空心圆柱形金属橡胶非成型向阻尼特性理论研究及参数识别

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (4) : 243-249.

论文

张彬1，任志英1，白鸿柏1，陈其胜1，路纯红2

作者信息 +

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

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

Author information +

文章历史 +

摘要

金属橡胶因其优异的性能被广泛用于解决工程中的振动问题，而目前对金属橡胶非成型方向的研究较少。制备了2.5 g/cm3，3.0g/cm3，3.2g/cm3，3.5g/cm3四种密度的金属橡胶，通过材料试验机对其进行1Hz～4Hz的正弦加载试验，获得了力-位移曲线。分析了成型方向和非成型方向动态压缩机理，以等效损耗因子为评价指标分析了加载频率和密度对其阻尼特性的影响，最后用参数分离法建立了非成型方向的阻尼模型,用最小二乘法进行了参数识别。结果表明金属橡胶具有各向异性，不同频率下，金属橡胶非成型向的损耗因子相差较小，随着金属橡胶密度的增加，损耗因子呈下降趋势，相较于成型方向，非成型方向具有更大的动态刚度，其阻尼性能在低频段受频率变化影响小，受密度影响大。

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.

导出引用

张彬1，任志英1，白鸿柏1，陈其胜1，路纯红2. 空心圆柱形金属橡胶非成型向阻尼特性理论研究及参数识别[J]. 振动与冲击, 2021, 40(4): 243-249

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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