| 矿用自卸车车架振动疲劳寿命分析 |
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| 引用本文： | 李鹏飞,冯国胜,贾素梅.矿用自卸车车架振动疲劳寿命分析[J].石家庄铁道学院学报(社会科学版),2016(1):97-102. |
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| 作者姓名： | 李鹏飞 冯国胜 贾素梅 |
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| 作者单位： | 石家庄铁道大学 机械工程学院;石家庄铁道大学 机械工程学院;石家庄铁道大学 机械工程学院 |
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| 基金项目： | 国家自然科学基金项目（11272220） |
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| 摘 要： | 为预测某矿用三轴重型自卸车车架的疲劳寿命，在Hypermesh中综合运用壳单元，实体单元，梁单元，焊接单元，刚、柔性连接单元等多种单元建立完整车架有限元模型，分析强度之后对其进行频响分析，得到车架载荷输入与结构应力之间的传递函数；在Nastran中生成车架MNF中性文件，在ADAMS/CAR中建立整车刚柔耦合模型，得到相应的载荷时程曲线，将其进行快速傅里叶变换结合频响分析结果，准确地预估车架疲劳寿命。
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| 关 键 词： | 自卸车车架 频响分析 振动疲劳 |
| 收稿时间： | 2015/4/27 0:00:00 |
Analysis of Vibration Fatigue Life of Mine Dump Truck Frame |
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| Authors: | Li Pengfei Feng Guosheng and Jia Sumei |
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| Institution: | School of Mechanical Engineering, Shijiazhuang Tiedao University;School of Mechanical Engineering, Shijiazhuang Tiedao University;School of Mechanical Engineering, Shijiazhuang Tiedao University |
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| Abstract: | To predict the fatigue life of a triaxial heavy mining dump truck frame, this paper establishes a complete finite element model of the frame in Hypermesh with the use of shell elements,solid elements,beam elements,welding elements,rigid flexible connection elements and other elements, analyses its strength and then makes the frequency response analysis to obtain the transfer function of the input load between the structural stress. The MNF neutral file of the frame is generated in Nastran, and the vehicle rigid flexible coupling model is established in ADAMS/CAR to get the load time curve, then it is transfered into frequency domain using FFT,and combined with the result of frequency response, the frame fatigue life is accurately estimated . |
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| Keywords: | mining dump truck frame frequency response vibration fatigue |
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