Experiment and Simulation of Effect of Shot Peening on Fatigue Performance of A100 Steel

QIAN Ang; ZHANG Ding; SHAN Borong; ZOU Gang; ZHANG Yukun; HUANG Hailiang

doi:10.7643/issn.1672-9242.2026.10.006

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (10) : 53-61. DOI: 10.7643/issn.1672-9242.2026.10.006

Aviation and Aerospace Equipment

Experiment and Simulation of Effect of Shot Peening on Fatigue Performance of A100 Steel

QIAN Ang, ZHANG Ding^*, SHAN Borong, ZOU Gang, ZHANG Yukun, HUANG Hailiang

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Abstract

The work aims to study the effect of shot peening on the surface parameters and fatigue properties of A100 steel material. The effect of shot peening on surface morphology, surface roughness, and residual stress was analyzed through surface integrity testing. The fatigue tests were conducted to observe the morphology of fatigue fracture surfaces, and analyze the effect of shot peening on crack generation and propagation. A fatigue simulation model based on ABAQUS and FE-SAFE was established by introducing measured roughness and residual stress data. The fatigue life of non shot peened and shot peened specimens was simulated and compared with the fatigue test results. After shot peening, obvious plastic deformation was generated on the specimen surface, the surface roughness increased, and a residual compressive stress layer with a depth of approximately 175 µm was formed. Multiple crack initiation sites were observed in the non shot peened specimen, whereas only one crack initiation site was found in the shot peened specimen. The area of the crack propagation region of the shot peened specimen was slightly larger than that of the non shot peened specimen, which indicated that a longer crack propagation time was achieved. Finer fatigue striations were formed in the shot peened specimen, demonstrating that a smaller crack propagation distance was obtained under unit fatigue load. Larger and deeper dimples were present in the final fracture zone of the shot peened specimen, showing that a stronger capacity for plastic deformation was attained. The fatigue test and simulation results revealed that the fatigue critical locations of both non shot peened and shot peened specimens were located at the notch root. Significant increases in the average experimental and simulated fatigue lives were observed for the shot peened specimen compared with the non shot peened specimen, with growth rates of 70.69% and 70.01%, respectively. The average error between experimental and simulated fatigue lives was 8.83%, and good agreement was achieved between simulated and experimental fatigue lives. Shot peening can significantly improve the fatigue life of A100 steel, and simulation methods can be used to predict its fatigue life.

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A100 steel / shot peening / roughness / residual stress / fatigue life / simulation

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QIAN Ang, ZHANG Ding, SHAN Borong, ZOU Gang, ZHANG Yukun, HUANG Hailiang. Experiment and Simulation of Effect of Shot Peening on Fatigue Performance of A100 Steel[J]. Equipment Environmental Engineering. 2026, 23(10): 53-61 https://doi.org/10.7643/issn.1672-9242.2026.10.006

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