Characterization of viscoplasticity behaviour of P91 and P92 power plant steels
This paper deals with the determination of material constitutive model for P91 and P92 steels at high temperatures. An isothermal, strain-controlled test programme was conducted for both steels for a temperature range between 400 and 675 °C. The experimental data from these tests were used to obtain...
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| Format: | Article |
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Elsevier
2013
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| Online Access: | https://eprints.nottingham.ac.uk/46497/ |
| _version_ | 1848797340487385088 |
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| author | Saad, Abdullah Aziz Hyde, T.H. Sun, W. Hyde, Christopher J. Tanner, David W. J. |
| author_facet | Saad, Abdullah Aziz Hyde, T.H. Sun, W. Hyde, Christopher J. Tanner, David W. J. |
| author_sort | Saad, Abdullah Aziz |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This paper deals with the determination of material constitutive model for P91 and P92 steels at high temperatures. An isothermal, strain-controlled test programme was conducted for both steels for a temperature range between 400 and 675 °C. The experimental data from these tests were used to obtain the material constants in a viscoplasticity model. The model includes the effects of isotropic and kinematic hardening, as well as time-dependent effects, and has been used to model the cyclic material behaviour of each material. Material constants were initially determined from initial cycle stress–strain data, maximum stress evolution data and stress relaxation data. The material constants were improved by use of a least-squares optimisation algorithm. The constitutive models have been implemented into the ABAQUS finite element (FE) code by using the Z-mat software. The performances of the material models for both steels have been assessed by comparing predictions with experimental data obtained from the tests. |
| first_indexed | 2025-11-14T20:02:19Z |
| format | Article |
| id | nottingham-46497 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:02:19Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-464972020-05-04T16:40:29Z https://eprints.nottingham.ac.uk/46497/ Characterization of viscoplasticity behaviour of P91 and P92 power plant steels Saad, Abdullah Aziz Hyde, T.H. Sun, W. Hyde, Christopher J. Tanner, David W. J. This paper deals with the determination of material constitutive model for P91 and P92 steels at high temperatures. An isothermal, strain-controlled test programme was conducted for both steels for a temperature range between 400 and 675 °C. The experimental data from these tests were used to obtain the material constants in a viscoplasticity model. The model includes the effects of isotropic and kinematic hardening, as well as time-dependent effects, and has been used to model the cyclic material behaviour of each material. Material constants were initially determined from initial cycle stress–strain data, maximum stress evolution data and stress relaxation data. The material constants were improved by use of a least-squares optimisation algorithm. The constitutive models have been implemented into the ABAQUS finite element (FE) code by using the Z-mat software. The performances of the material models for both steels have been assessed by comparing predictions with experimental data obtained from the tests. Elsevier 2013-12-31 Article PeerReviewed Saad, Abdullah Aziz, Hyde, T.H., Sun, W., Hyde, Christopher J. and Tanner, David W. J. (2013) Characterization of viscoplasticity behaviour of P91 and P92 power plant steels. International Journal of Pressure Vessels and Piping, 111-112 . pp. 246-252. ISSN 0308-0161 Viscoplasticity model P91 P92 Thermo-mechanical fatigue https://doi.org/10.1016/j.ijpvp.2013.08.001 doi:10.1016/j.ijpvp.2013.08.001 doi:10.1016/j.ijpvp.2013.08.001 |
| spellingShingle | Viscoplasticity model P91 P92 Thermo-mechanical fatigue Saad, Abdullah Aziz Hyde, T.H. Sun, W. Hyde, Christopher J. Tanner, David W. J. Characterization of viscoplasticity behaviour of P91 and P92 power plant steels |
| title | Characterization of viscoplasticity behaviour of P91 and P92 power plant steels |
| title_full | Characterization of viscoplasticity behaviour of P91 and P92 power plant steels |
| title_fullStr | Characterization of viscoplasticity behaviour of P91 and P92 power plant steels |
| title_full_unstemmed | Characterization of viscoplasticity behaviour of P91 and P92 power plant steels |
| title_short | Characterization of viscoplasticity behaviour of P91 and P92 power plant steels |
| title_sort | characterization of viscoplasticity behaviour of p91 and p92 power plant steels |
| topic | Viscoplasticity model P91 P92 Thermo-mechanical fatigue |
| url | https://eprints.nottingham.ac.uk/46497/ https://eprints.nottingham.ac.uk/46497/ https://eprints.nottingham.ac.uk/46497/ |