方法对比
并排查看您选择的方法；存在差异的行会高亮显示。
| 弹性流体动力润滑× | Griffith断裂力学× | |
|---|---|---|
| 领域 | 制造工程 | 制造工程 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1977 | 1921 |
| 提出者≠ | Dowson, D., Higginson, G. R. | Alan A. Griffith |
| 类型≠ | Mathematical model for lubricated contacts | Theoretical model for brittle fracture and crack propagation |
| 开创性文献≠ | Dowson, D., & Higginson, G. R. (1977). Elastohydrodynamic Lubrication: The Fundamentals of Roller and Gear Lubrication. Pergamon Press. ISBN: 0-08-021710-4 | Griffith, A. A. (1921). The phenomena of rupture and flow in solids. Philosophical Transactions of the Royal Society A, 221, 163-198. link ↗ |
| 别名 | EHL, Elastohydrodynamic film, Hydrodynamic lubrication | Brittle fracture theory, Energy release rate, Linear elastic fracture mechanics |
| 相关 | 4 | 4 |
| 摘要≠ | Elastohydrodynamic lubrication (EHL) is the regime of fluid film lubrication in which elastic deformation of the surfaces plays a crucial role in maintaining a fluid layer between sliding or rolling surfaces. In applications like roller bearings and gears, the contact pressure is extremely high, causing the lubricant viscosity to increase dramatically and the surfaces to deform elastically. EHL theory, developed rigorously by Dowson and Higginson, predicts the film thickness, pressure distribution, and friction in these heavily loaded contacts. | Griffith's theory of brittle fracture explains how small flaws or cracks in materials grow unstably, leading to sudden catastrophic failure. Formulated by Alan A. Griffith in 1921 through experiments on glass fibers, this theory balances the elastic energy released by crack growth against the surface energy required to create new material surfaces. It predicts that materials fail at stresses far below their theoretical strength due to the stress concentration around pre-existing flaws. |
| ScholarGate数据集 ↗ |
|
|