A study of the residual stress induced by shot peening for an isotropic material based on Prager’s yield criterion for combined stresses
Prager developed a yield criterion for a generalized isotropic material that is more capable of predicting material behavior that occurs from combined loading. A less studied topic is the effect of combined loading on the residual stress state. The purpose of the present work is to develop a theoretical model for a residual stress based on Prager’s relation and establish how the predictions are influenced. Prager’s yield criterion which includes the third deviatoric invariant, J3, provides a way to estimate the influence J3 has on the residual stress. The analyzed residual stress originates from shot peening because much experimental data exists to compare and validate the theoretical results.
KeywordsShot peening Plasticity Fatigue Residual stress
Dr. Davis gratefully acknowledges support provided by the College of Engineering of the University of Washington throughout the duration of this work.
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