首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >Behavior of a Horizontal Fluid Filled Crack under Moving Hertzian Load
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Behavior of a Horizontal Fluid Filled Crack under Moving Hertzian Load

机译:赫兹载荷作用下水平充填裂纹的行为

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Numerical analysis is presented for a fluid filled subsurface crack in an elastic half plane loaded by Hertzian contact stresses. The opening volume of the horizontal Griffith crack is fully occupied by an incompressible fluid. In the presence of friction, a moving Hertzian line contact load is applied at the surface of the half plane. The stress intensity factors at the tips of the fluid filled crack are analyzed on condition that the change of the opening crack volume vanishes due to the fluid incompressibility. The method used is that of replacing the crack by a continuous distribution of edge dislocations. As a cycle of rolling can be viewed as shifting the Hertzian contact stresses across the surface of the half plane, the results of this analysis may prove useful in the prediction of rolling fatigue of an elastic rolling body containing a soft inclusion.
机译:给出了由赫兹接触应力加载的弹性半平面中充满流体的地下裂缝的数值分析。水平格里菲斯裂缝的开口体积被不可压缩的流体完全占据。在存在摩擦的情况下,移动的赫兹线接触载荷施加在半平面的表面。在由于流体不可压缩而导致开裂裂纹体积的变化消失的情况下,分析了在充满流体的裂纹尖端处的应力强度因子。所使用的方法是通过边缘位错的连续分布来替换裂纹。由于可以将滚动周期视为在半平面的整个表面上移动赫兹接触应力,因此该分析的结果可证明对预测包含软夹杂物的弹性滚动体的滚动疲劳有用。

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