框架类机载设备支架的结构设计与试验研究  

Structural Design and Experimental Research of Airborne Equipment Framework

作　　者：郭磊 刘检华[1] 邢立华[2] 袁倩[2] 夏焕雄 GUO Lei;LIU Jian-hua;XING Li-hua;YUAN Qian;XIA Huan-xiong(School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;Beijing Institute of Aerospace Control Devices, Beijing 100854, China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京航天控制仪器研究所,北京100854

出　　处：《北京理工大学学报》2020年第11期1190-1194,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51675050)。

摘　　要：为解决满足高强度与轻量化要求的复杂框架类设备支架仿真模型不够精确的难题,通过在有限元分析设计的基础上,利用静力加载试验方法找出结构强度的薄弱环节,再建立结构力学模型进行失效机理分析,提出改进方案.静力试验结果表明:新的设备支架未发生明显塑性变形,局部设计改进有效,满足了航空极限过载要求;仿真、试验与理论模型相结合的设计方法可实现以较少材料增量的方式提高产品强度,为框架类支架设计改进提供有效的方案.In order to improve the accuracy of simulation model of complex framework-type equipment support and meet the requirements of high strength and light weight,a static loading test was performed to discover the weak links on the basis of finite element analysis.Then,a structural mechanics model was established to obtain the failure mechanism and an improvement scheme was proposed.Finally,the failure mechanism was obtained to improve the local design.The static loading test results show that the improved equipment support has no obvious plastic deformation and the local design improvement is effective,meeting the requirements of aviation limit overload.Therefore,the design method,combining simulation,experiment and theoretical model,can improve the product strength with little material increment,which can provide an effective way to improve the design of framework-type equipment supports.

关 键 词：机载 设备支架 强度 轻量化 静力试验 

分 类 号：V240.2[航空宇航科学与技术—飞行器设计]