双模量隔冲减振器在半正弦波冲击环境下响应的数值分析  

Analysis of vibration and shock isolation system with double-stiffness in half sine wave shock

作　　者：罗忠[1] 陈志坚[1] 吴惠军[2] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033 [2]河南交通职业技术学院,河南郑州450015

出　　处：《爆炸与冲击》2007年第2期179-184,共6页Explosion and Shock Waves

基　　金：国防十一五预研基金项目

摘　　要：将环境对双模量隔冲减振器的冲击分为两个阶段,在半正弦波冲击作用阶段采用双自由度模型进行响应计算,并以终了时刻的位移和速度作为自由振动阶段的初始条件,对自由振动阶段的单自由度模型进行响应计算。分析了某双模量隔冲减振系统在受半正弦波环境冲击下的响应特性,并与线性系统在受该冲击下的性质进行了比较。分析结果表明较易实现的双模量隔冲减振器具有较好的效果。The process of shock acted on a vibration and shock isolation system with double-stiffness was divided into two steps. In the shock action phase of a half sine wave, the response was calculated by using a double DOF model. In the free vibration phase, the response was calculated by adopting a single DOF system, the initial displacement and velocity of single DOF adopt the final value of the first phase. The property of the double-stiffness system in the shock of the half sine wave was analysed by using this method. Some conclusions were gained by being compared with the linear system. Results indicate the preferable effect of vibration and shock.

关 键 词：爆炸力学 隔冲减振 双模量 冲击 非线性 

分 类 号：O322[理学—一般力学与力学基础] O328[理学—力学]