【摘要】 首次对车辆地面力学中常用的等向强化屈服准则进行了总结，建立了便于数值分析的弹塑性本构模型的统一表述，推导了适合数值分析的车辆地面力学中常用等向强化屈服准则相对应的屈服函数、等效屈服应力及参数，为用数值模拟方法研究车辆行走机构与地面相互作用奠定了基础。更多还原

【Abstract】 The paper first summarizes the often used isotropic hardening yield criteria in vehicle terramechanics.The convenient expressions for numerical analysis of the elastic plastic constitutional model are set up and the yield function,equivalent yield stress and constants for computing plastic flow vector of the often used isotropic hardening yield criteria in vehicle terramechanics are derived to use them in numerical analysis.The result lays foundations for studying the interaction between vehicle walking gear and terrain.更多还原