Method of structural cold working-residual compressive stress distribution quantitative matching design
US11168380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2020 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jul 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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 residua…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.