CN116502507B - Simulation evaluation method for delamination damage performance in truck meridian wheel crown - Google Patents
Simulation evaluation method for delamination damage performance in truck meridian wheel crown Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 57
- 230000032798 delamination Effects 0.000 title claims abstract description 43
- 238000011156 evaluation Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 63
- 238000004364 calculation method Methods 0.000 claims abstract description 25
- 238000010008 shearing Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000010586 diagram Methods 0.000 claims description 10
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- 238000005516 engineering process Methods 0.000 claims description 5
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- 229910003460 diamond Inorganic materials 0.000 claims description 3
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- 238000012546 transfer Methods 0.000 claims description 3
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- 238000000638 solvent extraction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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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- G06F30/00—Computer-aided design [CAD]
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- G06F30/17—Mechanical parametric or variational design
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- 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
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention relates to the technical field of tire performance evaluation, in particular to a simulation evaluation method for delamination damage performance in a truck meridian tire crown. The invention comprises the following steps: and (3) performing simulation analysis and calculation on the static loading of the tire, determining delamination simulation indexes in the crown, calculating the shear strain amplitude of the simulation indexes, and comparing the multi-scheme simulation evaluation indexes. The rubber material positioned in the crown repeatedly generates shear deformation due to the shearing action, which is a mechanical cause of delamination damage in the tire crown, so that the LE13 shear strain amplitude of the rubber material adjacent to the outermost belt layer at the center of the crown of the truck radial tire is used as an evaluation index; and (3) carrying out multi-scheme tire static loading simulation calculation, wherein a scheme with the minimum amplitude value at the central position LE13 of the crown is a preferable scheme. According to the invention, through tire loading deformation analysis, the damage caused by crown delamination in the early use process of the tire is avoided in the early design stage, and effective support is provided for prolonging the service life of the tire product and improving the research and development efficiency of the tire product.
Description
Technical Field
The invention relates to the technical field of tire performance evaluation, in particular to a simulation evaluation method for delamination damage performance in a truck meridian tire crown.
Background
In order to meet the use requirement, the heavy duty radial tire is required to be internally filled with high-pressure gas, and under the severe use condition of high pressure and high load, delamination damage between the tire crown center rubber material and the belt layer framework material is one of the main problems affecting the service life of the heavy duty radial tire. In order to improve the service life of the radial truck tire and avoid premature failure of the tire product due to delamination damage in the crown, for example, the tire cap layer pretension test method, equipment and computer program product disclosed in China publication No. CN114218838A are required to study the mechanical principle of delamination damage in the crown of the tire through the technical means of mechanical simulation, and determine reasonable evaluation indexes for evaluating the performance difference of delamination damage in the crown between tire design schemes, and rapidly and optimally select the design scheme. At present, a simulation evaluation method for delamination damage in a load radial wheel crown is not developed, the delamination damage mechanism in the load radial wheel crown is not clear, and a reasonable simulation result durability evaluation index is not available.
Disclosure of Invention
The invention aims to solve the technical problems that: the simulation evaluation method for the delamination damage performance in the crown of the truck meridian tire is capable of effectively evaluating the influence of structural difference on the delamination damage performance in the crown of the tire and effectively evaluating the delamination performance difference in the crown of the tire between tire design schemes.
The technical scheme of the invention is as follows:
a simulation evaluation method for delamination damage performance in a truck meridian wheel crown comprises the following parts:
s1, performing simulation analysis and calculation on static loading of a tire: static loading simulation calculation is carried out to obtain a three-dimensional geometric shape of the tire;
s2, determining delamination simulation indexes in the crown: the rubber material in the crown position repeatedly generates shear deformation due to the shearing action, which is a mechanical cause of delamination damage in the tire crown, so that the LE13 shear strain amplitude of the rubber material adjacent to the outermost belt layer in the center of the crown is used as an evaluation index for influencing the delamination damage performance in the tire crown;
s3, calculating a simulation index shear strain amplitude: LE13 shear strain amplitude is the difference between the maximum and minimum values of shear strain;
s4, comparing the multi-scheme simulation evaluation indexes: and (3) carrying out multi-scheme tire static loading simulation calculation, wherein a scheme with the minimum shearing strain amplitude at the central position LE13 of the crown is a preferable scheme.
