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...

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Main Authors:	Barrett, R.A., Farragher, T.P., Hyde, Christopher J., O'Dowd, N.P., O'Donoghue, P.E., Leen, S.B.
Format:	Article
Language:	English
Published:	American Society of Mechanical Engineers 2014
Online Access:	http://eprints.nottingham.ac.uk/46514/ http://eprints.nottingham.ac.uk/46514/ http://eprints.nottingham.ac.uk/46514/ http://eprints.nottingham.ac.uk/46514/1/Barrett%20-%20PVT%20Manuscript%20-%20ePrints.pdf

id	nottingham-46514
recordtype	eprints
spelling	nottingham-465142017-10-13T17:46:25Z http://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 application/pdf en http://eprints.nottingham.ac.uk/46514/1/Barrett%20-%20PVT%20Manuscript%20-%20ePrints.pdf Barrett, R.A. and Farragher, T.P. and Hyde, Christopher J. and O'Dowd, N.P. and 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 http://pressurevesseltech.asmedigitalcollection.asme.org/article.aspx?articleid=1750097 doi:10.1115/1.4025618 doi:10.1115/1.4025618
repository_type	Digital Repository
institution_category	Local University
institution	University of Nottingham Malaysia Campus
building	Nottingham Research Data Repository
collection	Online Access
language	English
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.
format	Article
author	Barrett, R.A. Farragher, T.P. Hyde, Christopher J. O'Dowd, N.P. O'Donoghue, P.E. Leen, S.B.
spellingShingle	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
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.
title	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_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_sort	unified viscoplastic model for high temperature low cycle fatigue of service-aged p91 steel
publisher	American Society of Mechanical Engineers
publishDate	2014
url	http://eprints.nottingham.ac.uk/46514/ http://eprints.nottingham.ac.uk/46514/ http://eprints.nottingham.ac.uk/46514/ http://eprints.nottingham.ac.uk/46514/1/Barrett%20-%20PVT%20Manuscript%20-%20ePrints.pdf
first_indexed	2018-09-06T13:47:15Z
last_indexed	2018-09-06T13:47:15Z
_version_	1610866109781639168

A unified viscoplastic model for high temperature low cycle fatigue of service-aged P91 steel

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