For geometrical nonlinearity, Updated Lagrangian formulations are adopted to derive the tangent stiffness matrix.
列式法求解切线刚度矩阵来考虑几何非线性。
Virtual work principle for solid body expressed in Lagrangian coordinate system is solved by dynamic finite element method.
采用动力有限元求解拉氏坐标下固体的虚功原理。
In this paper, the trajectory of particles and material line are calculated with the lagrangian method on an isentropic surface.
用拉格朗日方法计算等熵面上空气质点和物质线的轨迹。
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