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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Finite element modeling of ultrasonic and conventional shot peening: A comparison of the effect of both processes on surface conditions
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Finite element modeling of ultrasonic and conventional shot peening: A comparison of the effect of both processes on surface conditions

机译：超声波和常规射击喷丸的有限元建模：两种过程对表面条件效果的比较

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摘要

This paper presents three-dimensional-dynamic finite element simulations of both conventional and ultrasonic peening processes. The proposed models have the advantages of being very close to reality and of taking into account the majority of the influencing factors linked to the processing parameters, the shot-target contact conditions and the monotonic-cyclic elastic-plastic behavior law coupled to the damage of the treated material. The implementations of these simulations allow predicting the changes of the main affecting fatigue surface properties, which are: (i) the in-depth profiles of compressive residual stresses and the Von Mises equivalent plastic strains, (ii) the peened-surface damage values (iii) and the micro-geometrical surface irregularity patterns. Applications have been carried out on two materials: the AISI 316L and the AISI 2205. The comparisons of the computed results to the available experimental investigations show good correlations. These results have been used and exploited to analyze and to compare the two studied peening processes.
机译：本文介绍了常规和超声波喷丸过程的三维动态有限元模拟。拟议的模型具有非常接近现实的优点，并考虑到与加工参数相关的影响因素，射击目标接触条件和单调环状弹性塑料行为定律与损坏相连经处理的材料。这些模拟的实施允许预测主要影响疲劳表面性质的变化，这是：（i）压缩残余应力的深度曲线和von误差等效塑料菌株（ii）喷丸表面损伤值（ iii）和微观几何表面不规则图案。应用已在两种材料上进行：AISI 316L和AISI 2205。计算结果与可用实验研究的比较显示出良好的相关性。这些结果已被使用和剥削分析并比较两种研究的喷丸过程。

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