Open AccessA unified simulation of low-to-high cycle fatigue failure effects for metals with efficient algorithm
Author(s) -
Lin Zhan,
S. Wang,
Zihan Xu,
Huifeng Xi,
Heng Xiao
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/770/1/012109
Subject(s) - low cycle fatigue , algorithm , work (physics) , fatigue testing , computer science , scheme (mathematics) , structural engineering , mathematics , engineering , mechanical engineering , mathematical analysis
Within the framework of a recently established elastoplasticity model incorporating fatigue failure effects into inherent response features, a new and efficient algorithm is proposed to simultaneously treat fatigue failure effects from low to high cycle cases. From the new model it is possible to derive an explicit algorithm with which the accumulated plastic work is directly calculated by means of a recursive scheme, thus bypassing very time-consuming procedures in carrying out numerical integrations of the elastoplastic rate equations for a large number of loading-unloading cycles. Comparisons of simulation results with fatigue failure data from low to high cycle cases are presented to demonstrate the efficacy of the new algorithm.