We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Surface Residual Stress Release Behavior of Shot-Peened Springs
Summary
Researchers developed an equivalent replacement algorithm to quantify residual stress reduction in shot-peened springs under cyclic multiaxial loading, accounting for surface roughness, helix angle, and cyclic loading effects on stress attenuation. They found that the algorithm accurately modeled dynamic residual stress release and that incorporating it into a spring fatigue life prediction model improved estimation accuracy.
Shot peening is the primary method used to improve the fatigue life of springs. In this study, we aimed to quantify the reduction in residual stresses in the shot-peened layer by considering factors such as surface roughness, cyclic loading, and the helix angle, based on the spring’s periodic variation and curvature characteristics. We developed an equivalent replacement algorithm to address the challenge of characterizing the dynamic accumulation and attenuation of residual stresses under cyclic multiaxial stresses. This algorithm accurately modeled the dynamic attenuation of residual stresses and was incorporated into the spring life prediction model. Experimental validation demonstrated the high accuracy of the model for predicting fatigue life.
Sign in to start a discussion.
More Papers Like This
Effects of Mean Stress and Multiaxial Loading on the Fatigue Life of Springs
Researchers theoretically studied the effects of non-zero mean stress and multiaxial loading on the fatigue life of springs, comparing conventional damage hypotheses (Smith-Watson-Topper, Walker, Bergmann) with Goodman and Haigh diagrams and analyzing their differing physical assumptions about mean stress sensitivity.
Experimental validation of multiaxial fatigue theories to estimate fatigue life of helical compression spring
This study experimentally tested several multiaxial fatigue theories to predict the lifespan of helical compression springs used in vehicle suspension systems. The findings help engineers choose the most accurate fatigue model for designing springs that can withstand the stress cycles of real-world use.
Determination of energy dissipation during cyclic loading and its use to predict fatigue life of metal alloys
This paper is not about microplastics — it develops a mathematical method for predicting the fatigue life of metal alloys from energy dissipation during cyclic loading.
Effect of Shot Peening Process on Rolling Contact Fatigue Performance of EN 31 Alloy Steel
This study investigated how shot peening — a surface treatment process — affects the fatigue life of EN 31 steel under rolling contact conditions. The results show improved fatigue resistance, relevant for designing more durable metal components in machinery and vehicles.
Continuum approach to fatigue life prediction based on defect size
Researchers developed a continuum-based fatigue life prediction model that incorporates defect size as a key parameter, addressing limitations of conventional cycle-counting methods that assume constant amplitude loading and are insufficient for multiaxial fatigue scenarios.