【水下爆炸冲击波作用下结构响应和输液圆柱壳稳定性的理论与分析】刘忠族.pdf

THEORIESANDANALYSESONDYNAMICRESPONSES OFSTRUCTURESSUBJECTEDTOUNDERWATER SHOCKWAVESANDSTABILITYOFCYLIND-RICALSHELLCONVEYINGFLUID by Liu Zhongzu Supervised by Prof.Zhong Weifang ADissertation SubmittedtotheDegreesEvaluationCommitteeof HuazhongUniversityofScienceandTechnology fortheDegreeofPh.D.

接着,本文解决了可压缩流体中圆柱壳在水下爆炸冲击波作用下的动力响思想.对于给定的圆柱壳振动波数m、n,首先推导圆柱壳在单个脉冲激励作用下的动力响应,然后将水下爆炸冲击波压力分布函数按时间变量离散为一些间隔很小脉冲激励,在求出单个脉冲激励响应的基础上,将所有脉冲激励的响应叠加,就可获得给定波数时圆柱壳的动力响应.考虑到圆柱壳的动力响应中各种波数的振型都存在,因此,将所有给定波数的响应叠加起来就获得圆柱壳在水下爆炸冲击波作用下的动力响应.

theamplitudeofthecylindricalshellattenuatequickly.Onlyforthefreevibrationthat practice,the viscous damping cant be avoided in the fluid.so the free vibration of the structurewilldisappearedandthestructurewillbesteadyintheend.