Normal Contact Stiffness Fractal Geometric Model Based on the Gamma Distribution of Rough Joint Surface

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Abstract:

In this article, according to WenShuHua and Zhangxueniang fractal model, we point out the deficiency. Based on the fractal theory and Zhang, Wens contact stiffness fractal model, this paper puts forward Gamma distribution of rough joint surface normal contact stiffness. This paper considers micro convex body for ellipsoid, contact area for elliptic. This is slightly convex body for sphere hypothesis is more close to the actual situation. At the same time by using statistics theory, considering the contact ellipse long, short axis a and b are greater than zero, the assumption of a and b to two-dimensional Gamma distribution, it is more suitable for engineering practice.

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Periodical:

Advanced Materials Research (Volumes 760-762)

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2064-2067

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September 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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