Analysis of the Vibrational Stress Relief for Reducing the Residual Stresses Caused by Machining

This research examines the use of vibratory methods to reduce residual stresses in structures. The main objective of this work is to seek a better knowing of the mechanism of the reduction of residual stresses of materials undergoing cyclic loading. Experiments have demonstrated that residual stresses can be largely relieved through vibratory stress relief (VSR) treatment. The factors that influence the reduction of residual stresses need to be understood to effectively apply the process. A mathematical model based on plasticity theorem with linear kinematic hardening is generated to explain the mechanism of reduction of residual stresses of materials experiencing cyclic loading. The numerical results from the mathematical model and the analytical results with existing experimental data for rectangular cross-section beams showed a similar trend.