On the loading and unloading of metal-to-metal seals: A two-scale stochastic approach
On the loading and unloading of metal-to-metal seals: A two-scale stochastic approach
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关于金属对金属密封件的加载和卸载：二尺度随机方法
DOI：
10.1177/1350650118755620
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
A. Almqvist
中科院分区：
文献类型：
--
作者：
F. Pérez;R. Larsson;Egbert van Riet;A. Almqvist
在操作过程中，金属对金属密封件的配合表面通常会经历显着的塑性变形，这反过来又会对其性能产生有益的影响。例如，在之前的研究中，已经表明塑性变形可以在卸载过程中提供更好的密封。然而，这些研究确实只考虑了不切实际的小领域的流动。因此，这可能是尺寸效应，在具有更大域的实际情况中并不明显。在本文中，我们开发了一种模型，可以同时处理实际尺寸的密封域和表面形貌的精细细节。更准确地说，我们构建了一个双尺度模型，其中全局尺度代表密封域，局部尺度的精细细节的影响由随机元素表示。通过这种随机两尺度模型，我们表明，当考虑实际尺寸的密封域时，与塑性变形相关的有益效果也仍然存在。
During operation, the mating surfaces of a metal-to-metal seal typically undergo significant plastic deformation, which in turn can have beneficial effect on its performance. In previous studies, it has, for instance, been shown that plastic deformation can provide for better sealing during unloading. Those studies did, however, only consider flow through unrealistically small domains. Therefore, it is possible that this might be a size effect, which would not be apparent in a real situation with a much larger domain. In this paper, we develop a model which can handle real-sized seal domains at the same time as fine details of the surface topography. More precisely, we construct a two-scale model, in which the global scale represents the seal domain and where the influence of the fine details at the local scale are represented by a stochastic element. By means of this stochastic two-scale model, we show that the beneficial effect associated with the plastic deformation persists also when real-sized seal domains are considered.
使用元模型优化弹流润滑 (EHL) 表面形貌的多尺度方法
影响因子：
3.9
作者：
De Boer G
通讯作者：
De Boer G
二维 EHL：倾斜瓦轴承的三维形貌
影响因子：
6.2
作者：
De Boer G
通讯作者：
De Boer G