| 盘形制动系统颤振临界速度的计算及分析 |
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| 引用本文： | 李元元,丁旺才,李飞,张惠. 盘形制动系统颤振临界速度的计算及分析[J]. 润滑与密封, 2011, 36(2). DOI: 10.3969/j.issn.0254-0150.2011.02.012 |
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| 作者姓名： | 李元元 丁旺才 李飞 张惠 |
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| 作者单位： | 1. 兰州交通大学机电工程学院,甘肃兰州,730070
2. 株洲时代新材料科技股份有限公司,湖南株洲,412007 |
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| 基金项目： | 国家自然科学基金资助项目(50675092); 甘肃省自然科学基金资助项目(0710RJZA052) |
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| 摘 要： | 建立干摩擦的单自由度盘形制动系统动力学模型,基于微分包含理论建立其数学模型,采用数值方法计算系统发生颤振运动的临界速度,并讨论阻尼比、动摩擦因数以及最大静摩擦因数与动摩擦因数之差对临界速度的影响。结果表明:系统发生颤振的临界速度随着阻尼比的增大而减小;随动摩擦因数的增大而增大;在动摩擦因数确定的情况下,随最大静摩擦因数与动摩擦因数之差增大而增大,但最终趋于恒定,在阻尼比ζ=0.001情况下最大静摩擦因数为动摩擦因数1.115倍左右时临界速度不再发生变化。
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| 关 键 词： | 盘形制动系统 颤振 微分包含 临界速度 |
Calculation and Analysis of Critical Chattering Velocity in Brake System |
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| Li Yuanyuan,Ding Wangcai,Li Fei,Zhang Hui. Calculation and Analysis of Critical Chattering Velocity in Brake System[J]. Lubrication Engineering, 2011, 36(2). DOI: 10.3969/j.issn.0254-0150.2011.02.012 |
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| Authors: | Li Yuanyuan Ding Wangcai Li Fei Zhang Hui |
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| Affiliation: | Li Yuanyuan1 Ding Wangcai1 Li Fei2 Zhang Hui1(1.School of Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China,2.Zhuzhou Times New Material Technology Co.,Ltd,Zhuzhou Hunan 412007,China) |
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| Abstract: | A dynamic model of one-degree-of-freedom disc brake system under dry friction was established,and the mathematical model was constructed based on the theory of differential inclusion,the critical velocity was calculated numerically,and the effects of damping ratio,kinetic frictional coefficient and the difference quantity of maximal static frictional coefficient and kinetic frictional coefficient on critical velocity were discussed separately.Results show that the critical velocity decreases as the damping ... |
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| Keywords: | disc brake system chatter differential inclusion critical velocity |
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