Dynamic Buckling of Cylindrical Shells under Axial Impact in Hamiltonian System
In this paper, the dynamic buckling of elastic cylindrical shells, which are impacted by axial step loads on one end, is theoretical analyzed in Hamiltonian system. A approach is employed to convert fundamental control equations into Hamiltonian canonical equations, which is shown in dual variables. In the system, critical loads and buckling modes are reduced to a problem of symplectic eigenvalues and eigensolutions. The primary factors, including impact time, boundary conditions, thickness and inertia force, etc，that affect critical loads and the corresponding buckling modes are investigated in detail. It is shown that buckling waveforms can be divided into two sorts according to different solving domains. The minimum critical loads belonging to different sorts have also an obvious discrepancy. The results give analytically and numerically some new rules of buckling problem, which is useful in designing structures of shells.
轴向影响 动态屈曲 弹性圆柱壳 应力波 哈密顿系统
SUN Jia-Bin XU Xin-Sheng LIM C.W
State Key Laboratory of Structure Analysis of Industrial Equipment and Department of Engineering Mec Department of Building and Construction, City University of Hong Kong, Hong Kong
国内会议
太原
英文
1-18
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）