噪声与振动控制2011，Vol.31Issue(1)：157-160,4.DOI:10.3969/j.issn.1006-1355-2011.01.034
敷设粘弹性材料的溜槽的试验模态分析
Experimental Modal Analysis of Chute with Viscoelastic Damping
摘要
Abstract
For very large vibration and noise of traditional chutes, a new chute with a viscoelastic damping layer freely attached to its intemal surface is designed. In this paper, hammer excitation method and the LMStest. Lab vibration test system are used to carry out the modal testing for the chute. In this test, the former six order frequencies, modals and damping of the chute are found. The test of MAC matrix shows that the experimental modal parameters measured are truly and effetely. It is found by analysis of the result that the vibration at the exit of the chute is a combination of torsion vibration and bending vibration. The exit should be strengthened to reduce the local vibration. The results offer a reference for the optimal design of chute with a freely attached viscoelastic damping layer.关键词
振动与波/试验模态/模态参数/溜槽分类
矿业与冶金引用本文复制引用
鲍怀谦,韩宝坤,符俊杰,王昌田..敷设粘弹性材料的溜槽的试验模态分析[J].噪声与振动控制,2011,31(1):157-160,4.基金项目
山东省自然基金(Y2007A21) （Y2007A21）
山东科技大学春蕾计划(2008AZZ032) （2008AZZ032）
山东科技大学研究生科技创新基金(YCA090207) （YCA090207）
