轨道车辆铝合金车体结构惯性参数识别方法  

Inertia Parameter Identification Method for Aluminum Alloy Carbody Structure of Railway Vehicle

作　　者：刘金安 庞会文 翁建生[2] LIU Jin’an;PANG Huiwen;WENG Jiansheng(Basic R&D department of CRRC Changchun Railway Vehicle Co.,Ltd.,Changchun 130062,China;Department of Vehicle Engineering,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]中车长春轨道客车股份有限公司基础研发部,吉林长春130062 [2]南京航空航天大学能源与动力学院车辆工程系,江苏南京210016

出　　处：《铁道车辆》2022年第3期92-97,共6页Rolling Stock

摘　　要：轨道车辆车体结构惯性参数是动力学参数优化分析计算的基础参数,由于车体是长宽比大、质量和体积庞大的对称结构,测试其惯性参数在工程上是一个难点。文章以轨道车辆铝合金车体结构为研究对象,应用模态试验测试的频响函数,运用质量线法对其惯性参数进行识别。考虑工程应用,对比三维实体数字模型数值计算结果,分析质量线法产生差别的原因。结果表明,通过模态试验质量线法识别轨道车辆铝合金车体结构质心和惯性参数的方法可行。The inertia parameters of railway vehicle carbody are the basic parameters of dynamic parameter optimization analysis and calculation.Because the carbody is a symmetrical structure with large length-width ratio,large mass and volume,it is difficult to test the inertia parameters in engineering.Taking the aluminum alloy carbody structure of railway vehicle as the research object,the frequency response function of modal test is used to identify its inertia parameters by mass line method.Considering the engineering application,the numerical results of three-dimensional solid digital model are compared to analyze the reasons for the difference of mass line method.The results show that it is feasible to identify the centroid and inertia parameters of aluminum alloy carbody structure by modal test mass line method.

关 键 词：轨道车辆 铝合金车体 模态试验 质量线法 惯性参数 

分 类 号：U271.91[机械工程—车辆工程]