Analysis And Numerical Simulation Of Tire Based On Different Elastic Modulus Of Tension And Compression

The tire is one of the important components of auto parts,it can reduce the impact of the car when it is driving,which has a great impact on the ride comfort and driving smoothness.The belt layer,as a key forced component of a radial tire,exhibits different deformation states and mechanical properties under tension and compression.In the past,finite element analysis of tires is mostly based on the classical elastic theory,which simplified the nonlinearity of the belt material,and suppose that the elastic modulus of the tension and compression are equal.In this paper,considering the different elastic modulus of tension and compression of belt material,a finite element model of radial tire is established,and the influence of different elastic modulus of tension and compression on the mechanical properties of tire structure is discussed by simulating the inflation and static load conditions of the radial tire.Firstly,considering the material properties of tire cords,using the theory of different elastic modulus of tension and compression,the constitutive equation is transformed from the principal stress coordinate system to the ordinary rectangular coordinate system.On this basis,by building a UPFs compilation platform and writing a material subroutine Usermat,the secondary development of Ansys software is implement to solve the problem of different tension and compression modulus.Setting the tensile elastic modulus and compressive elastic modulus of the belt material according to the reference,a simplified tire model is built in Ansys by considering the different elastic modulus of tension and compression.The force situations of the whole tire are analyzed,and the influence of different elastic modulus on the overall mechanical properties of the tire model is also diicused.Then,the 12R22.5 S606 all-steel tubeless radial tire is analyzed to determine the design parameters of the tire,and the inflation tests,static load and pressure blanket experiments are carry out.Finally,a three-dimensional finite element model of the12R22.5 S606 all-steel tubeless radial tire with different elastic modulus of tension and compression is established in Ansys,and the accuracy of the tire model is verified by comparing with experimental values.Based on the proposed finite element model,the inflation conditions and static load conditions of radial tires are simulated.The results show that the different mechanical properties of the tire structural belt material in tension and compression have a certain impact on the structural mechanics distribution of the tire.The research method in this article has certain reference value for accurate force state simulation and design optimization of the tire.