Finite element modelling of shot peening process- A progress overview

Yang, Yu; Wan, Min; Zhang, W. H.

doi:10.1051/ijsmdo:2009007

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…Yang et al [13] used a 2D plane strain FEA to analyze high coverage and Almen intensity. Extensive investigations followed to further study and model the physical phenomena of multiple shot impacts at surfaces using either 2D or 3D models [5,6,[13][14][15]. In recent years, FEM-based simulation models capable of simulating the shot-peening process have been proposed that can explain and predict the correlation between the SP parameters and the process results.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Shot Size Effect on Residual Stresses through a 2D FEM Model of the Shot Peening Process

Gakias

Maliaris

Savaidis

2022

Metals

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Shot peening is a surface treatment process commonly used to enhance the fatigue properties of metallic engineering components. In industry, various types of shots are used, and a common strategy is to regenerate a portion (approximately up to 35% of the total shot mix weight) of used and worn shots with new ones of the same type. Shots of the same type do not have a constant diameter, as it is concluded by experience that the diameter variation is beneficial for fatigue life. The process of stochasticity raises the difficulty for the application of computational methods, such as finite elements analysis, for the calculation of pivotal parameters, for instance, the development of the residual stress field. In the present work, a recently developed plane strain 2D FEM model is used, which has the capability to consider various shot size distributions. With the aid of this model, it became feasible to study the effect of the shot-size distribution, its sensitivity, and to draw conclusions considering the industrial practice of using a mixture with new and worn shots. The diameter of these shot types differs significantly, and a used shot may have a diameter three times smaller than a new one. As concluded from the finite element results, which are verified from experimental measurements, a shot type with a larger diameter causes a wider valley in the stress profile, and the peak stress depth increases. Alongside the peak stress depth movement, with smaller shots, larger residual stresses are observed closer to the surface. Thus, the superimposition of many shots with variable diameters causes the development of a residual stress field with enhanced characteristics. Furthermore, this residual stress field may be further enhanced by adjusting or increasing the percentage weight of the used shots, up to ~50%.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Shot Size Effect on Residual Stresses through a 2D FEM Model of the Shot Peening Process

Gakias

Maliaris

Savaidis

2022

Metals

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“…Remarkable progress has been achieved, starting from the simulation of single shots on bodies and the formation of corresponding contact stresses as provided, e.g., in [ 7 , 8 ], the work of Zion and Johnston [ 9 ] introducing a 2D Finite Element Method-based simulation model capable to consider various shot types and Al-Hassani et al [ 10 ] considering multiple shots. Extensive investigations followed to further study and model the physical phenomena of multiple shot impacts at surfaces using either 2D or 3D models [ 3 , 4 , 11 , 12 ]. In the last decade, FEM-based simulation models have been proposed, aiming to describe the fundamental processes taking place during a shot-peening treatment and explain and predict the correlation between the SP parameters and the process results.…”

Section: Introductionmentioning

confidence: 99%

A FEM-Based 2D Model for Simulation and Qualitative Assessment of Shot-Peening Processes

et al. 2021

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Shot peening is one of the most favored surface treatment processes mostly applied on large-scale engineering components to enhance their fatigue performance. Due to the stochastic nature and the mutual interactions of process parameters and the partially contradictory effects caused on the component’s surface (increase in residual stress, work-hardening, and increase in roughness), there is demand for capable and user-friendly simulation models to support the responsible engineers in developing optimal shot-peening processes. The present paper contains a user-friendly Finite Element Method-based 2D model covering all major process parameters. Its novelty and scientific breakthrough lie in its capability to consider various size distributions and elastoplastic material properties of the shots. Therewith, the model is capable to provide insight into the influence of every individual process parameter and their interactions. Despite certain restrictions arising from its 2D nature, the model can be accurately applied for qualitative or comparative studies and processes’ assessments to select the most promising one(s) for the further experimental investigations. The model is applied to a high-strength steel grade used for automotive leaf springs considering real shot size distributions. The results reveal that the increase in shot velocity and the impact angle increase the extent of the residual stresses but also the surface roughness. The usage of elastoplastic material properties for the shots has been proved crucial to obtain physically reasonable results regarding the component’s behavior.

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An Examination of Abrasive Waterjet Peening With Elastic Pre-Stress and the Effects of Boundary Conditions

Sadasivam

Arola

2012

Machining Science and Technology

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Finite element modelling of shot peening process- A progress overview

Cited by 3 publications

References 24 publications

Investigation of the Shot Size Effect on Residual Stresses through a 2D FEM Model of the Shot Peening Process

Investigation of the Shot Size Effect on Residual Stresses through a 2D FEM Model of the Shot Peening Process

A FEM-Based 2D Model for Simulation and Qualitative Assessment of Shot-Peening Processes

An Examination of Abrasive Waterjet Peening With Elastic Pre-Stress and the Effects of Boundary Conditions

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