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首页> 外文期刊>Proceedings of the institution of mechanical engineers >A numerical-analytical approach to predict the effects of shot peening on the fatigue performance of the nickel-based super alloy Waspaloy
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A numerical-analytical approach to predict the effects of shot peening on the fatigue performance of the nickel-based super alloy Waspaloy

机译：数值分析方法预测喷丸处理对镍基超级合金Waspaloy疲劳性能的影响

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摘要

This paper presents a combined numerical-analytical approach to consider the effects of shot-peening surface treatment on the fatigue performance of metallic parts. This approach has the advantage to take into account both the favorable and unfavorable shot-peening effects. It is constituted by three principle steps: (i) a 3D finite element active simulation of the shot-peening process; (ii) prediction of the change of the shot-peened surface properties during the applied cyclic loading; and (iii) prediction of the change of the fatigue performances for both limited and high number of cycles. An application has been carried out on the aeronautical-based nickel super-alloy material, Waspaloy. The obtained results are in good correlation with available experimental investigations results and physically consistent. This proposed approach can be used to determine the optimum shot-peening conditions.
机译：本文提出了一种结合数值分析的方法来考虑喷丸表面处理对金属零件疲劳性能的影响。这种方法的优点是要考虑到喷丸强化的有利和不利影响。它由三个主要步骤构成：（i）喷丸处理的3D有限元主动模拟； （ii）预测施加的循环载荷过程中喷丸处理后的表面性能的变化； （iii）预测有限次数和高次数的疲劳性能的变化。已经在航空基镍超级合金材料Waspaloy上进行了应用。获得的结果与可用的实验研究结果具有良好的相关性，并且在物理上是一致的。该建议的方法可用于确定最佳喷丸强化条件。

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