摘要
根据单元变形曲线的固有频率约束条件,建议一种生成单元质量矩阵的新方法。由此导出的新单元用于动力分析,可以明显地改善数值计算精度。
According to natural freguency's constraint condition of deformationcurve of element, this paper presented the new method which is used to formthe mass matrix of element.The element put forward in this paper can be applied to thedynamic analysis. And it will abviously improve the accuracy of numerical calcul-ation.
关键词
杆系结构
质量矩阵
有限元法
finite element
mass matrix
freguency constraint
