基于白车身的模态试验方法分析  

Analysis on Modal Test Methods Based on Certain White Body

作　　者：陈明[1] 周正[1] 李绍磊[1] 

机构地区：[1]东风汽车公司技术中心,襄阳441004

出　　处：《汽车科技》2013年第1期58-61,共4页Auto Sci-Tech

摘　　要：利用试验模态分析技术进行车身振动特性分析时,不同的模态测试方法是否对测试结果有一定程度的影响,不同的试验对象应用哪种试验方法会更加行之有效,这些问题目前尚没有定论。以试验模态分析理论为基础,对某指定车型白车身依次进行SIMO和MIMO测试系统条件下的试验模态分析,获得并分析比对两次试验结果,研究两种测试方法下获得的试验结果差异,从而为以后针对不同的试验对象确定更好的模态试验方法积累相关经验。Whether different modal test method have certain impact on test results.Which test method will be more effective to different test object？ These issues were still inconclusive when body vibration characteristics were analyzed by experimental modal analysis technique.In this paper,experimental modal analysis under the conditions of SIMO and MIMO test systems have been done based on certain white body,and the test results were obtained and had been analyzed.The relevant experiences of finding better modal test methods for different test objects have been accumulated.

关 键 词：模态试验方法 SIMO MIMO 

分 类 号：U467.3[机械工程—车辆工程]