将此类结构离散为三角形平板元素和梁元素的集合体。
The discrete elements used are triangular plate elements and beam elements.
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 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.
平板结构，可包装椭圆形、方形、三角形等任意形状物品。
Fla-plate structure, any shape of the product can be packed, such as ellipse, triangle etc.
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