机械弹性车轮有限元计算与试验模态的相关性研究  

Correlation between the finite element calculation and experimental mode of a mechanical elastic wheel

作　　者：王强[1] 赵又群[1] 林棻[1] 杜现斌[1] 付宏勋[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《哈尔滨工程大学学报》2017年第1期86-93,共8页Journal of Harbin Engineering University

基　　金：总装备部探索研究重大资助项目(NHA13002);江苏省普通高校研究生科研创新计划(KYLX_0241);中央高校基本科研业务费专项资金(NP2016412)

摘　　要：为了满足新型机械弹性车轮结构响应预测和动态优化设计的要求,采用有限元计算与试验测试相结合的方法对其振动特性进行了研究。通过有限元分析得到车轮结构的振动模态频率及相应的振型,结合参数灵敏度分析和试验模态对其有限元模型进行修正。基于内积相关度理论,对修正后的有限元计算模态和试验模态参数进行了相关性分析,根据两者的吻合程度,验证了有限元建模及修正分析方法的有效性;修正后的有限元模型精度得到提高,计算结果更加反映了车轮的结构特性,为机械弹性车轮结构动态优化设计研究提供了参考。To meet the requirements of response prediction and dynamic optimization design,the vibration charac-teristics of a new mechanical elastic wheel （MEW） were studied by combining the finite element calculation and testing experiments. The frequency of the vibration modes and the corresponding vibration modes were obtained through the finite element analysis. In combination with the analysis results of parameter sensitivity and the test modes,the finite element model of MEW was updated. On the basis of the theory of inner product correlation, cor-relative analysis of the modal parameters that were obtained from the updated finite element calculation and experi-ments was conducted. Results from the correlative analysis proved the validity of the finite element modeling and up-dated method. The precision of the updated finite element model was improved to the point where the calculation re-sult could accurately reflect the structure characteristics of the MEW, providing a reference for further study on dy-namic optimization design of wheel structures.

关 键 词：机械弹性车轮 有限元分析 模态试验 模型修正 相关性分析 

分 类 号：U463.3[机械工程—车辆工程]