.png){kind=icon}
返回
Similarity solutions in elastohydrodynamic bouncing
.png){kind=icon}
OA
AI
DOI：10.1017/jfm.2024.310.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
We investigate theoretically and numerically the impact of an elastic sphere on a rigid wall in a viscous fluid. Our focus is on the dynamics of the contact, employing the soft lubrication model in which the sphere is separated from the wall by a thin liquid film. In the limit of large sphere inertia, the sphere bounces and the dynamics is close to the Hertz theory. Remarkably, the film thickness separating the sphere from the wall exhibits non-trivial self-similar properties that vary during the spreading and retraction phases. Leveraging these self-similar properties, we establish the energy budget and predict the coefficient of restitution for the sphere. The general framework derived here opens many perspectives to study the lubrication film in impact problems.
Keyword:
lubrication theory
期刊
IF:
3.9
论文数:
2.0W
被引数:
9.4W
机构
引用论文
.png){kind=icon}
Intravenous cocaine, morphine, and amphetamine preferentially increase extracellular dopamine in the "shell" as compared with the "core" of the rat nucleus accumbens.与大鼠伏隔核的 “核心” 相比，静脉注射可卡因，吗啡和苯丙胺优先增加 “壳” 中的细胞外多巴胺。
OAAI
OAAI分享收藏
查看更多内容