上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2012年
3期
42-48
,共7页
卫星%隔振器%动力学仿真%系统响应
衛星%隔振器%動力學倣真%繫統響應
위성%격진기%동역학방진%계통향응
Satellite%Vibration isolator%Dynamic simulation%System response
为改善发射过程中卫星的动力学环境以保证卫星及其精密仪器的正常工作,设计了一种由限位弹性-阻尼元件构建的新型隔振器。用MSC.Marc非线性分析软件建模,由动力学仿真模拟分析简谐、随机激励下的系统响应。结果表明:加装隔振元件后,隔振系统的振动位移振幅、位移传递率和加速度传递率较原始系统大幅降低。
為改善髮射過程中衛星的動力學環境以保證衛星及其精密儀器的正常工作,設計瞭一種由限位彈性-阻尼元件構建的新型隔振器。用MSC.Marc非線性分析軟件建模,由動力學倣真模擬分析簡諧、隨機激勵下的繫統響應。結果錶明:加裝隔振元件後,隔振繫統的振動位移振幅、位移傳遞率和加速度傳遞率較原始繫統大幅降低。
위개선발사과정중위성적동역학배경이보증위성급기정밀의기적정상공작,설계료일충유한위탄성-조니원건구건적신형격진기。용MSC.Marc비선성분석연건건모,유동역학방진모의분석간해、수궤격려하적계통향응。결과표명:가장격진원건후,격진계통적진동위이진폭、위이전체솔화가속도전체솔교원시계통대폭강저。
A new vibration isolator which was constructed by elastic damping element with displacement restriction was designed for improving the dynamic environment of the satellite during the launching to ensure the normal working of the precision instruments on board in this paper. The model was established by MSC. Marc software. The system response under the briefness and random stimulation was studied through the dynamic simulation. The results showed that the displacement swing, displacement transfer ratio and acceleration transfer ratio of the system within the vibration isolator were decreased greatly than the original system.