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Impact velocity and distribution in ultrasonic shot peening

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Abstract

We study the dynamic of shot during an ultrasonic shot peening process from two aspects. The first consists in running various calculations of spheres placed in a cylindrical chamber (radius 35 mm, height 40 mm) and propelled by a sonotrode (frequency 20 kHz, amplitude 25 μm). This allows for a better understanding of the minimal peening time needed to reach a stationary regime. The second aspect deals with the relationship between spatial impact distributions and normal impact velocities. Results show that after a specific peening time, initial conditions such as shot position and velocity have no influence on the calculation output. We also found that the surface impact frequency on a peened sample placed on top of a cylindrical or parallelepiped chamber with same inner volumes does not vary much, and that low velocity impacts are mainly concentrated at the edge of the chamber.
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Dates and versions

hal-02613847 , version 1 (20-05-2020)

Identifiers

  • HAL Id : hal-02613847 , version 1

Cite

Jawad Badreddine, Matthieu Micoulaut, Emmanuelle Rouhaud, Delphine Retraint, Manuel François. Impact velocity and distribution in ultrasonic shot peening. International Conference on Shot Peening - ICSP11, Sep 2011, South Bend, United States. ⟨hal-02613847⟩
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