A quantitative analysis on the energy dissipation mechanism of the non-obstructive particle damping technology
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- A quantitative analysis on the energy dissipation mechanism of the non-obstructive particle damping technology
- 发表刊物：
- Journal of Sound and Vibration
- 摘要：
- The non-obstructive particle damping (NOPD) technology has been recently developed from particle damping and impact damping technologies. In this paper, a quantitative analysis of the dissipation mechanism of NOPD based on a statistical theory is investigated for the first time to our knowledge. Under high-frequency vibrations, the dense granular motion of NOPD is very similar to turbulence. Thus, Kolmogorov’s hypothesis in turbulence is adopted to describe the energy spectral density and velocity correlation function of the particles in the NOPD technology. It is shown that the NOPD’s mean energy dissipation (per unit mass) increases with either the granular diameter or the volume ratio of the dense granular flow. The quantitative model for the NOPD technology presented in the paper should be useful in possible engineering applications of vibration reduction.
- 合写作者：
- Zhiyuan Cui, Jiu Hui Wu, Hualing Chen, Dichen Li
- 卷号：
- Vol.330, No.11
- 页面范围：
- 2449-2456
- 是否译文：
- 否
- 发表时间：
- 2011-03-23