一种内压膨胀系统的动态响应分析  

DYNAMIC RESPONSE ANALYSIS ON AN INTERNAL PRESSURE EXPANSION SYSTEM

作　　者：杨琳[1,2] 刘桂祥[1,2] 赵高煜[1,2] 

机构地区：[1]华中科技大学土木工程与力学学院力学系,武汉430074 [2]工程结构分析与安全评定湖北省重点实验室,武汉430074

出　　处：《固体力学学报》2013年第3期279-285,共7页Chinese Journal of Solid Mechanics

摘　　要：论文采用LS-DYNA非线性动力学有限元程序,对一种曲边柱壳-多体内压膨胀系统在均布内压作用下的动态膨胀过程进行了数值分析,获得了曲边柱壳动态响应规律.文中分析了各种因素对曲边柱壳的变形模式及其应力、应变变化规律的影响;模拟了曲边柱壳在内部压力和外围变形体共同作用下的耦合变形运动过程.模拟计算结果与试验现象基本一致.In this paper, we study the nonlinear dynamic responses of an expansion system consisting of a curved cylindrical shell and multi- deformable bodies under uniform internal pressure. Numerical anal- ysis was conducted using general commercial software LS-DYNA and many effects on the variation of the stress,strain and deformation mode of the curved cylindrical shell were investigated. Our simulation re- suits,including the deformation of the curved cylindrical shell and the movement of the deformable bodies outside the shell during the expansion process agree well with the corresponding experimental results.

关 键 词：曲边柱壳 内压膨胀 数值仿真 

分 类 号：O344.1[理学—固体力学]