Impact of parametric resonance on the contacting surfaces fracture mechanism during friction and wear-out.
Journal Title: Metallurgical and Mining Industry - Year 2018, Vol 10, Issue 3
Abstract
In this article the authors researched the parametric resonance impact in the moving contacting surfaces interaction region on friction and wear-out during distortion and wave processes course in front of the moving die block. The authors state that as the parametric vibrations occur on the contacting surfaces, there is a need to reason their occurrence, and for this reason there is a physical analogue offered, in which there is nonlinear unlubricated friction between the interacting parts, which depends on velocity of their slippage – the source of parametric (auto) vibrations on the segment in front of the movable part. For this reason they used the methods, allowing to determine the length of the part surface distorted segment, the number of half waves on the segment, and we applied the specified methods of distortion microasperities altitude computation as well. As a result the researchers found out that the reason of enhanced interacting parts wear-out is the rise of the parts diffusion layers amplitude vibrations due to parametric resonance effect, and this fact is the scientific novelty of this publication. The above allows to achieve greater reliability at determining the distortion microasperities using the exact expression for the bending line of the beam curvature, and also taking into account nonlinear dependence between longitudinal and lateral distortions of the virtual beam long axis due to the fact that it lost longitudinal stability.
Authors and Affiliations
A. D. Uchitel, Yu. A. Malinovskyi, G. V. Danilina, Ye. V. Omelchenko
Keywords
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