Lagrange element

The structural analysis is based on a quadrilateral flat-shell element and an updated Lagrange (ul) formulation, which can be employed to model geometric nonlinearities arising from large deflections.

结构部分以四边形平板壳元为基础，采用更新的拉格朗日(UL)方法分析结构大变形引起的几何非线性问题。

The Green-Lagrange strain at the critical location determined from the finite element analysis was used for evaluating the fatigue damage parameter of the rubber components.

使用有限元分析测定的关键部位格林-拉格兰奇应变评价橡胶部件的疲劳破坏参数。

The results show that when the Lagrange interpolation is used the efficiency of calculation is elevated significantly. And the calculation converges quickly at low finite element number.

结果表明，使用拉格朗日插值方式能大大提高运算效率，在低有限元个数的情况下很快收敛。