To further illustrate, in the step S1, the tire static loading simulation analysis calculation includes the following steps:
s11, drawing a material distribution diagram by adopting two-dimensional drawing software, wherein the material distribution diagram comprises a boundary line of each rubber material of the tire and a boundary line of a framework material;
s12, carrying out finite element mesh division on a material distribution diagram by using mesh division software to generate a tire two-dimensional axisymmetric finite element model;
s13, assembling the two-dimensional axisymmetric finite element model into a rim of the analytic rigid body axisymmetric model, applying uniform pressure to the surface of the inner liner by referring to the inflation pressure in actual use of the tire, and submitting and completing inflation simulation calculation of the two-dimensional axisymmetric finite element model;
s14, generating a tire three-dimensional finite element grid model in the circumferential direction from the two-dimensional axisymmetric finite element model through Symmetric Model Generation technology of ABAQUS simulation analysis software;
transmitting the two-dimensional axisymmetric simulation analysis result to a tire three-dimensional finite element grid model through Symmetric Results Transfer technology of ABAQUS simulation analysis software;
s15, applying a loading force in the radial direction equal to the actual load to the tire three-dimensional finite element grid model, submitting simulation calculation, and deforming the tire three-dimensional finite element grid model after the calculation is completed.
Further describing, in the step S12, the unit types and the material properties of the two-dimensional axisymmetric finite element model of the tire are defined as follows:
the triangle unit type of the rubber material is CGAX3H;
the quadrilateral unit type of the rubber material is CGAX4H;
the tire framework material unit type is SFMGAX1;
giving the rubber material a Yeoh model super-elastic material attribute;
the wire elastic model material properties are imparted to the skeletal member.
Further describing, in the step S14, the method for generating the tire three-dimensional finite element mesh model along the circumferential direction is as follows:
generating a three-dimensional grid within a range of 50 degrees of the circumferential grounding area;
the three-dimensional grid is formed by symbiotic within 310 DEG of other areas in the circumferential direction.
Further describing, in the step S2, the determination of the delamination simulation index in the crown includes the following steps:
s21, opening a result file of simulation calculation completion, only displaying rubber materials on the outer side of the belt framework material, and selecting an explicit mode as a field variable LE13 strain cloud picture;
s22, an explicit tire longitudinal section unit observes the shape that the LE13 shear strain amplitude is the maximum value and the minimum value of the shear strain;
s23, the rubber material enters the grounding area I, the LE13 has the maximum shearing strain, and the shearing action changes the shape of the rubber material from rectangular shape to parallelogram with the upper left corner as an acute angle, and the angle change radian value of the rubber material is the LE13 shearing strain amplitude.
Further, in the step S21, the LE13 strain cloud chart is divided into a crown LE13 positive concentration area and a crown LE13 negative concentration area.
Further describing, in the step S23, the rubber material is deformed into a rectangle from a parallelogram with an acute upper left corner when entering the ground center; the rectangular shape changes into a diamond shape with an obtuse angle at the upper left corner in the grounding region II.
Further describing, in the step S3, the calculation of the simulation index shear strain amplitude includes the following steps:
the tire is longitudinally split through XZ, and only a three-dimensional model of the tire with a single side part of an explicit Y axis is divided into a maximum value of the shearing strain of a tire longitudinal section LE13 and a minimum value of the shearing strain of the tire longitudinal section LE 13;
the LE13 shear strain amplitude is the difference between the maximum and minimum values of the shear strain LE 13.
Compared with the prior art, the invention has the following beneficial effects:
aiming at delamination damage in the crown of the load radial wheel, the influence of structural difference on the performance of delamination damage in the crown of the tire can be effectively evaluated; determining a durability index for evaluating delamination in the crown of the wheel as the shear strain amplitude of the rubber material LE13 in the crown adjacent to the outermost belt; the delamination performance difference in the tire crown between tire design schemes is effectively evaluated, and effective support is provided for optimizing the tire structure design scheme and improving the performance of tire products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a flow schematic of the present invention.
Fig. 2 is a CAD tire material distribution diagram of the present invention.
FIG. 3 is a two-dimensional axisymmetric finite element mesh model of a tire of the present invention.
Fig. 4 is a diagram of a three-dimensional finite element mesh model of a tire of the present invention.
FIG. 5 is a three-dimensional geometry of a tire obtained by static loading simulation calculations of the present invention.
