Open AccessDescriptions of stress-strain responses of non-linear unloading and closure of stress-strain hysteresis loop based on the Yoshida-Uemori model
Author(s) -
Fusahito Yoshida
Publication year - 2019
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/651/1/012058
Subject(s) - closure (psychology) , hysteresis , stress (linguistics) , modulus , strain (injury) , stress–strain curve , materials science , loop (graph theory) , structural engineering , mechanics , composite material , mathematics , physics , engineering , deformation (meteorology) , condensed matter physics , combinatorics , economics , medicine , market economy , linguistics , philosophy
This paper proposes models to describe a non-linear unloading-reloading stress-strain response and closure of a cyclic stress-strain hysteresis loop based on the Yoshida-Uemori (Y-U) model. The average stress-strain slope given by the non-linear model is consistent with the Y-U model of Young’s modulus degradation. The closure of a cyclic stress-strain curve is described by automatically changing one of the Y-U material parameters. An advantage of the above approaches is that no additional parameters are needed for modeling.