管桩离心机振动噪声控制研究

发布时间：2018-05-13 04:35

本文选题：机电工程 + 离心机　；参考：《重庆交通大学学报(自然科学版)》2015年06期

【摘要】：为了降低管模离心机的振动噪声,建立了离心机管模的三维模型并进行模态分析,研究了管模的固有特性。经过对无管模、空管模和实管模的振动噪声的试验分析,得知托轮和管模的相互作用对振动噪声的影响很大,需要改变它们的接触形式以减小冲击振动。通过对阻尼层减振降噪机理进行研究,提出在托轮表面增加阻尼材料层、变刚性接触为弹性接触的减振降噪方法。对采用阻尼托轮与原托轮的离心机进行了对比试验,结果表明,阻尼托轮使离心机的振动能量减少60%以上,噪声降低10 d B(A)以上,减振降噪效果非常显著。
[Abstract]:In order to reduce the vibration and noise of the tube mold centrifuge, the three-dimensional model of the tube die of the centrifuge was established and the modal analysis was carried out, and the inherent characteristics of the tube die were studied. Through the experimental analysis of the vibration and noise of the tubeless, air-tube and real tube modes, it is found that the interaction between the supporting wheel and the tube mode has a great influence on the vibration and noise, and it is necessary to change their contact form in order to reduce the shock vibration. By studying the mechanism of damping layer vibration and noise reduction, a method of reducing vibration and noise by adding damping material layer on the surface of roller and changing rigid contact into elastic contact is put forward. The results show that the vibration energy and noise of the centrifuge are reduced by more than 60% and the noise is reduced by more than 10 days, and the effect of reducing vibration and noise is very remarkable.
【作者单位】：江苏大学振动噪声研究所;
【基金】：教育部博士点基金项目(20103227110009) 江苏省普通高校研究生科研创新计划项目(CXLX12-0632)
【分类号】：TU473.1

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