Based on the updated Lagrangian description, the incremental equilibrium equations of triangular plate shell elements for geometrically nonlinear problem are derived.
基于修正的拉格朗日描述，系统推导了三角形平面壳单元用于几何非线性问题分析时的增量平衡方程。
2
In order to reduce the intractable shear locking effect, a macro triangular partition shell element is formed with three individual sub-triangular domains.