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航天器挠性梁伸展动力学特性数值分析
引用本文:程绪铎,王照林,李俊峰.航天器挠性梁伸展动力学特性数值分析[J].固体力学学报,2001,22(1):104-110.
作者姓名:程绪铎  王照林  李俊峰
作者单位:1. 安庆师范学院物理系,安庆,246011
2. 清华大学工程力学系,北京 ,100084
基金项目:国家自然科学基金!( 1970 2 0 11),安徽省高校自然科学基金!( 2 0 0 0j1153),安徽省自然科学基金重点项目!( 0 0 0 2 10 89)
摘    要:利用动量矩定理推导出滞挠性伸展梁航天器的姿态动力学方程,推导了梁质量微元的动力学方程,在梁等速伸展的情况下对动力学方程进行变换,通过Runge-Kutta积分法得出了数值解,结果表明:梁等速伸展时,其振动的振幅随其长度的增长而增大;随航天器初始姿态角速率的增大而增大;随伸展速率的增大而减小,航天器姿态角速率随梁伸展长度的增长而减小。

关 键 词:航天器  挠性梁  伸展动力学  数值分析
修稿时间:1999年6月28日

NUMERICAL ANALYSIS OF DEPLOYMENT DYNAMICS OF FLEXIBLE BEAM OF A SPACECRAFT
Cheng Xuduo.NUMERICAL ANALYSIS OF DEPLOYMENT DYNAMICS OF FLEXIBLE BEAM OF A SPACECRAFT[J].Acta Mechnica Solida Sinica,2001,22(1):104-110.
Authors:Cheng Xuduo
Abstract:The attitude dynamic equations of a spacecraft with deploying flexible beam are obtained by using the momentum theorem. The dynamic equations of beam are also established. Based on the dynamic equation, and by using Runge Kutta method, the numerical results of flexible beam with uniform velocity deployment are obtained. The results show that the amplitudes of vibration increase as the length of beam increases, or as the attitude initial angular velocity increass. The results also show that as the velocity of deployment increases, the amplitudes of vibration decrease.
Keywords:spacecraft  flexible beam  deployment dynamics
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