矩形脉冲激励下悬挂减振系统易损件冲击特性  

Shock Characteristics of Vulnerable Components of Suspension System under Rectangular Pulse Excitation

作　　者：周园园 陈安军 ZHOU Yuanyuan;CHEN Anjun(School of Mechanical Engineering,Jiangnan University,Wuxi 214122,Jiangsu China;National Light Industrial Packaging Products Quality Supervision and Inspection Center,Wuxi 214122,Jiangsu China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]国家轻工业包装制品质量监督检测中心,江苏无锡214122

出　　处：《噪声与振动控制》2018年第5期71-74,118,共5页Noise and Vibration Control

摘　　要：以考虑易损件2自由度悬挂系统为研究对象,研究矩形波脉冲激励下易损件冲击响应特性。建立矩形波脉冲激励下系统无量纲动力学方程,利用4阶龙格-库塔法对易损件冲击响应进行数值分析,讨论系统悬挂角、频率比等参数对易损件位移和加速度响应的影响规律。算例分析表明,随着系统悬挂角的减少,响应周期延长,易损件加速度响应幅值减少;易损件响应对低频区域较为敏感,增加频率比,能有效抑制冲击响应幅值;随着无量纲脉冲幅值的增加,易损件冲击响应幅值增加。研究结果可为2自由度悬挂系统的设计提供理论依据。The shock response characteristics of vulnerable components of a 2-DOF suspension system are studied under rectangular pulse excitation.The dimensionless dynamic equations of the system are developed,and the numerical analysis of its impact response characteristics is conducted using Fourth-Order Runge-Kutta method.Based on the example analysis,the effects of the suspension angle,the frequency ratio and some other parameters on the displacement and acceleration responses of vulnerable components are discussed.It is shown that with the reduction of the suspension angle,the response period prolongs and the peak of the response acceleration of the vulnerable components decreases.The effect of low frequency region on the response of vulnerable components is particularly sensitive.Increasing frequency ratio of the system can obviously decrease the response acceleration of the vulnerable components.With the increase of the dimensionless peak pulse acceleration,the peak of the shock response of the vulnerable components increases accordingly.The proposed method has provided an academic foundation for design of 2-DOF suspension system.

关 键 词：振动与波 易损件 悬挂系统 矩形脉冲激励 位移响应 加速度响应 

分 类 号：TB485.1[一般工业技术—包装工程] U260.331.5[机械工程—车辆工程]