Topic
Vibration fatigue
About: Vibration fatigue is a research topic. Over the lifetime, 3460 publications have been published within this topic receiving 46297 citations.
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TL;DR: In this article, the authors compared two repair plans to repair the shafting abrasion defects as the long-term wearing effect of foreign objects, observed in a 660MW steam turbine.
16 citations
TL;DR: In this article, a coupled electrical-thermal-mechanical analysis is proposed to accurately predict the fatigue properties of power devices, based on the finite element method, and the calculation accuracy of the fatigue life evaluation depends on the mesh resolution.
15 citations
Journal Article•
TL;DR: In this paper, a nonlinear fatigue damage cumulative rule, a modified Corten-Dolan's theory, is proposed based on the definition of fatigue damage by introducing the concept of modulus degradation.
Abstract: Fatigue is a damage accumulation process in which the material property deteriorates continuously under cyclic loadingThrough investigation of strength degradation in the material during the fatigue process,a nonlinear fatigue damage cumulative rule,a modified Corten-Dolan's theory,is proposed based on the definition of fatigue damage by introducing the concept of modulus degradationThis model improves the application of Corten-Dolan's theory,which considers not only the effects of load interaction but also the phenomenon of strength degradation in materials induced by the loading historyMoreover,the expressions for estimating fatigue reliability of structural elements under multiple loading levels are provided based on this modelThese expressions can be used to predict the fatigue reliability and the life of structural elements under the assumption that the distribution of the residual strength can be approximated by the log-normal distributionTwo examples of two level stress loading tests are given for structural fatigue life estimationThe examples demonstrate that the fatigue life predicted by the proposed method is more accurate than those by traditional methodsThe proposed method can be generalized to the cases of multilevel loading
15 citations
TL;DR: In this article, the authors presented the theoretical background related to the fatigue life prediction using finite element analysis (FEA) based fatigue for automotive components in a form of review write-up.
Abstract: This research describes the majority of interesting findings in the use of the Finite Element Analysis (FEA) based fatigue for automotive components in a form of review write-up. Thus, the theoretical background related to the fatigue life prediction using FEA is presented which is the main subject of this research. The challenge for FEA-based software developers is to deliver reliable fatigue-analysis tools because over designing components is no longer a viable option. Combination between a fatigue model based on the crack initiation, the crack growth and the crack closures are performed with consideration of cycle sequence effect together with finite element results, which lead to the prediction of fatigue life under spectrum or service loadings.
15 citations
15 citations