Experimental Study on the Mn-Based Damping Alloys

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Yan, Zhong^1 ; Shan, Peng^2 ; Hongjun, Sun^1

Shanghai Marine Equipment Research Institute, Shanghai

SH021, China^1

Navy Representative Office, Shanghai No.704 Research Institute, Shanghai

SH021, China^2

关键词: Centrifugal fans;    Damping capacity;    Damping loss factor;    Damping parameters;    Damping structure;    Dynamic characteristics;    Hot processing;    Vibration acceleration;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/3/032006/pdf
DOI  :  10.1088/1755-1315/233/3/032006

来源: IOP

【 摘 要 】

More and more attention has been paid to Mn-based damping alloy because of its excellent cold and hot processing properties, high damping performance, and good tensile strength. In this paper, the influence of temperature, frequency and stress on the damping capacity of the damping alloy is analyzed by using DMA method, and the relations between damping parameters and temperature and frequency are obtained. Taking a Marine centrifugal fan as the parent type, the Mn-based damping alloy volute is designed, the dynamic characteristics of Mn-based damping alloy volute are analyzed, and the influence of the damping structure on the vibration of the whole structure is studied. The results show that the mechanical properties of the Mn-based damping alloy are excellent, the damping loss factor is 10 times higher than the Q235 material, and the vibration acceleration of the volute and the mmachine feet can be reduced more than 5dB by using the Mn-based damping alloy. Therefore the vibration reduce can be realized by using Mn-based damping alloy.