【摘要】 将描述固体材料的应力应变关系与欧拉流体动力学方程组耦合求解,通过引入界面捕捉方法描述多物质界面,将带弹塑性的多材料相互作用问题从形式上转化为计算单一材料问题,采用Roe方法近似求解Riemann问题,给出以Godunov方法为基础的二阶精度欧拉弹塑性流动的数值计算方法,适用于计算大变形流动等问题,并通过数值实验进行验证。更多还原

【Abstract】 The stress-strain relationships for elasto-plastic solid materials and fluid dynamic conservation e-quations, as well as the interface capturing equations, are coupled together to be resolved. By means of the classical Roe method for Riemann problem, a second order Godunov scheme usually suitable for single fluid, is adopted for one dimensional elasto-plastic multi-material flow. Some numerical experiments are presented to verify the method.更多还原