用MATLAB计算发动机悬置系统的固有频率和主振型  

Obtaining the natural frequency and main vibration mode of engine mount system using Matlab

作　　者：曾令贤[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《汽车科技》2005年第4期27-29,共3页Auto Sci-Tech

摘　　要：介绍了计算发动机橡胶悬置系统固有频率和主振型的过程,利用MATLAB编程并验证程序的正确性。通过程序的运行,能快速获得悬置振动系统的固有特性,为设计人员判断悬置系统是否会发生共振提供理论依据,也为进一步分析系统的响应打下了必要的基础。This paper discussed the details of calculating the natural frequency and main vibration mode of rubber engine mount system. A Matlab program was made up and checked to be very useful. It is rapid to obtain the characteristics of engine mount system using the program. It gives the theory base of estimating engine mount system sympathetic vibration, as well as it is base of analyzing the system response.

关 键 词：发动机悬置 固有频率 主振型 MATLAB 自由振动 刚度矩阵 惯性矩阵 

分 类 号：U464.133[机械工程—车辆工程]