A study on the evolution of the contact angle of small punch creep test of Ductile materials

The work discussed in the present paper reports a novel investigation of the applicability of Chakrabarty's theory, for membrane stretching of a circular blank over a rigid punch, to small punch creep test (SPCT). The Chakrabarty solution was compared with corresponding results obtained by nume...

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Main Authors:	Cacciapuoti, B., Sun, Wei, McCartney, D.G.
Format:	Article
Language:	English
Published:	Elsevier 2016
Online Access:	http://eprints.nottingham.ac.uk/34896/ http://eprints.nottingham.ac.uk/34896/ http://eprints.nottingham.ac.uk/34896/ http://eprints.nottingham.ac.uk/34896/1/Accepted%20Manuscript_IPVP_2016_12.pdf

id	nottingham-34896
recordtype	eprints
spelling	nottingham-348962018-07-02T09:06:50Z http://eprints.nottingham.ac.uk/34896/ A study on the evolution of the contact angle of small punch creep test of Ductile materials Cacciapuoti, B. Sun, Wei McCartney, D.G. The work discussed in the present paper reports a novel investigation of the applicability of Chakrabarty's theory, for membrane stretching of a circular blank over a rigid punch, to small punch creep test (SPCT). The Chakrabarty solution was compared with corresponding results obtained by numerical finite element (FE) analyses and experimental tests. The Liu and Murakami creep damage model was used in the FE analyses. The aim of the work is also to improve the understanding of the mechanism governing the deformation and the failure of the specimen and to verify the range of applicability of the CEN Code of Practice CWA 15627, which is based on Chakrabarty's theory. The effects of various parameters, such as the initial thickness of the specimen, the radius of the punch, the load magnitude, the friction coefficient and different plasticity constitutive models, on the variation of the contact angle, θ0, and the central displacement of the punch, Δ, were identified and correlated by fitting equations. The variation of θ0 with Δ, obtained from Chakrabarty's solution was compared with that obtained by FE analyses of the SPCT. When the initial thickness of the specimen increased and the radius of the punch decreased, the FE results, in terms of the variation of θ0 versus Δ, showed to differ from Chakrabarty's solution, therefore new ranges of applicability of the CEN Code of Practice CWA 15627 were determined. Elsevier 2016-06-11 Article PeerReviewed application/pdf en http://eprints.nottingham.ac.uk/34896/1/Accepted%20Manuscript_IPVP_2016_12.pdf Cacciapuoti, B. and Sun, Wei and McCartney, D.G. (2016) A study on the evolution of the contact angle of small punch creep test of Ductile materials. International Journal of Pressure Vessels and Piping . ISSN 0308-0161 http://www.sciencedirect.com/science/article/pii/S0308016116301892 doi:10.1016/j.ijpvp.2016.06.002 doi:10.1016/j.ijpvp.2016.06.002
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 work discussed in the present paper reports a novel investigation of the applicability of Chakrabarty's theory, for membrane stretching of a circular blank over a rigid punch, to small punch creep test (SPCT). The Chakrabarty solution was compared with corresponding results obtained by numerical finite element (FE) analyses and experimental tests. The Liu and Murakami creep damage model was used in the FE analyses. The aim of the work is also to improve the understanding of the mechanism governing the deformation and the failure of the specimen and to verify the range of applicability of the CEN Code of Practice CWA 15627, which is based on Chakrabarty's theory. The effects of various parameters, such as the initial thickness of the specimen, the radius of the punch, the load magnitude, the friction coefficient and different plasticity constitutive models, on the variation of the contact angle, θ0, and the central displacement of the punch, Δ, were identified and correlated by fitting equations. The variation of θ0 with Δ, obtained from Chakrabarty's solution was compared with that obtained by FE analyses of the SPCT. When the initial thickness of the specimen increased and the radius of the punch decreased, the FE results, in terms of the variation of θ0 versus Δ, showed to differ from Chakrabarty's solution, therefore new ranges of applicability of the CEN Code of Practice CWA 15627 were determined.
format	Article
author	Cacciapuoti, B. Sun, Wei McCartney, D.G.
spellingShingle	Cacciapuoti, B. Sun, Wei McCartney, D.G. A study on the evolution of the contact angle of small punch creep test of Ductile materials
author_facet	Cacciapuoti, B. Sun, Wei McCartney, D.G.
author_sort	Cacciapuoti, B.
title	A study on the evolution of the contact angle of small punch creep test of Ductile materials
title_short	A study on the evolution of the contact angle of small punch creep test of Ductile materials
title_full	A study on the evolution of the contact angle of small punch creep test of Ductile materials
title_fullStr	A study on the evolution of the contact angle of small punch creep test of Ductile materials
title_full_unstemmed	A study on the evolution of the contact angle of small punch creep test of Ductile materials
title_sort	study on the evolution of the contact angle of small punch creep test of ductile materials
publisher	Elsevier
publishDate	2016
url	http://eprints.nottingham.ac.uk/34896/ http://eprints.nottingham.ac.uk/34896/ http://eprints.nottingham.ac.uk/34896/ http://eprints.nottingham.ac.uk/34896/1/Accepted%20Manuscript_IPVP_2016_12.pdf
first_indexed	2018-09-06T12:31:37Z
last_indexed	2018-09-06T12:31:37Z
_version_	1610861351271399424

A study on the evolution of the contact angle of small punch creep test of Ductile materials

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