摘要
侧杆机架是飞机侧杆操纵装置的重要组件,振动疲劳是其结构失效的主要因素。为提高侧杆机架的抗振性和稳定性,并减轻重量,利用有限元分析方法对某型电传飞机主动式侧杆机架进行了模态分析和随机振动的加速度功率谱密度模拟分析。首先运用三维软件CATIA建立侧杆机架CAD模型;其次通过工程分析软件ANSYS Workbench对其进行了振动模态与随机振动分析,获得了侧杆机架不同阶数的固有频率、振型以及振动应力分布云图;最后对其进行拓扑优化分析,得到了机架的最佳重量。实现了机架在满足振动特性要求前提下结构优化和减轻重量,可为下一步的改进设计与试验研究提供支撑。
Frame is an important component of the FBW （Fly-By-Wire） aircrmCt＇ s control active side-stick device, and the vibration fatigue is a main factor of its structural failure. In order to improve the anti-vibration character, stability and reduce weight of the side-stick frame, the finite element analysis method is used to the modal analysis and random vibration acceleration PSD （Power Spectral Density） simulation analysis. Firstly, three-dimensional software CATIA is used to build the CAD model of the frame; secondly, the engineering analysis software ANSYS Workbench is used to conduct the vibration modal and random vibration analysis, so the natural frequency and vibration mode of different order, and stress nephogram of the frame is acquired; finally, in order to obtain the optimal weight of the frame, the topology optimization analysis is conducted. Under the precondition of meeting vibration character requirements, structure optimization and lightweight of the frame can be achieved, and this paper can provide a reference for further design improvement and test research.
出处
《机电工程技术》
2017年第8期103-107,共5页
Mechanical & Electrical Engineering Technology
基金
航空科学基金资助项目(编号:20150863003)
关键词
飞机主动侧杆
模态分析
随机振动分析
拓扑优化
aircraft＇ s active side-stick
modal analysis
random vibration analysis
topology optimization