FIG. 6 is a graph showing the distribution of LE13 shear strain in the crown of the tire in the three-dimensional loading simulation result of the present invention.
FIG. 7 is a schematic view of the shear strain history of the rubber material in the crown during rotation of the tire of the present invention.
FIG. 8 is a graph of LE13 shear strain distribution in the crown of the inventive load simulation result tire.
Fig. 9 is a view showing the distribution of LE13 shear strain in the crown of the tire in the first embodiment.
Fig. 10 is a view showing the distribution of LE13 shear strain in the crown of the tire in the second embodiment.
In the figure: 1. crown LE13 positive concentration area; 2. crown LE13 negative concentration area; 3. a grounding region I; 4. a ground center; 5. a ground area II; 6. maximum value of shearing strain of the tire longitudinal section LE 13; 7. minimum shear strain of the tire longitudinal section LE 13.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
As shown in fig. 1, the embodiment provides a simulation evaluation method for delamination damage performance in a crown of a truck meridian tire, which can determine a mechanical principle of delamination damage in the crown of the truck meridian tire, and determine simulation evaluation indexes and evaluation methods, and can effectively and optimally select a design scheme, thereby providing technical support for improving the durability of the crown of the truck meridian tire, and the method comprises the following steps:
taking 18.00R25-specification truck radial tires as an example, two-dimensional drawing software (such as a prospective CAD) is used to draw a material distribution diagram, as shown in fig. 2. The figure contains the boundary line of each rubber material and the boundary line of the framework material of the tire.
Finite element meshing is performed on the drawn material distribution diagram by using meshing software (for example Hypermesh), as shown in fig. 3, so as to generate a two-dimensional axisymmetric finite element model of the tire of the embodiment. The triangle unit type of the rubber material in the finite element model is CGAX3H, the quadrilateral unit type of the rubber material is CGAX4H, and the tire skeleton unit type in the finite element model is SFMGAX1. The rubber material is endowed with the properties of the Yeoh model super-elastic material, and the framework component is endowed with the properties of the linear elastic model material.
And assembling the completed two-dimensional axisymmetric finite element model of the radial truck tire into an analytic rigid body axisymmetric model rim, applying uniform pressure of 1.25Mpa to the surface of the inner liner by referring to the inflation pressure of the tire in actual use, and submitting and completing the inflation simulation calculation of the two-dimensional axisymmetric tire model.
Generating 130 parts of tire three-dimensional finite element grid models in the circumferential direction from a two-dimensional axisymmetric tire simulation model by using Symmetric Model Generation technology of ABAQUS simulation analysis software; wherein 50 three-dimensional grids are generated in the range of 50 degrees of the circumferential grounding nearby area of the tire model, and 80 three-dimensional grids are generated in the other 310-degree areas in the circumferential direction; the two-dimensional axisymmetric simulation analysis results were transferred to the tire three-dimensional finite element mesh model by the Symmetric Results Transfer technique of ABAQUS simulation analysis software, as shown in fig. 4.
And applying 15 tons of loading force in the radial direction which is equal to the actual load to the tire three-dimensional finite element grid model, submitting simulation calculation, and deforming the tire two-dimensional axisymmetric finite element grid model after the calculation is completed after the tire two-dimensional axisymmetric finite element grid model is loaded as shown in figure 5.
The results file of the simulation calculation completed is opened, and only the rubber materials outside the belt skeleton material, such as tread and base rubber, are explicit. The explicit mode is selected as a field variable LE13 strain cloud, as in fig. 6, comprising a crown LE13 positive concentration area 1 and a crown LE13 negative concentration area 2.
Explicit tire longitudinal section cell, cell shape where LE13 shear strain amplitude is the difference between the maximum and minimum values of shear strain is observed as in fig. 7. When the position unit enters the grounding area I3, the LE13 has the maximum shearing strain value, and the shape of the shearing action unit is changed from rectangular to parallelogram with the upper left corner being an acute angle. The angle change radian value of the rubber material is the LE13 evaluation index. The position unit is deformed into a rectangle from a parallelogram with an acute upper left corner when entering the grounding center 4; upon entering the ground region ii 5, the rectangular shape changes into a diamond shape with an obtuse upper left corner. In the rolling process of the tire, the rubber material in the crown position repeatedly generates shearing deformation due to shearing action, and is a mechanical cause of delamination damage in the crown of the load-bearing meridian wheel.
