Structural elements contain bar, plane beam, space beam, triangular and rectangular plates with membrane stresses, rectangular plate element with bending deformations.
结构元素包括杆元、平面梁元、空间梁元、平面三角板元、平面矩形板元和弯曲矩形板元等。
Then, based on the CR formulation, the internal force vector and tangent stiffness matrix of large rotation and small strain space bar and plane beam element are deduced.
其次，基于CR列式法推导出了大旋转小应变空间杆单元及平面梁单元的内力矢量及切线刚度矩阵；
Based on the space-bar element, the dynamic analysis of bicycle frames is carried out. and the bump impulse equation derived.
本文利用空间梁单元作自行车构架的动力分析。
应用推荐