带有弹性偏心块惯性振动机过渡过程的动态响应分析  

Dynamic Response Analysis for the Transition Process of Inertial Vibrator with Elastic Eccentric Block

作　　者：侯祥林 伍丹霞 王鑫 HOU Xiang-lin;WU Dan-xia;WANG Xin(School of Mechanical Engineering,Shenyang Jianzhu University,Liaoning Shenyang 110168,China)

机构地区：[1]沈阳建筑大学机械工程学院,辽宁沈阳110168

出　　处：《机械设计与制造》2023年第5期191-197,共7页Machinery Design & Manufacture

基　　金：大型建筑机械变截面薄壁钢结构体系稳定问题的研究与应用(2015020129)。

摘　　要：针对惯性振动机启动和停车过渡过程中经过共振区时振动时幅值的急剧增大问题,提出了一种带有弹性偏心块结构的惯性式振动机,分析了振动机过渡过程的动态响应问题。应用达朗贝尔原理建立带有弹性偏心块结构的四自由度振动机系统的动力学方程。提出运用龙格-库塔法数值方法求解振动机起停过程中偏心块转动量、位置、振动机的位移与速度变量随时间的变化关系,确定振动系统在振动中的共振时的最大振幅。与固定偏心块的单轴惯性振动机响应对比,在共振时最大振幅值较后者小。同时与ADAMS振动模型仿真过渡过程结果对比,验证了理论分析的正确性。论文研究将为工程中惯性振动机共振时振幅值的减少提供理论参考。In view of the sharp increase of vibration amplitude when the inertial vibration motor passes through the resonance zone during the transition process of starting and stopping,an inertial vibration machine with elastic eccentric block structure is proposed,and the dynamic response in transient process of vibration motor is analyzed.D′Alembert′s principle is applied to establish the kinetic equation of a four degree of freedom vibration motor system with elastic eccentric block structure.It is proposed that the numerical method of Runge-Kutta method is used to solve the variation relationship between the momentum,position,displacement and velocity of the eccentric block with time during the start and stop of the vibration motor,to determine the maximum amplitude of the vibration system when it resonates in vibration.Compared with the response of single-axis inertial vibration motor with fixed eccentric block,The maximum amplitude value is smaller than the latter at resonance.At the same time,compared with the results of transition process of ADAMS vibration model,the correctness of theoretical analysis is verified.This paper will provide a theoretical reference for the reduction of amplitude value during the resonance of inertial vibration motor in engineering.

关 键 词：达朗贝尔 过渡过程 ADAMS 龙格-库塔法 振动响应 

分 类 号：TH16[机械工程—机械制造及自动化] TH13.1