曲梁位移场函数的单元刚度矩阵和一致质量矩阵

Cell Rigidity Matrix and Consistent Mass Matrix of Curved Beam Displacement Field Function

以多项式作位移场的曲梁有限元单元模型因薄膜力闭锁和剪力闭锁而存有误差。基于满足边界约束条件的曲梁位移场函数的单元刚度矩阵和一致质量矩阵,经自编程序与某商业大型计算软件验证,其精度良好,对实际工程有一定的指导和借鉴意义。

Curved beam finite element model with muhinomial as displacement has error because of membrane force locking and shear force locking. The validation of self-organizing program and one largescale commercial software proves that the cell rigidity matrix and consistent mass matrix of curved beam displacement satisfying border constraint condition have excellent accuracy, and it servers as the reference for practical engineering.