直升机载设备安装架的随机振动分析  

Random Vibration Analysis of Mounting Rack for Helicopter-Borne Equipment

作　　者：梁震涛[1] 徐德好[1] 李玉峰[1] 陈陶菲[1] 

机构地区：[1]南京电子技术研究所,江苏南京210039

出　　处：《电子机械工程》2009年第5期21-24,共4页Electro-Mechanical Engineering

摘　　要：针对设备安装架结构进行了直升机环境的随机振动分析。首先讨论了直升机平台的振动环境特点,利用能量相等的原则将随机加正弦的振动谱转化为纯随机振动。然后利用Pro-E软件构建的三维模型,导入Hypermesh进行几何处理并划分网格,最后使用ANSYS软件进行有限元求解,得到结构在直升机振动环境下的位移应力响应,并对结构的动强度进行了校核。A random vibration analysis of mounting rack for helicopter - borne equipment was done. Firstly, the vibration environment of helicopter was described and the random plus sine vibration is transformed into pure random vibration by equivalent energy principle. Secondly, a three-dimensional model was built using software Pro-E, and the finite element model was built using software hypermesh. Lastly, analysis was done using software ANSYS. The dynamic response of a mounting rack was obtained, and the dynamic strength was verified.

关 键 词：直升机 随机振动分析 动强度 

分 类 号：O242[理学—计算数学] TB12[理学—数学]