Equivalent Method of Joint Interface Based on Persson Contact Theory: Virtual Material Method.

Clicks: 91
ID: 92261
2019
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Abstract
An accurate equivalent method of metal joint interface is of great significance to optimize the dynamic performance of the whole machine. Therefore, it is necessary to establish an accurate equivalent method of joint interface. The virtual material method is a precise equivalent method of joint interface. The traditional virtual material method is based on the M-B fractal contact theory. By modeling the contact mechanics of the joint interface, the physical properties of the virtual material are obtained separately, such as elastic modulus, Poisson's ratio and density. In this paper, Persson contact theory is used to establish the interface contact mechanics model to find the physical properties of virtual materials. The virtual material methods constructed by two theories are respectively applied to the modal simulation to obtain the natural frequencies of the joint interface. By comparing the natural frequencies obtained by modal experiment and modal simulation, it is found that the natural frequencies obtained by the virtual material method based on Persson contact theory are closer to the results obtained by the modal experiment, and the error is within 5%. The error of the natural frequencies obtained by the virtual material method based on the M-B fractal contact theory is within 10%. Therefore, the Persson contact theory can establish a more accurate equivalent method of metal's joint interface.
Reference Key
han2019equivalentmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Han, Renxiu;Li, Guoxi;Gong, Jingzhong;Zhang, Meng;Zhang, Kai;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E3150
URL
Keywords
persson contact theory equivalent method of interface virtual material method

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