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Journal article 1329 views 317 downloads

Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods

M. Connolly, M. Whittaker, S. Williams, Mark Whittaker Orcid Logo

Materials Science and Technology, Volume: 30, Issue: 15, Pages: 1899 - 1904

Swansea University Author: Mark Whittaker Orcid Logo

DOI (Published version): 10.1179/1743284714Y.0000000539

Abstract

The creep behaviour of the nickel-superalloy RR1000 is studied through a number of constant-load creep tests. It is often assumed that creep data generated by constant-load testing are unsuitable for building a generalised creep model due to the non-constant stresses incurred. Analysis of existing m...

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Published in: Materials Science and Technology
Published: 2014
URI: https://cronfa.swan.ac.uk/Record/cronfa26773
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spelling 2016-05-16T13:18:22.4988040 v2 26773 2016-03-17 Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods a146c6d442cb2c466d096179f9ac97ca 0000-0002-5854-0726 Mark Whittaker Mark Whittaker true false 2016-03-17 MTLS The creep behaviour of the nickel-superalloy RR1000 is studied through a number of constant-load creep tests. It is often assumed that creep data generated by constant-load testing are unsuitable for building a generalised creep model due to the non-constant stresses incurred. Analysis of existing models shows that significant errors may occur in many approaches, which attempt to recreate the strain evolution with time. A model is presented which is not reliant on time as a parameter and is therefore able to utilise constant-load creep data without enforcing the assumption of a constant stress. This model is demonstrated through numerical analyses to replicate the creep behaviour across a large range of stresses accurately. The proposed model is then adapted as an Abaqus™ user-subroutine to demonstrate capability within finite element analysis. Journal Article Materials Science and Technology 30 15 1899 1904 31 7 2014 2014-07-31 10.1179/1743284714Y.0000000539 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2016-05-16T13:18:22.4988040 2016-03-17T13:11:12.0367123 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering M. Connolly 1 M. Whittaker 2 S. Williams 3 Mark Whittaker 0000-0002-5854-0726 4 0026773-17032016131209.pdf Cronfav4.pdf 2016-03-17T13:12:09.8370000 Output 1130720 application/pdf Accepted Manuscript true 2016-03-17T00:00:00.0000000 true
title Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
spellingShingle Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
Mark Whittaker
title_short Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
title_full Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
title_fullStr Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
title_full_unstemmed Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
title_sort Development of true-stress creep model through analysis of constant-load creep data with application to finite element methods
author_id_str_mv a146c6d442cb2c466d096179f9ac97ca
author_id_fullname_str_mv a146c6d442cb2c466d096179f9ac97ca_***_Mark Whittaker
author Mark Whittaker
author2 M. Connolly
M. Whittaker
S. Williams
Mark Whittaker
format Journal article
container_title Materials Science and Technology
container_volume 30
container_issue 15
container_start_page 1899
publishDate 2014
institution Swansea University
doi_str_mv 10.1179/1743284714Y.0000000539
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description The creep behaviour of the nickel-superalloy RR1000 is studied through a number of constant-load creep tests. It is often assumed that creep data generated by constant-load testing are unsuitable for building a generalised creep model due to the non-constant stresses incurred. Analysis of existing models shows that significant errors may occur in many approaches, which attempt to recreate the strain evolution with time. A model is presented which is not reliant on time as a parameter and is therefore able to utilise constant-load creep data without enforcing the assumption of a constant stress. This model is demonstrated through numerical analyses to replicate the creep behaviour across a large range of stresses accurately. The proposed model is then adapted as an Abaqus™ user-subroutine to demonstrate capability within finite element analysis.
published_date 2014-07-31T03:32:14Z
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score 11.035634

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