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...

Full description

Saved in:
Bibliographic Details
Main Authors: Pottier T., Toussaint F., Louche H., Vacher P.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84868663891&partnerID=40&md5=92835fb813194252f184f46e35a3a74e
http://cmuir.cmu.ac.th/handle/6653943832/1648
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
Language: English
id th-cmuir.6653943832-1648
record_format dspace
spelling th-cmuir.6653943832-16482014-08-29T09:29:33Z Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements Pottier T. Toussaint F. Louche H. Vacher P. 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. 2014-08-29T09:29:33Z 2014-08-29T09:29:33Z 2013 Article 09977538 10.1016/j.euromechsol.2012.09.002 EJASE http://www.scopus.com/inward/record.url?eid=2-s2.0-84868663891&partnerID=40&md5=92835fb813194252f184f46e35a3a74e http://cmuir.cmu.ac.th/handle/6653943832/1648 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
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 Article
author Pottier T.
Toussaint F.
Louche H.
Vacher P.
spellingShingle Pottier T.
Toussaint F.
Louche H.
Vacher P.
Inelastic heat fraction estimation from two successive mechanical and thermal analyses and full-field measurements
author_facet Pottier T.
Toussaint F.
Louche H.
Vacher P.
author_sort Pottier T.
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 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84868663891&partnerID=40&md5=92835fb813194252f184f46e35a3a74e
http://cmuir.cmu.ac.th/handle/6653943832/1648
_version_ 1681419709676781568