Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements

Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements

A new method to identify inelastic heat fraction (b factor) evolution models is proposed in this paper. It is based on: (i) simultaneous kinematic and thermal field measurements on heterogeneous tensile tests and (ii) Finite Element Updating (FEU) inverse method. Two inverse calculations, that invol...

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Main Authors: T. Pottier, F. Toussaint, H. Louche, P. Vacher
Format: Journal
Published: 2018
Subjects:
Engineering
Materials Science
Mathematics
Physics and Astronomy
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84868663891&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/52591
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-525912018-09-04T09:37:36Z Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements T. Pottier F. Toussaint H. Louche P. Vacher Engineering Materials Science Mathematics Physics and Astronomy A new method to identify inelastic heat fraction (b factor) evolution models is proposed in this paper. It is based on: (i) simultaneous kinematic and thermal field measurements on heterogeneous tensile tests and (ii) Finite Element Updating (FEU) inverse method. Two inverse calculations, that involve a LevenbergeMarquardt optimization algorithm, are successively used to identify on the one hand the material parameters of a mechanical constitutive model (anisotropic plasticity coefficients and hardening parameters) and on the other hand the plastic power ratio converted into heat. The power balance of the thermomechanical problem is calculated and presented, and the assessment of thermal heat sources is detailed. Finally, six mechanical parameters and four evolution models of b are successively identified for commercially pure titanium. Results confirm a strain dependency of b. © 2012 Elsevier Masson SAS. All rights reserved. 2018-09-04T09:27:42Z 2018-09-04T09:27:42Z 2013-01-01 Journal 09977538 2-s2.0-84868663891 10.1016/j.euromechsol.2012.09.002 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84868663891&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/52591
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Engineering
Materials Science
Mathematics
Physics and Astronomy
spellingShingle Engineering
Materials Science
Mathematics
Physics and Astronomy
T. Pottier
F. Toussaint
H. Louche
P. Vacher
Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
description A new method to identify inelastic heat fraction (b factor) evolution models is proposed in this paper. It is based on: (i) simultaneous kinematic and thermal field measurements on heterogeneous tensile tests and (ii) Finite Element Updating (FEU) inverse method. Two inverse calculations, that involve a LevenbergeMarquardt optimization algorithm, are successively used to identify on the one hand the material parameters of a mechanical constitutive model (anisotropic plasticity coefficients and hardening parameters) and on the other hand the plastic power ratio converted into heat. The power balance of the thermomechanical problem is calculated and presented, and the assessment of thermal heat sources is detailed. Finally, six mechanical parameters and four evolution models of b are successively identified for commercially pure titanium. Results confirm a strain dependency of b. © 2012 Elsevier Masson SAS. All rights reserved.
format Journal
author T. Pottier
F. Toussaint
H. Louche
P. Vacher
author_facet T. Pottier
F. Toussaint
H. Louche
P. Vacher
author_sort T. Pottier
title Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
title_short Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
title_full Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
title_fullStr Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
title_full_unstemmed Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
title_sort inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84868663891&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/52591
_version_ 1681423979104960512

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