采用等效重构载荷的虚拟传递路径分析  

Virtual transfer path analysis using equivalent reconstructed load

作　　者：胡学满 侯亮 卜祥建 周毅博 蔡惠坤 徐杨 HU Xue-man;HOU Liang;BU Xiang-jian;ZHOU Yi-bo;CAI Hui-kun;XU Yang(Department of Mechanical and Electrical Engineering,School of Aerospace Engineering,Xiamen University,Xiamen 361102,China;Institute of Aeronautical Control System,Wuxi 214063,China)

机构地区：[1]厦门大学航空航天学院机电工程系,福建厦门361102 [2]中国航发控制系统研究所,江苏无锡214063

出　　处：《振动工程学报》2021年第6期1151-1160,共10页Journal of Vibration Engineering

基　　金：国家自然科学基金面上项目(51975495);厦门市重大科技项目(3502Z20191019);中央引导地方科技发展专项(2020L3002)。

摘　　要：工作载荷识别复杂,传递路径描述困难等是小型航空机载装备传递路径分析(Transfer Path Analysis,TPA)所面临的难题。根据装备系统耦合特征,以有限载荷节点表征分布动态载荷区域,并运用基于传递关系矩阵的载荷反演技术重构路径点等效载荷,将无限传递路径简化为有限路径,构建了虚拟传递路径分析(Virtual Transfer Path Analysis,VTPA)模型。以燃油泵调节器为例,将4种VTPA模型的合成结果与振动响应分析结果进行对比,选择合成效果最佳的基于传递率矩阵的无源系统虚拟传递路径分析(TransmissibilityBased Singlebody Transfer Path Analysis,TBSTPA)模型进行路径贡献量分析。结果表明垂直于安装面的路径方向对目标响应影响最大,增加辅助支撑装置能够显著降低电插座振动响应,验证了TBSTPA方法的有效性。The transfer path analysis(TPA)of small airborne equipment is faced with many problems,such as the complexity of working load identification and difficulty of vibration transfer path description.According to the coupling characteristics of the equipment system,the finite load nodes are used to represent the distributed dynamic load area,and the equivalent load of path point is reconstructed by using the load inversion technique based on the transfer relation matrix.The infinite transfer paths are simplified in the form of finite paths,and the virtual transfer path analysis(VTPA)model is constructed.Taking the fuel pump regulator as an example,synthesis results of the four VTPA models are compared with the forced response analysis results,and the transmissibility-based single-body transfer path analysis(TB-STPA)model with the best synthesis results is selected for path contribution analysis.The result shows that the path direction perpendicular to the installation surface has the greatest impact on the target positions,responses.Adding an auxiliary support mechanism can significantly reduce the response of the electrical socket,which verifies the effectiveness of TB-STPA method.

关 键 词：等效载荷 机载装备 虚拟传递路径 燃油泵调节器 贡献量 

分 类 号：O328[理学—一般力学与力学基础] TB535[理学—力学]