Paper Title:
A Kinematic Hardening Finite Elements Model to Evaluate Residual Stresses in Shot-Peened Parts, Local Measurements by X-Ray Diffraction
  Abstract

Experimental analysis can be very costly and time consuming when searching for the optimal process parameters of a new shot-peening configuration (new material, new geometry of the part…). The prediction of compressive residual stresses in shot-peened parts has been an active field of research for the past fifteen years and several finite elements models have been proposed. These models, although they give interesting qualitative results, over-estimate, most of the time, the level of the maximal compressive stresses. A better comprehension of the phenomena and of the influence of the parameters used in the model can only carry a notable improvement to the prediction of the stresses. The fact that the loading path is cyclic and is not radial led us to think that a model including kinematic hardening would be better adapted for the modelling of shot peening. In this article we present the results of a simulation of a double impact for several constitutive laws. We study the effect of the chosen constitutive law on the level of residual stresses and, in particular, we show that kinematic hardening, even identified on the same tensile curve than isotropic hardening, leads to lower stress levels as compared with isotropic hardening. Furthermore, the overall shape of the stress distribution within the depth is significantly different for the two types of hardening behaviour. Further, in order to check the modelisations, local measurements were carried on with X-ray diffraction on a large size impact and correlated with the topography of the impact.

  Info
Periodical
Materials Science Forum (Volumes 524-525)
Edited by
W. Reimers and S. Quander
Pages
161-166
DOI
10.4028/www.scientific.net/MSF.524-525.161
Citation
C. Ould, E. Rouhaud, M. François, J. L. Chaboche, "A Kinematic Hardening Finite Elements Model to Evaluate Residual Stresses in Shot-Peened Parts, Local Measurements by X-Ray Diffraction ", Materials Science Forum, Vols. 524-525, pp. 161-166, 2006
Online since
September 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dulce Maria Rodrigues, Fernando V. Antunes, R. Branco
Abstract:Plasticity Induced Crack Closure (PICC) is an important fatigue phenomenon affecting crack growth under cyclic loading, which makes important...
113
Authors: Ke Chen, Jian Ping Lin, Mao Kang Lv, Li Ying Wang
Abstract:With the increasing use of finite element analysis method in sheet forming simulations, springback predictions of advanced high strength...
200
Authors: Hong Ping Jin, Wen Yu Yang, Lin Yan
Abstract:In this study, we have used the FE method to investigate the effect of in-plane residual stress and strain-hardening exponent on the indenter...
97
Authors: Noraishah Mohamad Noor, Haryanti Samekto, Ahmad Razlan Yusoff, Rasool Mohideen, Nazrul Idzham Kasim, Nurulhisham Musa, Mohd Azam Musa, Azalan Mohamed Ibrahim, Wan Ahmad Najmuddin Wan Saidin
Abstract:The elastic relaxation behavior of dual phase steel DP800 is studied in this investigation, based on experimental and numerical methods the...
109