A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel
The finite element (FE) implementation of a hyperbolic sine unified cyclic viscoplasticity model is presented. The hyperbolic sine flow rule facilitates the identification of strain-rate independent material parameters for high temperature applications. This is important for the thermo-mechanical fa...
| Main Authors: | , , , , , |
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| Format: | Article |
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American Society of Mechanical Engineers
2014
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| Online Access: | https://eprints.nottingham.ac.uk/46514/ |
| _version_ | 1848797345165082624 |
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| author | Barrett, R.A. Farragher, T.P. Hyde, Christopher J. O'Dowd, N.P. O'Donoghue, P.E. Leen, S.B. |
| author_facet | Barrett, R.A. Farragher, T.P. Hyde, Christopher J. O'Dowd, N.P. O'Donoghue, P.E. Leen, S.B. |
| author_sort | Barrett, R.A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The finite element (FE) implementation of a hyperbolic sine unified cyclic viscoplasticity model is presented. The hyperbolic sine flow rule facilitates the identification of strain-rate independent material parameters for high temperature applications. This is important for the thermo-mechanical fatigue of power plants where a significant stress range is experienced during operational cycles and at stress concentration features, such as welds and branched connections. The material model is successfully applied to the characterisation of the high temperature low cycle fatigue behavior of a service-aged P91 material, including isotropic (cyclic) softening and nonlinear kinematic hardening effects, across a range of temperatures and strain-rates. |
| first_indexed | 2025-11-14T20:02:24Z |
| format | Article |
| id | nottingham-46514 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:02:24Z |
| publishDate | 2014 |
| publisher | American Society of Mechanical Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-465142020-05-04T20:14:46Z https://eprints.nottingham.ac.uk/46514/ A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel Barrett, R.A. Farragher, T.P. Hyde, Christopher J. O'Dowd, N.P. O'Donoghue, P.E. Leen, S.B. The finite element (FE) implementation of a hyperbolic sine unified cyclic viscoplasticity model is presented. The hyperbolic sine flow rule facilitates the identification of strain-rate independent material parameters for high temperature applications. This is important for the thermo-mechanical fatigue of power plants where a significant stress range is experienced during operational cycles and at stress concentration features, such as welds and branched connections. The material model is successfully applied to the characterisation of the high temperature low cycle fatigue behavior of a service-aged P91 material, including isotropic (cyclic) softening and nonlinear kinematic hardening effects, across a range of temperatures and strain-rates. American Society of Mechanical Engineers 2014-04 Article PeerReviewed Barrett, R.A., Farragher, T.P., Hyde, Christopher J., O'Dowd, N.P., O'Donoghue, P.E. and Leen, S.B. (2014) A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel. Journal of Pressure Vessel Technology, 136 (2). 021402/1-021402/8. ISSN 1528-8978 service-aged P91 strain-rate independence unified viscoplasticity high temperature low cycle fatigue material Jacobian http://pressurevesseltech.asmedigitalcollection.asme.org/article.aspx?articleid=1750097 doi:10.1115/1.4025618 doi:10.1115/1.4025618 |
| spellingShingle | service-aged P91 strain-rate independence unified viscoplasticity high temperature low cycle fatigue material Jacobian Barrett, R.A. Farragher, T.P. Hyde, Christopher J. O'Dowd, N.P. O'Donoghue, P.E. Leen, S.B. A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel |
| title | A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel |
| title_full | A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel |
| title_fullStr | A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel |
| title_full_unstemmed | A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel |
| title_short | A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel |
| title_sort | unified viscoplastic model for high temperature low cycle fatigue of service-aged p91 steel |
| topic | service-aged P91 strain-rate independence unified viscoplasticity high temperature low cycle fatigue material Jacobian |
| url | https://eprints.nottingham.ac.uk/46514/ https://eprints.nottingham.ac.uk/46514/ https://eprints.nottingham.ac.uk/46514/ |