Multiaxial viscoplasticity modelling of power plant steel
The thermo-mechanical fatigue (TMF) of power plant components is caused by the cyclic operation of power plant. A time-dependent plasticity model can be used to simulate the component response under cyclic thermo-mechanical loading. This paper is concerned with the modelling of thermo-mechanical beh...
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| Format: | Article |
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Trans Tech Publications
2016
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| Online Access: | https://eprints.nottingham.ac.uk/41226/ |
| _version_ | 1848796225897234432 |
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| author | Saad, Abdullah Aziz Sun, Wei Tobi, A.L. Mohd |
| author_facet | Saad, Abdullah Aziz Sun, Wei Tobi, A.L. Mohd |
| author_sort | Saad, Abdullah Aziz |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The thermo-mechanical fatigue (TMF) of power plant components is caused by the cyclic operation of power plant. A time-dependent plasticity model can be used to simulate the component response under cyclic thermo-mechanical loading. This paper is concerned with the modelling of thermo-mechanical behaviour of power plant steel under various loading conditions. Fully-reversed, strain-controlled tests were conducted on a parent material of P91 steel at high temperatures in order to determine material constants. A unified, Chaboche viscoplasticity model, was used to model the TMF behaviour of the steel. The multiaxial form of the Chaboche constitutive equations have been implemented in the finite element software and validated by comparing to experimental data. Simulation results have been compared with the results of anisothermal cyclic testing in order to validate the performance of the model in cyclic temperature conditions. The model’s performance under multiaxial stress conditions was investigated by testing and simulating the notched bar specimen under load-controlled conditions. |
| first_indexed | 2025-11-14T19:44:36Z |
| format | Article |
| id | nottingham-41226 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:44:36Z |
| publishDate | 2016 |
| publisher | Trans Tech Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-412262020-05-04T18:02:21Z https://eprints.nottingham.ac.uk/41226/ Multiaxial viscoplasticity modelling of power plant steel Saad, Abdullah Aziz Sun, Wei Tobi, A.L. Mohd The thermo-mechanical fatigue (TMF) of power plant components is caused by the cyclic operation of power plant. A time-dependent plasticity model can be used to simulate the component response under cyclic thermo-mechanical loading. This paper is concerned with the modelling of thermo-mechanical behaviour of power plant steel under various loading conditions. Fully-reversed, strain-controlled tests were conducted on a parent material of P91 steel at high temperatures in order to determine material constants. A unified, Chaboche viscoplasticity model, was used to model the TMF behaviour of the steel. The multiaxial form of the Chaboche constitutive equations have been implemented in the finite element software and validated by comparing to experimental data. Simulation results have been compared with the results of anisothermal cyclic testing in order to validate the performance of the model in cyclic temperature conditions. The model’s performance under multiaxial stress conditions was investigated by testing and simulating the notched bar specimen under load-controlled conditions. Trans Tech Publications 2016-07-11 Article PeerReviewed Saad, Abdullah Aziz, Sun, Wei and Tobi, A.L. Mohd (2016) Multiaxial viscoplasticity modelling of power plant steel. Key Engineering Materials, 701 . pp. 230-234. ISSN 1662-9795 Viscoplasticity model P91 steel FE simulation https://www.scientific.net/KEM.701.230 doi:10.4028/www.scientific.net/KEM.701.230 doi:10.4028/www.scientific.net/KEM.701.230 |
| spellingShingle | Viscoplasticity model P91 steel FE simulation Saad, Abdullah Aziz Sun, Wei Tobi, A.L. Mohd Multiaxial viscoplasticity modelling of power plant steel |
| title | Multiaxial viscoplasticity modelling of power plant steel |
| title_full | Multiaxial viscoplasticity modelling of power plant steel |
| title_fullStr | Multiaxial viscoplasticity modelling of power plant steel |
| title_full_unstemmed | Multiaxial viscoplasticity modelling of power plant steel |
| title_short | Multiaxial viscoplasticity modelling of power plant steel |
| title_sort | multiaxial viscoplasticity modelling of power plant steel |
| topic | Viscoplasticity model P91 steel FE simulation |
| url | https://eprints.nottingham.ac.uk/41226/ https://eprints.nottingham.ac.uk/41226/ https://eprints.nottingham.ac.uk/41226/ |