Abstract
A novel procedure to simulate ultrasonic cavitation peening is introduced. The surface profile of pits formed by ultrasonic cavitation peening are measured with atomic force microscopy, and impact loads are inversely constructed from the profiles using an inverse finite element (FE) method. The residual stress by ultrasonic cavitation peening was evaluated by analyzing 3D FE simulation results where the impact loads are applied in a random sequence. From the simulation, it was found that only the high energy impacts are mainly responsible for the residual stress. Also, the experimental results show that the present simulation based on the pit profile adequately predicts growth of the residual stress field with increasing peening time.
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