| 1. | Therefore it is started with the derivation of variational equation , full formulations including contact boundary conditions , internal forces of shell element are given , and the algorithms for contact - surfaces searching , contact - force computation , and even time integration for the response computation are listed as well 为此,文中从推导变分方程开始,给出了包括接触边界条件、壳单元内力计算在内的全部列式,并列出了识别接触界面的搜索算法,接触力计算以及动力响应计算的时间积分算法的有关公式等等。 |