跨坐式单轨车辆转向架构架疲劳寿命预测研究
杜子学马帅杨震唐飞李耀
Fatigue Life Prediction of Straddle Monorail Vehicle Bogie Frame
DU ZixueMA ShuaiYANG ZhenTANG FeiLI Yao
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作者信息:重庆交通大学机电与汽车工程学院，400074,重庆
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Affiliation:School of MechanicalElectronic & Automobile Engineering, Chongqing Jiaotong University, 400074, Chongqing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.08.011
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中图分类号/CLCN:U260.331+.8 ∶U232
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栏目/Col:研究报告
摘要:
为了验证采用计算机仿真分析跨坐式单轨车辆转向架构架疲劳寿命的可行性,建立了有限元分析模型，通过施加单位载荷，计算求得应力；分别将仿真分析得到的载荷时间历程和试验获取的载荷时间历程作为载荷激励，根据SN曲线和Miner法则，结合疲劳分析软件Ncode对转向架构架进行疲劳寿命预测。基于仿真载荷时间历程的疲劳寿命为56.1年，基于试验载荷时间历程的疲劳寿命为62年，两种疲劳寿命分析结果相近，说明基于仿真进行疲劳寿命预测具有可行性。
Abstracts:
To verify the feasibility analysis of straddle monorail vehicle bogie frame fatigue life by using computer simulation analysis, a finite element model is established, and the stress results are calculated by applying the unit load. The load time history obtained by the simulation analysis and the load time history obtained by the test are used as load excitation respectively. Then, according to the S-N curve and the Miner Rule, the bogie frame fatigue life is predicted combined with the fatigue analysis software Ncode. Based on the simulated load time history, the fatigue life is predicted as 56.1 years, while based on the experimental load time course, the fatigue life is 62 years. The results of the two fatigue life analyses are very similar, indicating that it is feasible to predict the fatigue life based on simulation.
引文 / Ref:
杜子学，马帅，杨震，等.跨坐式单轨车辆转向架构架疲劳寿命预测研究[J].城市轨道交通研究，2019，22(08):50.
DU Zixue，MA Shuai，YANG Zhen，et al.Fatigue life prediction of straddle monorail vehicle bogie frame[J].Urban Mass Transit，2019，22(08)：50.
DU Zixue，MA Shuai，YANG Zhen，et al.Fatigue life prediction of straddle monorail vehicle bogie frame[J].Urban Mass Transit，2019，22(08)：50.
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