本文推导了材料为理想弹塑性的空间梁单元弹塑性刚度矩阵的显式形式。
An explicit expression of stiffness matrix for a 3-dimensional beam made of elastic-plastic material is derived in the paper.
可基于截面刚度矩阵以及现有的位移模式推导出弹塑性阶段的单元刚度矩阵。
According to section stiffness matrix and available displacement mode, element stiffness matrix of elastoplastic stage was derived in this paper.
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