基于各向异性超弹本构的轮胎侧偏分析

Tire cornering analysis based on anisotropic hyperelastic constitutive model

为了准确描述帘线-橡胶轮胎侧偏的力学特性,基于单向纤维增强连续介质力学,给出了一种可用于仿真分析轮胎侧偏的帘线-橡胶复合材料各向异性超弹性本构模型。该模型中应变能被解耦为橡胶基体应变能、帘线拉伸应变能和橡胶与帘线之间的角剪切应变能;结合实验数据标定了模型参数,将标定后的各向异性超弹本构模型用于轮胎接地和侧偏分析;为各向异性超弹性复合材料本构模型的开发以及高精度帘线-橡胶轮胎模型研发提供了重要的研究基础。

In order to describe the mechanical properties of cord-rubber tire cornering accurately, based on unidirectional fiber reinforced continuum mechanics, an anisotropic hyperelastic constitutive model of cord-rubber composite is presented, which can be used to simulate and analyze tire cornering. The strain energy is decoupled into the strain energy of rubber matrix, the tensile strain energy of cord and the angular shear strain energy between rubber and cord. The model parameters are calibrated based on the experimental data, and the calibrated anisotropic hyperelastic constitutive model is applied to tire grounding and cornering analysis. It provides an important research basis for the development of anisotropic hyperelastic composites constitutive model and high precision cord-rubber tire model.