Open AccessConstitutive Model of TC21 Titanium Alloy Based On BPNN
Author(s) -
Hongbiao Dong,
Chengtong Sun
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1732/1/012149
Subject(s) - titanium alloy , constitutive equation , alloy , flow stress , materials science , isothermal process , deformation (meteorology) , plasticity , toughness , compression (physics) , metallurgy , strain (injury) , test data , titanium , composite material , structural engineering , computer science , thermodynamics , engineering , finite element method , medicine , anatomy , physics , programming language
TC21 alloy is a new two-phase titanium alloy with good comprehensive properties of high strength, toughness and damage tolerance. The isothermal thermal compression deformation test of TC21 titanium alloy is carried out on the Gleeble-3500 thermal simulation test machine. Based on the stress-strain data at different temperatures and strain rates, the constitutive relation model of TC21 alloy was established by using BPNN(Back Propagation Neural Network), which has high prediction and generalization ability, and the predicted flow stress value is very close to the experimental data.