| 基于有限元仿真车轮多轴疲劳强度分析 |
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| 引用本文： | 郑红霞,谢基龙,周素霞,冯宝富.基于有限元仿真车轮多轴疲劳强度分析[J].北京交通大学学报(自然科学版),2009,33(4). |
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| 作者姓名： | 郑红霞 谢基龙 周素霞 冯宝富 |
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| 作者单位： | 鲁东大学,交通学院先进制造与自动化技术重点实验室,山东,烟台,264025;北京交通大学,机械与电子控制工程学院,北京,100044 |
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| 基金项目： | 铁道部科技发展计划项目资助(2005J025) |
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| 摘 要： | 基于UIC510-3规程和热负荷试验,确定了车轮疲劳强度分析的计算载荷工况,采用有限元方法数值模拟了运行状态下车轮的应力变化规律,进行了车轮疲劳强度评定.采用最大主应力方法将多轴应力状态转化为单轴应力,通过Haigh-Goodman疲劳极限方程,得出机械载荷下车轮辐板孔的疲劳强度满足要求;采用Goodman方程,将制动热负荷产生的零-拉脉动循环转化为对称循环,根据辐板材料的S-N曲线评价,得出单纯制动热负荷下辐板孔满足疲劳强度要求;提出制动热应力与机械波动应力的叠加方法,采用Miner法则预测机械载荷与制动热负荷组合作用下辐板孔裂纹的形成寿命.由不同载荷下车轮疲劳强度的评价结果,判断出导致辐板孔边裂纹形成的载荷因素是机械载荷与坡道制动的综合作用.
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| 关 键 词： | 车轮 有限元分析 多轴疲劳 疲劳强度 |
Multi-Axial Fatigue Strength Analysis of Wheel Based on FEA |
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| ZHENG Hongxia,XIE Jilong,ZHOU Suxia,FENG Baofu.Multi-Axial Fatigue Strength Analysis of Wheel Based on FEA[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2009,33(4). |
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| Authors: | ZHENG Hongxia XIE Jilong ZHOU Suxia FENG Baofu |
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| Institution: | 1.Key Laboratory of Advanced Manufacturing and Automation Technology;School of Transportation;Ludong University;Yantai Shandong 264025;China;2.School of Mechanical and Electronic Control Engineering;Beijing Jiaotong University;Beijing 100044;China |
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| Abstract: | Based on the UIC510-3 and the thermal load test,the load conditions for analyzing the fatigue strength of the wheel have been determined.The radial stresses under the operation conditions were analyzed by using finite element method and the fatigue strength of the wheel was evaluated.The multiaxial stress was converted into the uniaxial stress with the maximum principal stress method, and the fatigue strength under mechanical load was evaluated.It can be concluded that the fatigue strength can satisfy the r... |
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| Keywords: | wheel FEA multi-axial fatigue fatigue strength |
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