通过产生预应力改变激光冲击加工过程中产生的残余应力

IF 0.4 Q4 ENGINEERING, MECHANICAL

Journal of Machinery Manufacture and Reliability Pub Date : 2024-02-08 DOI:10.1134/S1052618823100126

G. Zh. Sakhvadze

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引用次数: 0

摘要

我们建立了一个有限元模型，在该模型中，激光冲击加工过程中会在材料中产生弹性初步应力。模型结果与实验结果进行了比较，结果表明两者的收敛性令人满意。结果表明，当最终压缩残余应力相对于屈服强度在 [-20%, -100%]范围内时，初步应力和压缩残余应力之间存在线性关系。已确定的是，材料中存在初步拉应力会导致最终压残余应力值及其渗透深度更高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Modifying Residual Stresses Occurring under Laser Shock Processing through the Generation of Preliminary Stresses

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Modifying Residual Stresses Occurring under Laser Shock Processing through the Generation of Preliminary Stresses

A finite element model has been developed, in which in the course of laser shock processing an elastic preliminary stress is generated in the material. The results are compared with the experimental results, which shows their satisfactory convergence. It is shown that there is a linear relationship between preliminary stresses and compressive residual stresses in the case when the final compressive residual stresses are in the range of [–20%, –100%] with respect to the yield strength. It has been established that the presence of preliminary tensile stresses in the material leads to a higher value of the final compressive residual stresses and the penetration depths thereof.

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来源期刊

Journal of Machinery Manufacture and Reliability ENGINEERING, MECHANICAL-

CiteScore

0.80

自引率

33.30%

发文量

期刊介绍： Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.