摘要
该文针对压缩机的振动,基于声学黑洞原理(ABH)设计了一种新型减振结构,实现了对能量的吸收,从而起到减振降噪作用。实验结果表明,改进的ABH减振器的能量聚焦能力相比圆台式减振器提升90%;不同材料的ABH结构,减振效果存在明显差异,聚乙烯ABH减振器中低频段内有更显著的能量聚焦效果;在杨氏模量、泊松比相等的情况下,质量越小,该材料的能量聚焦能力越强。在压缩机振动分析中,铝合金制减振器和聚乙烯制减振器的减振比例分别为7.34%和8.80%,聚乙烯材质的减振效果优于铝合金材质。
In this paper,a new type of vibration reduction structure is designed based on the principle of acoustic black hole(ABH,acoustic black hole)for the vibration of compressor,which can absorb energy and reduce vibration and noise.The experimental results show that the energy focusing ability of the improved ABH damper is improved by 90%compared to the truncated cone damper.There are obvious differences in the damping effect of ABH structures with different materials.The polyethylene ABH damper has more significant energy focusing effect in the middle and low frequency bands,and the aluminum alloy ABH damper has better focusing effect in the high frequency band than in the low frequency band.In the case of equal Young’s modulus and Poisson's ratio,the smaller the mass,the stronger the energy focusing ability of the material.Therefore,in the vibration analysis of the compressor,the vibration reduction ratio of the aluminum alloy damper and the polyethylene damper is 7.34%and 8.80%respectively;the vibration reduction effect of polyethylene material is better than that of aluminum alloy material.
作者
许江涛
刘创
秦育彦
徐伟伟
张海涛
XU Jiangtao;LIU Chuang;QIN Yuyan;XU Weiwei;ZHANG Haitao(College of Mechanical Engineering,Nanjing Institute of Technology,Nanjing 211167,China;College of Mechanical Engineering,Nanjing Vocational University of Industry Technology,Nanjing 210023,China)
出处
《实验技术与管理》
CAS
北大核心
2023年第7期109-115,共7页
Experimental Technology and Management
基金
江苏省工业感知及智能制造装备工程研究中心项目(ZK21-05-06)
国家自然基金面上项目(51775260)
江苏省大创基金项目(202111276015Z,SJCX21_0926)。
关键词
声学黑洞
动力学特性
减振设计
阻尼层
压缩机
acoustic black hole
dynamic property
anti-vibration design
damping layer
compressor
