环型桁架卫星天线的非线性动力学分析  

ANALYSIS ON NONLINEAR DYNAMICS OF CIRCULAR ANTENNA

作　　者：侯飞[1,2] 张伟[2] 

机构地区：[1]山西大同大学煤炭工程学院,大同037009 [2]北京工业大学机电学院机械结构非线性振动与强度北京市重点实验室,北京100124

出　　处：《动力学与控制学报》2016年第2期138-142,共5页Journal of Dynamics and Control

基　　金：国家自然基金资助项目(11290152;11272016);山西大同大学校青年科学研究项目(20080827)~~

摘　　要：我国航天工业迫切需要掌握可入轨后展开的大型网架式空间结构技术,而环形桁架可展天线具有应用空间大、结构形式简明的特点,是目前大型卫星天线较为理想的结构形式^([1-3]).本文基于Zhang et al建立的环形天线模型为研究对象并在此基础上建立了天线振动时的非线性常微分运动方程,运用matlab数值模拟方法研究了热激励对系统非线性动力学行为的影响.The increasing demand for advanced and large-aperture space antennas has promoted the remarkable development of the aerospace industry. The circular Antennas could be as small as possible during transportation,while it should be as large as needed for effective operation when the antenna is fully deployed on the orbit.Based on the earlier results,a equivalent circular cylindrical shell model is proposed to represent the circular continuum antenna,and the nonlinear governing equations of motion are derived for the equivalent circular cylindrical shell system under thermal excitation. By means of numerical simulations in MATLAB programme,the influence of thermal excitation on the dynamical behaviors for the nonlinear system is investigated.

关 键 词：环型桁架 非线性动力学 混沌运动 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程] V443.4