Finite element modelling of shot peening process: Prediction of the compressive residual stresses, the plastic deformations and the surface integrity

Parametric study on single shot peening by dimensional analysis method incorporated with finite element method

“…It has been widely used in many manufacturing sectors like the aerospace and automobile industries to improve the reliability of structures [6,7]. The SP process can be seen as a cold working process at room temperature in which small spherical balls are employed to impact a work-piece.…”

“…With the elastic-plastic interaction between the work-piece and the shots, compressive residual stress is generated near the surface of the work-piece. In recent years, many analytical and numerical models, with which the residual stress, the surface integrity and the influence of parameters can be predicted, have been applied to analyze the SP process to take advantage of advancements in computer technology [5,6,[8][9][10][11][12][13][14][15]. The effects of some SP parameters have been investigated [2,[16][17][18][19][20][21], however, little research has focused on systematic analysis of dimensionless parameters in SP process, which is important for clarifying the influence of process conditions.…”

Finite element modelling of shot peening process- A progress overview

“…With the appearances of powerful finite element software such as ABAQUS, ANSYS and NASTRAN, attention was focused on numerical simulation of shot peening process [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Such a simulation method provides a cheap and easy way to study the dynamic impact of a shot with high velocity, the double non-linearity of the problem due to the contact of two bodies and the elastic-plastic behaviour of the target, etc.…”

“…It is worth noting that although above works [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] provide a powerful method for establishing quantitative relationships between shot and target parameters and residual stress characteristics, FE methods could not still simulate a stream of discrete shots impacting on a target. Recently, discrete element (DE) method has been adopted to simulate shot peening process by Han et al [39][40][41].…”

“…Frija et al [27] numerically studied the simulation method of the shot peening process by using energy equivalence between the dynamic impact and a static indentation of a peening shot in the treated surface. Their model is able to evaluate the residual stress, the plastic deformation profiles and the surface damage.…”