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Title: Heterogeneous Ultrasonic Shot Peening: Experiment and Simulation
Author: Micoulaut Retraint Viot François
Source: Conf Proc: ICSP-9 (pg 119-124)
Publication year 2005
Document number: 2005061
Number of pages: 6
Abstract:
ABSTRACT
We study the behaviour of an ultrasonic shot peening process from two viewpoints: a) an experimental setup made of a chamber with a sonotrode (frequency 20kHz, amplitude
25um) and shot of diameter 3mm and b) a Molecular Dynamics simulation of a model of inelastic hard spheres that are fluidized by a vibrating bottom wall. The simulation cell
has the same characteristics and parameters as the experimental setup. It is found that the impact profile on the sample depends strongly on the value of the particle side
wall restitution coefficient cw and a heterogeneous distribution of impacts on both the sample and the sonotrode is obtained with decreasing cw. We compute within this model
impact parameters such as impact angle, impact velocity, etc. and compare them with our experimental findings.
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