摘要
从虚位移原理出发,推导了两结点三维圆管直梁单元几何非线性的单元切线刚度矩阵的解析解,为这种单元大变形、小应变分析提供了刚度矩阵的表达式。
From the principle of virtual displacement,an analytical solution of the tangential stiffness matrices with nonlinear effects geometrically,for two nodal three-dimensional circular pipe-beam elements,has been derived. And a set of stiffness matrices expressions are provided for the analysis of this kind of elements under large deformations but small strains.
出处
《甘肃工业大学学报》
1993年第4期89-94,共6页
Journal of Gansu University of Technology
关键词
圆管直梁
刚度矩阵
采油井
设备
circular beam elements, geometrically nonlinear, tangential stiffness matrix, finite element method
