摘要
提出了一种新型结构的组合式颗粒阻尼器,该阻尼器采用两层减振结构,外层为弹簧减振,内层为塑性阻尼减振。改变颗粒填充率、腔体间隙、弹簧刚度和填充颗粒材质后,研究了不同结构参数对该阻尼器减振性能的影响。结果表明:组合式颗粒阻尼器比传统的颗粒碰撞阻尼器具有更优秀的减振性能;钢球和颗粒的体积比约为1∶2且弹簧刚度值为主系统刚度值的10%以下时具有最好的减振效果;改变填充颗粒材质对减振效果影响不显著。
A new kind of combined particle impact damper was proposed, in which two kinds of damping forms-via springs outside and via particle plastic deformation inside. The response of various damper components was obtained from experiments, by varying the particle packing ratio, the con- tainer clearance, the stiffness of spring, and the particle materials. The experimental results show that the combined particle impact damper has excellent damping performance, and is better than the traditional particle impact damper. The damper has the best performance when the volume ratio be- tween the steel ball and particles is about 1 ： 2 and the spring stiffness is about 10% of the main sys- tem stiffness. Changing particle materials has little influence on the damping performance.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2015年第14期1953-1958,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51475308
51005157)
关键词
颗粒
阻尼器
弹簧刚度
填充率
间隙
particle damper spring stiffness packing ratio clearance
作者简介
杜妍辰，女，1976年生。上海理工大学医疗器械与食品学院副教授。主要研究方向为振动控制技术与应用。发表论文20余篇。
张虹，女，1988年生。上海理工大学医疗器械与食品学院硕士研究生。
