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.
出处
《强度与环境》
2010年第5期14-20,共7页
Structure & Environment Engineering
关键词
结构动力学
冲击载荷
舱段法
直接积分法
structural dynamics
impact loading
cabin method
direct integration method