And determining the evaluation index of delamination damage performance in the tire crown as LE13 amplitude according to the unit deformation analysis. The tire was split longitudinally by XZ face, and only a Y-axis single-side partial tire three-dimensional model was shown in fig. 8. Wherein the maximum value of LE13 positive value is 0.35 rad, the maximum value of LE13 negative value is-0.35 rad, and the shear strain amplitude in the crown is the difference between the maximum value and the minimum value of the shear strain LE13, as shown in FIG. 9. The example 18.00R25 gauge heavy duty radial tire has a crown delamination damage evaluation index LE13 amplitude=0.35- (-0.35) =0.7 rad under 15 ton load with 1250Kpa inflation pressure.
Step one to step eight are repeated for a heavy duty radial tire of the same gauge 18.00R25, and the tire crown in the second version is obtained with the amplitude of the rubber material LE13 = 0.42- (-0.42) = 0.84 rad, as shown in fig. 10. The durability in the second crown is inferior to the first one, which is the preferred design.
Example 2
The first and second embodiments and the related drawings are not limited to the product form and style of the present invention on the basis of example 1, but are explained herein in other detail.
For example, the material model of the rubber material and the carcass part used may be a constitutive model arbitrarily characterizing the mechanical behaviour of the rubber and carcass materials.
For example, the circumferential layout of the three-dimensional grid may be any form of partitioning scheme. The tire model in the embodiment is not limited to 18.00R25, and may be any heavy duty radial tire that is subjected to high air pressure and high load conditions. Any suitable changes or modifications to the invention will be apparent to those skilled in the art without departing from the scope of the invention.
In summary, the invention discloses a simulation evaluation method for delamination damage performance in a crown of a load-bearing radial tire, which aims to evaluate the delamination damage performance in crowns of multiple designs, and the design scheme is optimized, so that premature damage failure of the load-bearing radial tire due to delamination in the crown is avoided in an initial research and development stage. According to the invention, through mechanical analysis, the evaluation index of the shearing strain amplitude of the rubber material LE13 at the outer side of the tire belt layer as the delamination performance in the tire crown is determined, and the evaluation method is verified to be accurate and effective. The technical scheme provided by the invention is used for rapidly optimizing the structural design of the tire, and provides effective technical support for prolonging the service life of the tire product and improving the research and development success rate of the tire product.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A simulation evaluation method for delamination damage performance in a truck meridian wheel crown is characterized by comprising the following steps:
s1, performing simulation analysis and calculation on static loading of a tire: static loading simulation calculation is carried out to obtain a three-dimensional geometric shape of the tire;
s2, determining delamination simulation indexes in the crown: the rubber material in the crown position repeatedly generates shear deformation due to the shearing action, which is a mechanical cause of delamination damage in the tire crown, so that the LE13 shear strain amplitude of the rubber material adjacent to the outermost belt layer in the center of the crown is used as an evaluation index for influencing the delamination damage performance in the tire crown; the determination of the delamination simulation index in the crown comprises the following steps:
s21, opening a result file of simulation calculation completion, only displaying rubber materials on the outer side of the belt framework material, and selecting a display mode as a field variable LE13 strain cloud picture; in the LE13 strain cloud picture, the strain cloud picture is divided into a crown LE13 positive value concentrated area (1) and a crown LE13 negative value concentrated area (2);
s22, displaying a tire longitudinal section unit, and observing the shape that the LE13 shear strain amplitude is the maximum value and the minimum value of the shear strain;
s23, enabling the rubber material to enter a grounding area I (3), wherein the LE13 has a maximum shearing strain value, and changing the shape of the rubber material from rectangular to parallelogram with an acute upper left corner due to shearing action, wherein the angle change radian value of the rubber material is the LE13 shearing strain amplitude; when the rubber material enters the grounding center (4), the rubber material is deformed into a rectangle from a parallelogram with an acute upper left corner; the rectangular shape changes into a diamond shape with an obtuse angle at the upper left corner when the grounding area II (5) is grounded;
s3, calculating a simulation index shear strain amplitude: LE13 shear strain amplitude is the difference between the maximum and minimum values of shear strain;
s4, comparing the multi-scheme simulation evaluation indexes: and (3) carrying out multi-scheme tire static loading simulation calculation, wherein a scheme with the minimum shearing strain amplitude at the central position LE13 of the crown is a preferable scheme.
