Applied Acoustics 139 (2018) 1–7 Contents lists available at ScienceDirect Applied Acoustics journal homepage: www.elsevier.com/locate/apacoust Experimental investigation on the noise reduction of an axial piston pump using free-layer damping material treatment a a b, a b b c Junhui Zhang , Shiqi Xia , Shaogan Ye , Bing Xu , Wei Song , Shiqiang Zhu , Hesheng Tang , Jiawei Xiang State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China Ocean College, Zhejiang University, Zhoushan 316021, China College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325000, China ARTIC L E I NF O ABSTRAC T Keywords: Discrete-frequency tones at integral multiple of the pumping frequency are often the main contributor to the Discrete-frequency tone noise of axial piston pumps. It is an eﬀective method to reduce the noise by suppressing the discrete-frequency Free-layer damping tones. In this study, the most dominant discrete-frequency tone of an axial piston pump was suppressed using Noise reduction free-layer visco-elastic damping material treatment. The noise and vibrations of the axial piston pump were Axial piston pump experimentally measured and analyzed at several steady-state operating conditions. Dramatic reductions in the nd noise and vibrations were found. In particular, the
Applied Acoustics – Elsevier
Published: Oct 1, 2018
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