Journal article 1328 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 
Materials Science and Technology, Volume: 30, Issue: 15, Pages: 1899 - 1904
Swansea University Author:
Mark Whittaker
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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...
| Published in: | Materials Science and Technology |
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| Published: |
2014
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa26773 |
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| 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 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. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
15 |
| Start Page: |
1899 |
| End Page: |
1904 |