冲击作用下薄壁结构动态响应的一种计算方法  

A calculation method on dynamic response of thin wall under shock load

作　　者：王在铎[1] 刘宏[1] 

机构地区：[1]海装天津局驻航天一院军代表室,北京100076

出　　处：《强度与环境》2010年第5期14-20,共7页Structure & Environment Engineering

摘　　要：针对有内部弹性约束的内置式旋成壳体弹性结构系统,按照舱段法构成了其线性动态模型。完成了在冲击载荷作用下结构中出现的过载与内力计算,指出了通过利用隐形离散算子的振动方程,直接积分法有效使用的可能性。This structure is a set of enclosed thin-walled of evolution with elastic internal couplings.Impact caused load factors and internal stresses are analysed numerically for the structure considered.It is shown the possibility of effective using for direct integration schemes based on discrete implicit operators to solve oscillation equations.These schemes describe adequately an influence on equatin solving for higher oscillation modes depending on integration step.An effectiveness of stable and rather implementation-simple Wilson technique is confirmed by means of numerical simulation.The Wilson operator using do not cause essential distortions of amplitude and phase dynamic structural performances.

关 键 词：结构动力学 冲击载荷 舱段法 直接积分法 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程] V415.4