【摘要】 <正> 本文指出弹性动力学问题的守恒型差分格式仅仅是一种带积分近似的有限元。该格式相联缀的节点数较少,在规则网格内点上同于有限差分格式。其次,本文提出一种新的应力计算公式,在相同部分网格情况下,其精度高于有限元,而且应力解在小区域上满足运动方程。更多还原

【Abstract】 In this paper, we present that the conservation scheme of elasto-dynamic is just a kind of finite element method with integral approximation. On regular mesh’s internal points it is the same as difference method. In addition, a new computing art of stress is used. With the same mesh conditions, the stress solution not only satisfies the dynamic equations of motion in a small area, but its precision is also higher than that by finite element method.更多还原