摘要
颗粒阻尼减振机理是利用其损耗的振动能量,来达到减振的效果.为了研究颗粒直径差等因素对阻尼器减振效果的影响,搭建了简支梁试验装置,并设计试验方案,最后对所得数据进行分析.分析结果表明:颗粒直径大的比直径小的平均振幅减振百分比大24.69%;改变颗粒直径差对于简支梁的共振区有明显的减振效果,平均减振比达到52.57%;质量大的颗粒及砂子混合体,作为阻尼器能达到良好的减振效果,平均减振比为58.25%.以上结论为颗粒阻尼器减振机理的理论研究提供了参考依据.
Particle vibration damping mechanism makes use of its energy consumption.In order to study the influence of the factors of the particle diameter on damping effect of the damper,the test device is built,and test program is designed,Finally,the data is analyzed. The results show：the particle diameter greater than the diameter of small average amplitudedamping percentage 24.69%.Changes of different particle diameter have obvious effect of vibration reduction for simply supported beam resonance region,the average damping ratio can reach 52.57%.Mixture of massive particles and sand,with which the damper can obtain a better damping effect.The average damping ratio is 58.25%.These conclusions provide a reference basis for theoretical study on the damping mechanism of particle damper.
出处
《陕西科技大学学报（自然科学版）》
2014年第3期119-122,共4页
Journal of Shaanxi University of Science & Technology
基金
陕西省自然科学基础研究计划项目(2014JM7264)
关键词
颗粒阻尼减振
颗粒直径差
简支梁
particle damping
particle diameter difference
simply supported beam
