作　　者： ; ;

机构地区： 浙江大学航空航天学院力学系

出　　处： 《浙江大学学报（自然科学版）》 1991年第5期548-555,共8页

摘　　要： 本文从Hamiltom原理出发,推导了输流管道的运动方程和边界条件,用Galerkin法把问题化为复矩阵的复特征值问题。引入“自由流”模型来描述管外流场。本文还研究了管道中间作用线性弹簧对输流管道动态特性的影响。与前人的实验结果做了比较,结果是令人满意的。 Cantilever shell with circular cross- section containing an incompressible inviscid fluid flow. The equations of motion and boundry conditions are derived by means of Hamilton's variational principle. By using Galerkin's method, the original subject can be reduced to solve a generalized complex eigenvalue problem. The 'free flow model' is introduced to describe the fluid redial displacement of out flow. This paper also deals with the effect on system dynamic behaviour of an inter mediate lateral spring. The results obtained in this paper are closed with experimental results by others.

关 键 词： 输流管道 振动 颤振失稳 壳体模型

领　　域： [理学] [理学]