Study On Mesh Generation Method For Radial Tire

The tire is one of the important components of the vehicle,which has a very important influence on the comfort and safety of the vehicle.Its main functions are to support the weight of the vehicle,transmit the driving power of the vehicle,and cushion the vibration.Radial tires have been widely used in the field of vehicles and aeroplanes by virtue of their long life,good shock absorption performance and large bearing capacity.With the rapid development and popularization of computer and software technology,finite element analysis,as an efficient and effective numerical simulation method,has been widely used in almost all scientific fields,including materials,machinery,and energy.In the process of finite element simulation of radial tires,meshing is a very important step.Radial tires are composed of different materials,so the cross-section consists of different areas,and the shape is extremely complicated.When the grid is generated automatically,the quality of the grid is poor.In order to get better grid,the grid is always generated by manual operation.Manual operation not only takes a lot of time and energy to complete,which affects the progress of the entire finite element simulation work,but also the process is complicated,and it is easy to produce various errors and affect the accuracy of the finite element simulation.Therefore,there is an urgent need for exploring an automated method that can mesh the cross section of the radial tire,which has a geometric shape with a complex material distribution,to improve the efficiency and accuracy of the finite element simulation.This paper first introduces the development and types of mesh generation technology,and then reviews the existing meshing methods for radial tire cross-section meshes.According to the comprehensive comparison and analysis,it is determined that the traditional paving method should be improved to make it suitable for the automatic generation of the mesh of the radial tire.In this paper,an automatic decomposition algorithm of the composite structure region is proposed based on the characteristic that the cross section of radial tire possess composite structure,which can decompose the radial tire cross-section into individual sub-regions according to the material distribution.According to the characteristic that the material distribution of radial tire cross-section is basically layered,special improvements are made on the basis of the traditional paving method,and an improved paving method is proposed to make it suitable for the meshing of the layered composite structure area.Since the traditional paving method first discretizes the boundary and then generates meshes,the method is no longer applicable to this layered composite structure.The new paving method first automatically divides the layered composite structure into sub-regions,and then generates nodes while generating elements in each sub-region.In this process,the nodes and elements are continuously adjusted according to the distribution characteristics of the material.Finally,all the sub-region meshes are combined to obtain the final mesh.This algorithm can automatically generate regular high-quality,high-reliability triangle and quadrilateral mesh in the layered composite structure area.Aiming at the characteristic that the radial tire is a slewing body,this paper proposes a method of converting the 2D mesh into the 3D mesh by rotating.3D mesh with high regularity and good quality can be generated by this method,resulting in reducing the complexity of 3D mesh generation,and improve the generation efficiency.According to the above method proposed in this paper,the programs for automatically decomposing the composite structure area,generating mesh in the layered composite area and 3D mesh in the revolving body are developed.Corresponding 2D mesh and 3D mesh are generated in the radial tire by the programs,and the quality of the generated mesh meets the requirements of actual analysis.This paper proposes and studies the high-quality and high-efficiency mesh generation algorithm and developed program for the radial layered complex structure of the radial tire,which has important theoretical and practical significance to promote the accuracy of the numerical simulation analysis in the application of the radial tire and other composite materials.