage medium, on which a computer program or instructions are stored, which, when executed by a processor, carries out the method of any one of claims 1 to 6.
10. A computer program product comprising a computer program or instructions, characterized in that the computer program or instructions, when executed by a processor, implements the method of any one of claims 1 to 6.
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| CN202211274259.6A CN115798640A (en) | 2022-10-18 | 2022-10-18 | Tire tread wear simulation modeling method, application, equipment and computer software product |
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| CN202211274259.6A CN115798640A (en) | 2022-10-18 | 2022-10-18 | Tire tread wear simulation modeling method, application, equipment and computer software product |
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| CN202211274259.6A Pending CN115798640A (en) | 2022-10-18 | 2022-10-18 | Tire tread wear simulation modeling method, application, equipment and computer software product |
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