Journal ArticleDOI
Prediction of plastic deformation and residual stresses induced in metallic parts by shot peening
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In this article, an extension of this model by taking into account the effect of friction, the angle of impingement, and the hardness ratio is presented, which shows a good agreement with the residual stresses obtained by X-ray diffraction analysis.Abstract:
A model has been developed by Guechichi et al. and improved by Khabou et al. to predict residual stresses and plastic deformation induced by shot peening in metallic parts. The major controlling factors were taken into account. The effect of the tangential friction between the shot and the treated material, the shot hardness to material hardness ratio, and the angle of impingement were not taken into account. This paper presents an extension of this model by taking into account the effect of friction, the angle of impingement, and the hardness ratio. The material is characterised by using the model of Khabou et al. as extended by Hamdane in the case of triaxial loading. Application on a plate made of Udimet 720 shows a good agreement with the residual stresses obtained by X-ray diffraction analysis. Calculations made using different coefficients of friction and angles of impingement show a good correlation with the experimental data available in the literature.read more
Citations
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An evaluation of shot peening, residual stress and stress relaxation on the fatigue life of AISI 4340 steel
TL;DR: In this article, the authors evaluated the fatigue life of AISI 4340 steel, used in landing gear, under four shot peening conditions and found that relaxation of the residual stress field occurred due to the fatigue process.
Journal ArticleDOI
Finite element modelling of shot peening process: Prediction of the compressive residual stresses, the plastic deformations and the surface integrity☆
TL;DR: In this paper, a numerical simulation of the shot peening process using finite element method is presented, where the majority of the controlling parameters of the process have been taken into account.
Journal ArticleDOI
Comparison between shot peening and surface nanocrystallization and hardening processes
K. Dai,Leon L. Shaw +1 more
TL;DR: In this article, a finite element modeling is performed to provide quantitative description of the differences between the two processes and the results show that the kinetic energy in the SNH process is typically 180 times larger than that in shot peening, and the deformation layer is about 10 times thicker.
Journal ArticleDOI
Finite element modeling of the surface roughness of 5052 Al alloy subjected to a surface severe plastic deformation process
TL;DR: The surface of 5052 Al alloy plates is severely deformed via multiple impacts by high-velocity tungsten carbide/cobalt (WC/Co) balls in a surface nanocrystallization and hardening (SNH) process.
Journal ArticleDOI
An analytical approach to relate shot peening parameters to Almen intensity
TL;DR: In this article, a model for predicting Almen intensity based on an analytical model for shot peening residual stresses was proposed, and theoretical results for different sets of peening parameters were consistent with published experimental results and revealed that each combination resulted in a different through thickness residual stress distribution.
References
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Journal ArticleDOI
The Determination of Static and Dynamic Yield Stresses Using a Steel Ball
TL;DR: In this paper, the static and dynamical yield stress of the material of a thick steel plate may be estimated by pressing and by dropping a hard steel ball on a plane surface of the plate which has been ground and then polished.
Journal ArticleDOI
Correlation of Almen arc height with residual stresses in shot peening process
W. Cao,Raouf Fathallah,L. Castex +2 more
TL;DR: In this paper, the deformation of shot peened Almen strips with increasing shot peening time, and their subsequent changes after the fixing screws are removed, are experimentally investigated and modelled.
Journal ArticleDOI
Some useful results in the tangentially loaded hertzian contact problem
A Sackfield,D.A. Hills +1 more
TL;DR: In this article, the authors reviewed the literature for the problem of two contacting bodies, suffering Hertzian contact and with an assumed proportional shear, and the general case of the proble...
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On a simplified inelastic analysis of structures
J. Zarka,J.J. Engel,G. Inglebert +2 more
TL;DR: In this article, the derivation of cyclic constitutive relations during inelastic regime where hardening, softening and creep can occur, and the development of the eventual periodical state in the structure during cyclic thermodynamical loadings are considered.
Journal ArticleDOI
Quick analysis of inelastic structures using a simplified method
G. Inglebert,J. Frelat +1 more
TL;DR: In this article, a new transformed parameter Y linked to both the local material behaviour and structural coupling is introduced to find limit loads or stabilized cyclic response to cyclic loads, which leads to an easy solution.