机械展开式超音速气动减速器模态分析  

Analysis on Natural Vibration Characteristics of Deployable Aerodynamic Deceleration Device

作　　者：史明东 原梅妮[1] 侯秀成[1] 张佳庆 陈贺贺[1] 何小晶 SHI Mingdong;YUAN Meini;HOU Xiucehng;ZHANG Jiaqing;CHEN Hehe;HE Xiaojing(College of Meehatronie Engineering, North University of China, Taiyuan 030051, China;Jinxi Industry Group Co. , Ltd. , Taiyuan 030027, China)

机构地区：[1]中北大学机电工程学院,太原030051 [2]晋西工业集团有限责任公司,太原030027

出　　处：《兵器装备工程学报》2018年第4期143-146,共4页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金资助项目(51201155);教育部博士点基金项目(20101420120006)

摘　　要：根据展开式超音速气动减速器的结构设计方案,建立了三维几何模型;利用有限元软件ANSYS对气动减速器的模态特性进行了有限元分析,得到了结构的前6阶固有频率和振型,分析了固有频率的变化规律及振型特点;结果表明:减速器的固有频率设计合理,结构设计方案可有效地避免共振,该分析方法为展开式气动减速器的动力学研究与结构的优化设计提供了理论参考。According to the structure features deployable aerodynamic deceleration device,geometry model of deceleration device is established. On this basis,a finite element model of truss structure is established by applying ANSYS software. The modal analysis of deceleration device was carried by using ANSYS finite element code,and the first six orders of natural frequencies and corresponding vibration modes of structure are obtained,then the changes of natural frequencies and the features of vibration modes are analyzed. The results show that the natural vibration characteristics meet the dynamic conditions,as well as effectively avoiding the resonance. The analysis method can be taken as the theory reference for the research on the dynamics and optimization design of truss structure.

关 键 词：机械可展开式气动超音速减速器 有限元法 模态分析 固有频率 

分 类 号：TH128[机械工程—机械设计及理论] V423.9[航空宇航科学与技术—飞行器设计]