Open AccessDetermining of parameters of nonisothermal cyclic curve model
Author(s) -
J. M Temis,
Alexander Fakeev
Publication year - 2015
Publication title -
izvestiâ mgtu "mami"
Language(s) - English
Resource type - Journals
eISSN - 2949-1428
pISSN - 2074-0530
DOI - 10.17816/2074-0530-67137
Subject(s) - curve fitting , nonlinear system , function (biology) , stress (linguistics) , deformation (meteorology) , modulus , materials science , measure (data warehouse) , transformation (genetics) , mathematics , computer science , composite material , statistics , physics , linguistics , philosophy , biochemistry , chemistry , quantum mechanics , database , evolutionary biology , gene , biology
It was proposed methodology of determining parameters of model of nonisothermal cyclic stress-strain curve. Algorithm of pattern recognition was implemented. It was based on minimization of function of mismatch between experimental results and calculation of three-parameter model curve which depends on Bauchinger’s effect, elastic unloading modulus and scale of transformation of nonlinear part of stress-strain curve. Odkvist’s parameter was used for measure of plastic deformation. Simulation of cyclic stress strain curve was carried out. Results of simulation were compared with experimental data.