铁道客车车体模态分析及垂向弯曲频率优化研究
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摘要
基于有限元模态分析和试验模态分析技术对某型铁道客车车体进行了模态参数识别。由于整备车体一阶垂向弯曲频率的计算值与试验值均低于标准要求的10Hz,利用有限元模态分析方法对车体结构进行了局部优化,最终使整备车体一阶垂向弯曲频率提高到10.64Hz,满足了标准的要求。
The identification of modal parameters is carried out for a certain type of railway passenger car carbodies on the basis of finite element modal analysis and testing modal analysis technology.Since both the calculated value and the tested value of the first order vertical bending frequency of carbodies in working order are lower than 10 Hz,which is required by the standard,the finite element modal analysis method was used to make the local optimization of the carbody structure,the first order vertical bending frequency of carbodies in working order finally reached 10.64 Hz,which has met the requirement of the standard.
The identification of modal parameters is carried out for a certain type of railway passenger car carbodies on the basis of finite element modal analysis and testing modal analysis technology.Since both the calculated value and the tested value of the first order vertical bending frequency of carbodies in working order are lower than 10 Hz,which is required by the standard,the finite element modal analysis method was used to make the local optimization of the carbody structure,the first order vertical bending frequency of carbodies in working order finally reached 10.64 Hz,which has met the requirement of the standard.
引文
[1]TB/T 3115-2005,机车车辆动力学性能台架试验方法[S].
[2]缪炳荣,肖守讷.机车车体结构模态的有限元分析[J].电力机车技术,2002,25(4):41-45.
[3]王勖成.有限单元法[M].北京:清华大学出版社,2003.
[4]王长科,阳光武,等.列车车体结构一阶垂向振动参数研究[J].机械科学与技术,2016,35(8):1259-1266.
[5]阳光武,高一丁,万波.车体一阶垂向弯曲频率解析分析[J].铁道车辆,2015,53(1):1-5.
[6]YANG G W,WANG C K.Effect of train carbody’s parameters on vertical bending stiffness performance[J].Chinese Journal of Mechanical Engineering,2016,29(6):1120-1127.
[2]缪炳荣,肖守讷.机车车体结构模态的有限元分析[J].电力机车技术,2002,25(4):41-45.
[3]王勖成.有限单元法[M].北京:清华大学出版社,2003.
[4]王长科,阳光武,等.列车车体结构一阶垂向振动参数研究[J].机械科学与技术,2016,35(8):1259-1266.
[5]阳光武,高一丁,万波.车体一阶垂向弯曲频率解析分析[J].铁道车辆,2015,53(1):1-5.
[6]YANG G W,WANG C K.Effect of train carbody’s parameters on vertical bending stiffness performance[J].Chinese Journal of Mechanical Engineering,2016,29(6):1120-1127.