...拉伸问题,基于节点的平衡关系式(2-21),将它写成矩阵形式e e e =K q F (2-22)其中叫做单元刚度矩阵(stiffness matrix of element),即eK1 11 1e eeeE Al = K (2-23)UNIT2-5TH-FEA (理论部分-UNIT2) 清华大学曾攀eF 叫做节点力列阵(nodal force vector), 叫做节点...
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Method for computing the element restoring force, rather than the stiffness matrix, is the most important factor that determines the accuracy of a geometric nonlinear finite element problem.
几何非线性单元的精度主要决定于单元恢复力的计算方法，刚度矩阵对单元精度的影响很小。
A stiffness matrix of simple rectangular plate bending element with 12 parameters expressed in explicit form is derived.
推导了以显式表示的12个自由度的简单矩形板弯曲元素刚度矩阵。
The precise tangent stiffness matrix of space cable element is derived in this paper by using equilibrium equation.
本文采用状态平衡方程推导出用超越函数表示的空间索单元切线刚度矩阵的精确表达式。
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