Stress distribution of coated film with a range of coated film thickness and elastic properties under a single EHL operating condition |
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Authors: | Toshikazu Fujino Katsumi Iwamoto Kentaro Tanaka Masayuki Shima |
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Affiliation: | aGraduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 2-1-6, Etchujima, Koto-ku, Tokyo 135-8533, Japan;bDepartment of Marine Electronics and Mechanical Engineering, Tokyo University of Marine Science and Technology, 2-1-6, Etchujima, Koto-ku, Tokyo 135-8533, Japan |
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Abstract: | In recent years, the techniques improving sliding performances have progressed by using coated films possessing superior tribological properties, to reduce the failures of the mechanical elements. Those techniques are often used under severe conditions such as elastohydrodynamic lubrication (EHL). In this paper, numerical three-dimensional analysis of the maximum shear stress applied into the coated film and substrate under a single EHL operating condition was performed with a range of coated film thickness and elastic properties. The strength of coated film as one of those techniques was evaluated numerically, resulting in an optimum design of coated film. As a result, coated films with a larger value of thickness and a smaller modulus of elasticity than that of substrate are preferable. |
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Keywords: | Optimum design Stress distribution Oil film thickness Coated film EHL Failure |
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