车辆摩擦制动系统非线性动力学研究

项目名称： 车辆摩擦制动系统非线性动力学研究

项目编号： No.11272228

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 丁千

作者单位： 天津大学

项目金额： 90万元

中文摘要： 随着城市和城际快速轨道交通的发展，人们对车辆行驶中安静、舒适和环境友好性的要求随之提高，减小或消除车辆噪声的需求是其中重要的方面。摩擦制动噪声是行驶车辆的主要噪声源之一，由结构振动引起。由于结构复杂、影响因素多，迄今没有通用的预防理论。本项目针对列车盘形制动装置的结构和材料摩擦特点，建立分析噪声振动的结构动力学联合方程，包含来自局部接触、摩擦非线性和参数时变因素。应用非连续基函数方法与特征正交分解相结合的方法，对系统进行合理的综合降维。应用有效的数值模拟结合非线性动力学分析，全面研究滞-滑自激振动和结构不稳定振动的产生条件、形式和复杂的演变过程，揭示结构参数和制动运行工况的影响规律，提出抑制噪声振动的结构参数设计方法。本项目研究为制动系统无噪声设计提供理论基础，并促进局部强非线性高维系统的动力学和控制研究。

中文关键词： 非光滑系统；摩擦；局部非线性；降维；滞-滑颤振

英文摘要： Along with the development of city and intercity rapid rail transit, requirements in quiet, comfortable and environmentally friendly on the vehicles are increasing. Reducing or eliminating the noise of vehicles is one of the important aspects of the demand. Brake noise is one of the main sources of vehiclenoise, caused byvibration of structure. Because of the complex structure and multiple influence factors, there is no general prevention theory up to now. Aiming at the characteristics of structure and friction of the foundation braking equipment of trains, this project will establish the combined equations of structure dynamics, in which localized contacting, nonlinear and time-varying factors from friction are included,for noise vibration analysis. The methods of discontinuous basis functions and the proper orthogonal decomposition (POD-Galerkin) will be applied in combinations for effective and reasonal order reduction of the system. Application of effective numerical simulation combined with nonlinear dynamic analysis will be carried out to comprehensively study the generating condition, form and the evolution of complex processes of the self-excited stick-slip vibration and structure instability vibration. By revealing the structure parameters and the braking conditions on the noise vibration, the design me

英文关键词： non-smooth system；friction；localized nonlinearity；order reduction；stick-slip vibration