&nbsp;Experimental modeling and parameter identification of non-forming damping characteristics of metal rubber

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (4) : 243-249.

Experimental modeling and parameter identification of non-forming damping characteristics of metal rubber

ZHANG Bin1, REN Zhiying1, BAI Hongbai1, CHEN Qisheng1, LU Chunhong2

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Abstract

Metal rubber is widely used to solve vibration problems.However, the research on the non-forming direction of metal rubber is few.Metal rubber with densities of 2.5 g /cm3, 3.0 g/cm3, 3.5 g/cm3 and 4.0 g/cm3 were prepared.Sinusoidal loading tests of 1-4 Hz were carried out, and the force-displacement curves were obtained.The dynamic compression mechanism of the two directions was analyzed.The effect of loading frequency and density on damping characteristics was analyzed using equivalent loss factor.The damping model of non-forming direction was established by a parameter separation method and the parameters were identified.The results show that metal rubber has anisotropy, with the increase of the density of metal rubber, the loss factor decreases.Compared with the forming direction, the non-forming direction has greater dynamic stiffness.Its damping performance is less affected by the change of frequency and more affected by the density in the low frequency band.

Key words

metal rubber / non-forming direction / loss factor / hysteresis vibration / parameter identification

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ZHANG Bin1, REN Zhiying1, BAI Hongbai1, CHEN Qisheng1, LU Chunhong2. Experimental modeling and parameter identification of non-forming damping characteristics of metal rubber[J]. Journal of Vibration and Shock, 2021, 40(4): 243-249

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