双层储液罐的动力稳定分析
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摘要
对双层圆柱形储液罐动力稳定性进行了分析.使用有限元法和解析法相结合的方法,考虑阻尼产生的几何刚度矩阵,在竖向载荷下,求解动力稳定性问题.由于考虑阻尼产生的几何刚度矩阵,当结构自由度数目较大时,直接求解方程是困难的.使用二次摄动法使求解得到简化。
An analysis is conducted on the dynamic stability of two-layer cylindrical liquid storage tankers. By combining finite element method with analgtics, with the geometric stiffness matrix produced by damping taken into account, the analysis is made to solvedynamic stability under vertical load. As is difficult to solve the equation when freedom of structure is big, quadratic pertarbation method is applied to simplify the solution.
引文
1曲乃泗等.贮罐结构水弹性抗震分析.大连工学院学报,1979,(3):97~105
    2曲乃泗.任意空间杆系结构的动力稳定分析.工业建筑,1990,(5):24~28
    3王翎羽等.储罐在地震作用下的象足失稳.天津大学学报, 1992,(4): 78~ 85

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