Transactions of Materials and Heat Treatment

Title：Bending deformation behavior on pre-stressed shot peening based on energy equivalence

Authors： Wang Tong Wang Wanli Xu Xiaojie Shi Jinke Yang Qian Zhang Ting Yang Yi

Unit： Xi′an Mordern Control Technology Research Institute

KeyWords： 2024 aluminum alloy shot peening forming pre-stress energy equivalence thin-plate bending

ClassificationCode：V261.7

year,vol(issue):pagenumber：2025,50(7):74-81

Abstract：

For the problems that the pre-stressed shot peening forming process involved complex elastic-plastic deformation,and it was difficult to directly establish the mapping relationship between shot peening parameters and deformation response of parts, the deformation behavior of pre-stress shot peening was investigated from the perspective of energy equivalence, and a shot peening bending deformation calculation model for flat specimen was established. In this model, the deformation energy of shot-peened plate was determined by the total kinetic energy input by the shot impact and the correction coefficient, which comprehensively considered the influence of oblique impact, shot interaction and shot overlap in the actual forming process. The results show that the square of curvature radius for shot-peened plate is inversely proportional to the dent coverage ratin and the average input energy of individual peening shot. In addition, the greater the pre-stress, the greater the proportion of the kinetic energy input by the shot that is converted into plate deformation energy, and the correspondingly larger the curvature radius. Thus, the research findings can be further used to guide the actual forming and manufacturing of large thin-walled parts.

Funds：

作者简介：王桐（1989-），男，博士，工程师 E-mail：1013956651@qq.com

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