汽车车架OMA实验模态分析  

Automobile frame OMA experimental modal analysis

作　　者：任帅[1] 燕颖[1] 

机构地区：[1]长安大学,陕西西安710064

出　　处：《汽车实用技术》2014年第9期43-45,共3页Automobile Applied Technology

摘　　要：模态参数辨识是系统辨识的一部分,通过模态参数的辨识,可以了解系统或结构的动力学特性,这些动力特性可作为结构有限元模型修正、故障诊断、结构实时监测的评定标准和基础。本文以212车架为研究对象,综合考虑悬挂条件,激励方式及布点位置对实验结果的影响,对其进行模态试验。通过使用ICATS软件对采集到的数据进行时域内的工作模态分析,然后得到模态参数。Modal parameters identification is part of the identification of the system, through the modal parameters identification, we can leam the dynamic characteristics of the system or structure, which can be used as the standard and the foundation of the structure finite element model correction, failure diagnosis, structure real-time monitoring or evaluation. We take 212 frame as the research object. With comprehensive consideration of the influence due to the suspension conditions, stimulation and points and we carry on the frame. Through using the ICATS software to analysis the work modal of the collected data in time domain and get the modal parameters

关 键 词：车架 模态实验 模态参数 ICATS 

分 类 号：U467.3[机械工程—车辆工程]