The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2021
Filed:
Jul. 09, 2020
University of Shanghai for Science and Technology, Shanghai, CN;
Xi Lu, Shanghai, CN;
Hanguang Liu, Shanghai, CN;
Lei Tian, Shanghai, CN;
Hong Wang, Shanghai, CN;
Jiawei Huang, Shanghai, CN;
University of Shanghai for Science and Technology, Shanghai, CN;
Abstract
To solve the technical problem of the incapacity to perform a quantitative matching design of residual compressive stress in the process of prior structural cold working-residual compressive stress design, the invention provides a method of structural cold working-residual compressive stress distribution quantitative matching design, characterized by treating the fatigue strength of a mechanical structure and parts as a field, and matching a structural stress field and a fatigue strength field organically, to quantitatively match the residual compressive stress in conjunction with characteristics of the cold working process. The method specifically includes determination of the maximum stress amplitude and a gradient distribution thereof at a dangerous position of the structure, determination of an ideal fatigue strength distribution of the dangerous cross-section of the structure, determination of a fatigue strength field according to curves of end quenching tests for material and a requirement for heat treatment, determination of the limit of the residual compressive stress according to characteristics of the structural cold working process, and determination of an actual residual compressive stress distribution of the dangerous cross-section in conjunction with cold working and the fatigue strength distribution.