舰船设备抗冲击时域模拟研究

简述了舰船设备抗冲击计算分析的发展历程,详细地论述了舰船设备抗冲击有限元计算分析时各种非线性因素(接触面间隙效应、油膜刚度、减振抗冲元件)的模拟方法、冲击输入及其时域转换方法.作为计算实例,以某舰船主汽轮机组为计算模型,系统而全面地模拟各种非线性因素,并分别从垂向和横向两个方向对其进行冲击加载.整个计算实例诠释了舰船设备抗冲击时域模拟的实施过程.计算结果表明,主汽轮机组的动态响应特性与冲击载荷的加载方向、载荷的峰值和脉宽特性有很大关系,同时还发现了该主汽轮机组抗冲击的薄弱环节和危险区域.

Anti-shock Simulation of Equipments on Board in Time-domain

The development of the anti-shock analysis on warship equipments has been simply introduced,and the basic theory,nonlinear factors(including the space effect,oil stiffness,and anti-shock unit),shock input and the transfer method to time-domain are studied in this paper.As a calculate example,a turboset of a warship which subject to the shock loadings from two direction,the nonlinear factors are considered completely.The simulate procedure of time-domain is showed clearly in this example,the consequence show...