摘要
引入非线性变形场描述，建立了基于小变形的柔性多体系统动力学模型，解决了传统动力学建模方法存在的对变形广义坐标过早线性化的缺陷．对旋转梁式构件进行了动力学仿真，仿真结果表明传统方法不适合用于高速旋转的柔性体动力学建模．
The general equations of fiexible multibody systems have been developed by using a nonlinear deformation field and small deformation assumption,which can solve the defaults of premature linearization to the deformation variables of dynamic equations in traditional methods.Dynamic simulation of a rotating beam has been done,and simulation results show that the traditional methods can not be used for dynamic modeling of flexible systems under high rotating speeds.Therefore,dynamic modeling method presented in this paper can provide a reliable method for dynamic analysis of various complex structures in actual space engineering.
出处
《河北工业大学学报》
CAS
1999年第1期1-5,共5页
Journal of Hebei University of Technology
基金
中国航天总公司博士后科学基金
河北省教委博士启动资金
国家航天863高技术项目
关键词
柔性多体系统
小变形
多体系统
动力学模型
航天
Flexible multibody system, Consistence lineatization, dynamic equation,Rigdflexible coupling Dynamics
