Transient dynamic finite element simulation for prediction of surface integrity induced by waterjet peening

This paper aims to develop and validate the transient dynamic finite element three-dimensional simulation of a waterjet peening process to predict surface properties (residual stresses, plastic strains, surface roughness, and superficial damage). The finite-element model considers an impingement of...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part L, Journal of materials, design and applications Journal of materials, design and applications, 2020-01, Vol.234 (1), p.105-119
Main Authors: Amri, Rihem, Laamouri, Adnen, Manchoul, Sondes, Fathallah, Raouf
Format: Article
Language:English
Subjects:
Aluminum base alloys
Computer simulation
Contact pressure
Damage
Droplets
Finite element method
Impact loads
Impact velocity
Mathematical models
Predictions
Process parameters
Properties (attributes)
Residual stress
Simulation
Surface properties
Surface roughness
Water jet peening
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper aims to develop and validate the transient dynamic finite element three-dimensional simulation of a waterjet peening process to predict surface properties (residual stresses, plastic strains, surface roughness, and superficial damage). The finite-element model considers an impingement of multisets of droplets, which strike the treated surface by impact pressures over the corresponding contact regions at high velocities. The impact pressures and their durations are modelled by using the liquid impact theory combined with an impact velocity law depending on the main parameters of the process. The behavior law of the material is an elastoviscoplastic law coupled to the Johnson–Cook damage criterion. The effectiveness of this simulation is discussed in two cases: (i) a linear mono-set of droplets and (ii) multisets of droplets using the experimental results of a waterjet-peened Al7075-T6 aluminum alloy. The predictive results of surface properties obtained by simulation with multi-sets of droplets appear more realistic than those obtained by simulation with a single set of droplets and more close to the experimental surface properties.
ISSN:1464-4207
2041-3076
DOI:10.1177/1464420719874389