2. A method for simulated evaluation of delamination damage performance in truck meridian tire crown as claimed in claim 1, wherein in said step S1, the tire static loading simulation analysis calculation comprises the following steps:
s11, drawing a material distribution diagram by adopting two-dimensional drawing software, wherein the material distribution diagram comprises a boundary line of each rubber material of the tire and a boundary line of a framework material;
s12, carrying out finite element mesh division on a material distribution diagram by using mesh division software to generate a tire two-dimensional axisymmetric finite element model;
s13, assembling the two-dimensional axisymmetric finite element model into a rim of the analytic rigid body axisymmetric model, applying uniform pressure to the surface of the inner liner by referring to the inflation pressure in actual use of the tire, and submitting and completing inflation simulation calculation of the two-dimensional axisymmetric finite element model;
s14, generating a tire three-dimensional finite element grid model in the circumferential direction from the two-dimensional axisymmetric finite element model through Symmetric Model Generation technology of ABAQUS simulation analysis software;
transmitting the two-dimensional axisymmetric simulation analysis result to a tire three-dimensional finite element grid model through Symmetric Results Transfer technology of ABAQUS simulation analysis software;
s15, applying a loading force in the radial direction equal to the actual load to the tire three-dimensional finite element grid model, submitting simulation calculation, and deforming the tire three-dimensional finite element grid model after the calculation is completed.
3. A method for simulated evaluation of delamination damage performance in truck meridian tire crown as claimed in claim 2, wherein in said step S12, the cell type and material properties of the tire two-dimensional axisymmetric finite element model are defined as follows:
the triangle unit type of the rubber material is CGAX3H;
the quadrilateral unit type of the rubber material is CGAX4H;
the tire framework material unit type is SFMGAX1;
giving the rubber material a Yeoh model super-elastic material attribute;
the wire elastic model material properties are imparted to the skeletal member.
4. A method for simulating and evaluating delamination and damage performance in truck meridian tire crown as claimed in claim 3, wherein in the step S14, the method for generating the tire three-dimensional finite element mesh model along the circumferential direction is as follows:
generating a three-dimensional grid within a range of 50 degrees of the circumferential grounding area;
the three-dimensional grid is formed by symbiotic within 310 DEG of other areas in the circumferential direction.
5. The method for simulated evaluation of delamination and damage performance in truck meridian tire crown as claimed in claim 1, wherein in said step S3, the calculation of simulated index shear strain amplitude comprises the following steps:
the tire is longitudinally split through XZ, and only a three-dimensional model of the tire with a single side part on the Y axis is displayed and is divided into a maximum value (6) of the shearing strain of the tire longitudinal section LE13 and a minimum value (7) of the shearing strain of the tire longitudinal section LE 13;
the LE13 shear strain amplitude is the difference between the maximum and minimum values of the shear strain LE 13.
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| CN110978893A (en) * | 2019-12-19 | 2020-04-10 | 安徽佳通乘用子午线轮胎有限公司 | All-steel load-carrying radial tire structure |
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| CN114707374A (en) * | 2022-03-14 | 2022-07-05 | 中策橡胶集团股份有限公司 | Method, application and program product for calculating influence of rubber material modulus on tire rolling resistance |
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2023
- 2023-06-25 CN CN202310744568.3A patent/CN116502507B/en active Active
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| CN110978893A (en) * | 2019-12-19 | 2020-04-10 | 安徽佳通乘用子午线轮胎有限公司 | All-steel load-carrying radial tire structure |
| CN112440626A (en) * | 2020-12-04 | 2021-03-05 | 安徽佳通乘用子午线轮胎有限公司 | All-steel radial tire |
| CN114218838A (en) * | 2021-12-27 | 2022-03-22 | 中策橡胶集团股份有限公司 | Method, equipment and computer program product for testing pretension of tire cap belt layer of tire |
| CN114692297A (en) * | 2022-03-14 | 2022-07-01 | 中策橡胶集团股份有限公司 | Method for analyzing influence degree of rubber matrix on tire rolling resistance, application and program product |
| CN114707374A (en) * | 2022-03-14 | 2022-07-05 | 中策橡胶集团股份有限公司 | Method, application and program product for calculating influence of rubber material modulus on tire rolling resistance |
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