基于试验频响函数刚体特性参数的计算及其应用  

CALCULATION AND APPLICATIONS OFRIGID BODY PROPERTIES BASED ONEXPERIMENTAL FREQUENCYRESPONSE FUNCTION DATA

作　　者：金新灿[1] 孙守光[1] 陈光雄[2] 

机构地区：[1]北京交通大学机电学院,北京100044 [2]西南交通大学机械学院,成都610031

出　　处：《机械工程学报》2005年第3期206-210,共5页Journal of Mechanical Engineering

基　　金：铁道部科技发展资助项目(97J04)

摘　　要：试验频响函数(FRF)正越来越成功、广泛地应用于动态和振动系统的不同领域中。基于模态试验的频响函数,尤其是频响函数中的质量线与刚体特性参数的内在关系,提出了一种简便、易行且精确的进行刚体惯量特性参数的计算方法。进行了相关理论的推导,通过实际试验验证分析了该方法。对大型复杂的结构,采用该方法具有一定的优势。Experimental frequency response functions(FRF) are more and more successfully used in different fields of dynamics and vibrations. According to the FRFs in modal testing, especially the inherent relationship between the massline in FRFs and rigid body properties, a new calculation is advanced on a handy, feasible and accurate rigid body properties. The first part derives the theory and the practical implementation from this method. The second part is about practical test cases, which were investigated and verified. Finally, the conclusions point out this method is suitable for the large, complicated configurations.

关 键 词：频响函数 质量线 刚体 特性参数 计算 

分 类 号：TH123[机械工程—机械设计及理论]