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采用ANSYS/LS-DYNA软件对SUS 304奥氏体不锈钢薄板的摩擦耦合变形过程进行了数值模拟.采用隐式-显式序列求解法和分段线性塑性材料模型,分析了钢带摩擦耦合变形时的应力分布规律及载荷、下压量和滑动速度等因素对钢带剪应力、主应力及等效应力的影响.结果表明:摩擦耦合变形的试验参数显著影响钢带的应力分布,验证了钢带在低于其屈服强度的应力条件下发生塑性变形的摩擦诱发效应.对奥氏体不锈钢摩擦诱发马氏体转变行为的研究及其摩擦学性能的改善具有一定的指导意义.
The process of friction coupling deformation of SUS 304 austenitic stainless steel sheet was numerically simulated by ANSYS / LS-DYNA software.The implicit-explicit sequence method and piecewise linear plastic material model were used to analyze the friction coupling deformation The stress distribution and the influence of the load, the amount of downward pressure and the sliding speed on the shear stress, the main stress and the equivalent stress of the steel strip were studied.The results show that the test parameters of the frictional coupling deformation significantly affect the stress distribution of the steel strip, The effect of friction induced by plastic deformation under the stress lower than its yield strength is of guiding significance for the research on the friction-induced martensitic transformation of austenitic stainless steel and the improvement of its tribological properties.