Quantitative research method for inner wall abrasion of thick-wall cylinder

Abstract

The invention discloses a quantitative research method for an inner wall abrasion of a thick-wall cylinder. The method takes temperature and a contact pressure with maximum proportion in an interaction as an entry point, takes the root cause of a mechanical abrasion, i.e., a mechanical movement as a research object, and uses frictional heats generated thereby to contribute an incompletely cooled thick-wall cylinder heat transfer model, so as to obtain a global temperature distribution of the corrected inner wall of the thick-wall cylinder, and obtain a global ablative abrasion amount of the inner wall of the thick-wall cylinder through a degradation mathematical model of ablative abrasion materials; and the method takes the root cause of the ablative abrasion, i.e., temperature as a research object, and uses the heat softening and heat melting of the inner wall of the thick-wall cylinder inner wall generated thereby to update corresponding material characteristics of the inner wall ofthe thick-wall cylinder, so as to obtain a corrected global contact pressure distribution of the inner wall of the thick-wall cylinder, and obtain a global mechanical abrasion amount of the inner wallof the thick-wall cylinder through a degradation mathematical model of mechanical abrasion materials. According to the quantitative research method for the inner wall abrasion of the thick-wall cylinder, a global abrasion amount of the inner wall of the thick-wall cylinder can be obtained, and the degradation process of a thick-wall cylinder material can be quantitatively researched.

Description

technical field [0001] The invention belongs to the field of friction and wear, and in particular relates to a quantitative research method for inner wall wear of a thick-walled cylinder. Background technique [0002] The wear of the inner wall of the thick-walled cylinder is an unavoidable problem during the relative movement of the shaft-drum device. There are two forms of wear, namely ablation wear and mechanical wear, and there is a complex interaction between the two causes. The existing research methods mainly use instruments to measure the ablation wear of thick-walled cylinders. Firstly, it is difficult to obtain the global dynamic wear amount of thick-walled cylinders. Some research methods have certain limitations, and there is a lack of research on the mutual promotion mechanism of mechanical wear and ablation wear. This method takes the temperature and contact pressure with the largest specific gravity in the interaction as the entry point, takes the fundamental...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a quantitative research method for the wear of the inner wall of a thick-walled cylinder, which solves the lack of sources of material degradation of the thick-walled cylinder in the prior art, and the research on mechanical wear and ablation wear is carried out separately, and also solves the problem of Difficult measurement of global dynamic wear of thick-walled cylindrical materials

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