Abstract
Shot peening is a widely used treatment to improve the fatigue life of metallic components by introducing compressive residual stresses to the top layer of the components. Oblique incidence is often involved in the peening process due to geometric complexity of the real components. It is therefore the purpose of this study to conduct a realistic 3D finite element (FE) analysis of the peening process involving a large number of shots impinging simultaneously at a rate sensitive target made from Ti-6Al-4 V. A periodic cell model is developed to examine the effect of oblique incidence. The periodicity of the model is first validated by comparing the residual stress with that from a larger model. A parametric study is conducted to investigate the effect of shot impinging angles upon the residual stress generation. It is found that normal incidence leads to the largest residual stress magnitude and the compressive zone depth.
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Yang, F., Chen, Z., Meguid, S.A., Guagliano, M. (2014). Realistic 3D FE Modelling of Peening Residual Stresses of Strain-Rate Sensitive Materials with Oblique Incident Angles. In: Rossi, M., et al. Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00876-9_26
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DOI: https://doi.org/10.1007/978-3-319-00876-9_26
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