基于刚柔耦合的转向架构架关键部位疲劳分析
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摘要
以某型地铁车辆转向架构架为研究对象,根据结构模态综合法基本原理,通过有限元模态分析对构架进行主自由度缩减,得到构架模态中性文件。建立地铁车辆刚柔耦合多体动力学模型,利用多体动力学仿真,得到不同工况下构架关键部位的应力时间历程变化趋势。最后采用惯性释放法对构架关键部位进行准静态应力分析,依据车辆刚柔耦合多体动力学模型得到转向架构架关键部位的边界载荷,结合材料的S-N曲线,最后通过虚拟疲劳仿真的方法预测构架关键部位的疲劳寿命。
Taking a certain type of metro vehicle bogie frame as the research object,according to the basic principle of modal synthesis method,the frame modal neutral file hasbeen get through the modal analysis of the frame by free degree reduction.The rigid flexible coupling multibody dynamics model is set up by using the neutral file,which can get access to the stress time history of key part of theframe under different conditions through simulation. Finally,quasi static stress analysis of the key part of the frame hasbeen conductedby inertia relief method of finite element analysis.The boundary loads ofthe key parts of bogie frame can be calculated based on the coupled multi-body dynamics model of vehicle.Combined with the material SN curve,fatigue life of the key parts of the frame have been predicted by the method of virtual fatigue simulation.
Taking a certain type of metro vehicle bogie frame as the research object,according to the basic principle of modal synthesis method,the frame modal neutral file hasbeen get through the modal analysis of the frame by free degree reduction.The rigid flexible coupling multibody dynamics model is set up by using the neutral file,which can get access to the stress time history of key part of theframe under different conditions through simulation. Finally,quasi static stress analysis of the key part of the frame hasbeen conductedby inertia relief method of finite element analysis.The boundary loads ofthe key parts of bogie frame can be calculated based on the coupled multi-body dynamics model of vehicle.Combined with the material SN curve,fatigue life of the key parts of the frame have been predicted by the method of virtual fatigue simulation.
引文
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[5]孙洪铁.有限单元法概述及其基本概念的分析[J],山西建筑,2012,38(14):37-38.(Sun Hong-tie.basic conceptsof Finite element analysis[J].Shanxi Architecture,2012,38(14):37-38.)
[6]陈士军,凌贤长,朱占元.轨道高低不平顺谱分析[J].地震土程与土程振动,2012,32(5):33-37.(Chen Shi-jun,Ling Xian-zhang,Zhu Zhan-yuan.Analysesoftrackvertical profile irregularity spectra[J].Journal of earthquake engineering and engineering vibration,2012,32(5):33-37.)
[7]曹萍,王卫英.微型客车车身疲劳寿命有限元分析[J].机械科学与技术,2012,31(4):538-542.(Cao Ping,Wang Wei-ying.Fatigue life analysis of a minibus body based on finite element method[J].Mechanical Science and Technology for Aerospace Engineering,2012,31(4):538-542.)
[8]Han Tong-yang,Liu Zhi-ming,Li Qiang.Evaluation of fatigue life and reinforcing scheme on 6K electric locomotive traction seats[J].Sci Verse Science Direct,2012(45):930-935.
[9]Ji Won Yoon,Sung Pil Jung,Tae Won Park.Fatigue analysis of the main frame of overhead transportation vehicles using flexible multibody dynamics[J].Journal of Mechanical Science and Technology,2010,24(3):721-730.
[2]安琪,李芾,傅茂海.牵引电机振动对构架疲劳强度的影响[J].西南交通大学学报,2010,45(2):45 209-212.(An Qi,Li Fu,Fu Mao-hai.Influences of traction motor vibration on bogie frame fatigue strength[J].Journalof Southwest Jiaotong University,2010,45(2):45 209-212.)
[3]李艳泽,杨志勇.新型运动车车身疲劳寿命分析研究[J].机械设计与制造,2012(5):153-155.(Li Yan-ze,Yang Zhi-gong.Study on new sports car body fatigue life[J].Machinery Design&Manufacture,2012(5):153-155.)
[4]丁群燕,陈丰.基于刚弹耦合多体动力学仿真的沙滩车下横臂疲劳寿命预测[J].机械设计与制造,2012(4):132-134.(Ding Qun-yan,Chen Feng.Fatigue life prediction for lower arm of ATV based on dynamics simulation of the multi-body coupled with rigid and elastic bodies[J].Machinery Design&Manufacture,2012(4):132-134.)
[5]孙洪铁.有限单元法概述及其基本概念的分析[J],山西建筑,2012,38(14):37-38.(Sun Hong-tie.basic conceptsof Finite element analysis[J].Shanxi Architecture,2012,38(14):37-38.)
[6]陈士军,凌贤长,朱占元.轨道高低不平顺谱分析[J].地震土程与土程振动,2012,32(5):33-37.(Chen Shi-jun,Ling Xian-zhang,Zhu Zhan-yuan.Analysesoftrackvertical profile irregularity spectra[J].Journal of earthquake engineering and engineering vibration,2012,32(5):33-37.)
[7]曹萍,王卫英.微型客车车身疲劳寿命有限元分析[J].机械科学与技术,2012,31(4):538-542.(Cao Ping,Wang Wei-ying.Fatigue life analysis of a minibus body based on finite element method[J].Mechanical Science and Technology for Aerospace Engineering,2012,31(4):538-542.)
[8]Han Tong-yang,Liu Zhi-ming,Li Qiang.Evaluation of fatigue life and reinforcing scheme on 6K electric locomotive traction seats[J].Sci Verse Science Direct,2012(45):930-935.
[9]Ji Won Yoon,Sung Pil Jung,Tae Won Park.Fatigue analysis of the main frame of overhead transportation vehicles using flexible multibody dynamics[J].Journal of Mechanical Science and Technology,2010,24(3):721-730.
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