| 含干摩擦的二自由度制动系统颤振分析 |
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| 引用本文： | 唐进元,熊兴波,陈思雨.含干摩擦的二自由度制动系统颤振分析[J].振动与冲击,2010,29(3):178-181. |
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| 作者姓名： | 唐进元 熊兴波 陈思雨 |
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| 作者单位： | 中南大学,现代复杂装备设计与极端制造教育部重点实验室,中南大学,机电工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金项目，国家重点基础研究发展计划(973计划项目) |
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| 摘 要： | 以二自由度颤振系统为对象,对含有干摩擦的制动系统的颤振分岔、粘滑等复杂的非线性动力学行为进行研究。采用非线性摩擦系数、用二自由度的制动模型取代单自由度模型,建立相应的系统动力学模型;利用Runge-Kutta-Fehlberg(RK45)法数值分析与研究了系统动力学特性,得到随制动速度、支撑刚度和阻尼变化的质量块颤振振幅的变化曲线,分析发现:系统在低速下出现颤振现象,系统的支撑刚度和阻尼对其颤振的剧烈程度具有一定的影响,合理的系统参数能够减轻系统的颤振。
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| 关 键 词： | 转向架 颤振 干摩擦 分岔 |
| 收稿时间： | 2009-1-19 |
| 修稿时间： | 2009-3-23 |
Nonlinear dynamic analysis of vehicle bogie chatter system with two degrees of freedom |
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| TANG Jin-yuan,XIONG Xing-bo,CHEN Si-yu.Nonlinear dynamic analysis of vehicle bogie chatter system with two degrees of freedom[J].Journal of Vibration and Shock,2010,29(3):178-181. |
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| Authors: | TANG Jin-yuan XIONG Xing-bo CHEN Si-yu |
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| Affiliation: | TANG Jin-yuan,XIONG Xing-bo,CHEN Si-yu(Key Laboratory of Modern Complex Equipment Design , Extreme Manufacturing(Central South University),Ministry of Education,School of Mechanical , Electrical Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Chatter,stick-slip,and other nonlinear complex dynamic phenomena were investigated on a two degrees of freedom chatter system with dry friction.Dynamic model combined with nonlinear coefficient of friction was established.Dynamic characteristics were quantitatively analysed by using Runge-Kutta-Fehlberg(RK45) to obtain the curves of chatter amplitude changing with brake speed,stiffness k2 and damping c2.The results show that,the flutter phenomena can be found when the brake moves at a low speed.The intensit... |
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| Keywords: | bogie chatter dry friction bifurcation |
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