摘要
为进一步研究弹性约束颗粒碰撞阻尼器的减振性能,提出了该阻尼系统的动力学模型,并模拟了该阻尼器对悬臂梁的减振效果。同时,对5种不同刚度的弹性约束颗粒碰撞阻尼器的减振效果进行了实验研究。结果表明:理论计算与实验的结果基本吻合,证明所建立的弹性约束下的颗粒碰撞阻尼系统的计算模型是可靠的;在弹性约束下的颗粒碰撞阻尼系统中,其刚度比对减振效果的影响是非线性的,且弹簧刚度对该碰撞系统的共振点存在影响。
In order to study the vibration reduction effects of particle impact damper with elastic restraints on cantilever beam,a dynamics model of the damper was proposed,and its damping performance was simulated by numerical calculations.At the same time,the damping effects of 5different stiffnesses of the particle impact damper with elastic restraints were studied experimentally.The results show that the calculated results are in good agreement with the experimental ones,indicating that the dynamics model established is reliable.And in the particle impact damper system with elastic restraints,the damping effects of spring stiffness ratio are nonlinear,and the spring stiffness has effects on the resonance point of the collision system.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2016年第21期2934-2938,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51475308)
关键词
弹性约束
颗粒碰撞阻尼
动力学模型
刚度比
elastic restraint
particle impact damper
dynamics model
stiffness ratio
