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[中英翻译] 车门振动能量流分析的试验研究

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发表于 2013-11-14 20:30:31 |只看该作者 |倒序浏览

本帖最后由 lorry 于 2013-11-14 20:39 编辑

作者：lorry 日期：2013-11-14 原文地址：http://www.skywj.com/thread-9392-1-1.html

Experimental Study On the Energy Flow Analysis of Vibration of an Automobile Door车门振动能量流分析的试验研究

ABSTRACT摘要
The Energy Flow Analysis (EFA) can be effectively used to predict structural vibration in medium-to-high frequency range. In this paper, Energy Flow Finite Element Method (EFFEM) based on EFA has been used to predict the vibration of an automobile door. The predicted results for the frequency response function of the door have been compared with corresponding experimental results. In the experiment, the automobile door has been divided into several subsystems and the loss factor of each subsystem has been measured. The input mobility at a source point has been also measured. The data for the loss factors and the input mobility have been used as the input data to predict the vibration of the automobile door with EFFEM. The frequency response functions have been measured over the surface of the door. The comparison between the experimental results and the predicted results for the frequency response functions showed that EFFEM could be an effective tool to predict the structural vibration.

能量流分析可以有效预测在中高频域范围内的结构振动。本文利用基于EFA的能量流有限元分析法对一辆车门的振动进行预测，并对门的频域响应函数预测结果和相应的的试验结果做了比较。在试验中，车门被分为几个系统，并测量了每个子系统的损耗系数，同时也测量了一个中心点处的输入流动性。损耗系数的数据和输入流动性作为EFFEM的输入数据来预测车门的振动情况。频域响应函数在车门表面测量。通过对试验结果和频域响应函数的预测结果进行比较，可以看出EFFEM，并作为一种工具有效的预测结构振动。