| 吊弦振动频率及幅度对疲劳寿命的影响分析 |
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| 引用本文： | 彭培火,陈立明,王伟,何凡.吊弦振动频率及幅度对疲劳寿命的影响分析[J].铁道科学与工程学报,2019,16(2):471-477. |
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| 作者姓名： | 彭培火 陈立明 王伟 何凡 |
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| 作者单位： | 北京建筑大学 理学院力学系,北京,102612;中国铁道科学研究院标准计量研究所,北京,100015 |
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| 基金项目： | 中国铁路总公司科技研究开发计划 |
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| 摘 要： | 推导吊弦的振动方程,用数值方法求解振动方程,模拟位移,横截面作用力和弯矩的动态变化规律。根据吊弦的应力时程、利用MATLAB数值计算程序分析影响吊弦疲劳寿命的因素(如振幅和频率)。数值计算结果表明:吊弦疲劳寿命的对数值随着频率和振幅的增加呈现出线性降低的趋势。
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| 关 键 词： | 吊弦 振动方程 有限差分法 应力时程 疲劳特征 |
The effect of frequency and amplitude of dropper on its fatigue life |
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| PENG Peihuo,CHEN Liming,WANG Wei,HE Fan.The effect of frequency and amplitude of dropper on its fatigue life[J].Journal of Railway Science and Engineering,2019,16(2):471-477. |
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| Authors: | PENG Peihuo CHEN Liming WANG Wei HE Fan |
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| Institution: | (Department of Mechanics, School of Science, Beijing University of Civil Engineering and Architecture, Beijing 102612, China;Standards & Metrology Research Institute, China Academy of Railway Sciences, Beijing 100015, China) |
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| Abstract: | PENG Peihuo;CHEN Liming;WANG Wei;HE Fan(Department of Mechanics, School of Science, Beijing University of Civil Engineering and Architecture, Beijing 102612, China;Standards & Metrology Research Institute, China Academy of Railway Sciences, Beijing 100015, China) |
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| Keywords: | dropper vibration equation finite difference method stress-time curve fatigue characteristics |
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