3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM

Timothy Crump; Sarah Mundy; Andrey Jivkov; Paul Mummery; Guilhem Ferté; Van-Xuan Tran

3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM

Timothy Crump, Sarah Mundy, Andrey Jivkov, Paul Mummery, Guilhem Ferté, Van-Xuan Tran

Research output: Contribution to conference › Paper › peer-review

Abstract

It has been anticipated and recently observed that axial cracks can occur at keyway corners of graphite bricks in the UK Advanced Gas-cooled Reactors (AGR). The crack initiation is triggered by internal stress reversal during reactor operation and may potentially lead to brick more cracks through a mechanism known as Prompt Secondary Cracking (PSC). To assess the likelihood of this occurring, a method for modelling dynamic fracture, known as eXtended Finite Element Method with cohesive elements (XCZM), is used to analyse whole 3D component fragmentation. Within this work, XCZM is used to model primary crack interactions with a methane hole and secondary crack profiles in a 3D brick slice under external hoop stress loading.

Original language	English
Publication status	Published - 20 Aug 2017

MaPoS: Mechanics and Physics of Solids
Jivkov, A. (PI), Katnam, K.-B. (CoI), Lazarov, B. (CoI), Margetts, L. (CoI), Boom, P. (CoI), Borodin, E. (CoI), Kosmas, O. (CoI), Baychev, T. (PGR student), Chen, T. (PGR student), Farrokhnia, A. (PGR student), Ford, M. (PGR student), He, L. (PGR student), Hewitt, S. (PGR student), Li, X. (PGR student), Marshall, O. (PGR student), Song, Z. (PGR student), Tsamos, A. (PGR student) & Wang, J. (PGR student)
Project: Research

2 Article

Dynamic fracture analysis by explicit solid dynamics and implicit crack propagation
Crump, T., Ferté, G., Jivkov, A., Mummery, P. & Tran, V.-X., 15 Apr 2017, In: International Journal of Solids and Structures. 110-111, p. 113-126
Research output: Contribution to journal › Article › peer-review

Open Access
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1135 Downloads (Pure)
A meso-scale approach to modelling stable dynamic crack propagation in glass under rate-dependent loading
Crump, T., Mummery, P., Jivkov, A. & Tran, V.-X., 1 Dec 2016, In: Procedia Structural Integrity. 2, p. 381-388 8 p.
Research output: Contribution to journal › Article › peer-review

Open Access

4 Downloads (Pure)

1 Oral presentation

3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM
Andrey Jivkov (Speaker)
23 Aug 2017
Activity: Talk or presentation › Oral presentation › Research

Cite this

@conference{62fdc9ae138146e1a73e59da82502d60,

title = "3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM",

abstract = "It has been anticipated and recently observed that axial cracks can occur at keyway corners of graphite bricks in the UK Advanced Gas-cooled Reactors (AGR). The crack initiation is triggered by internal stress reversal during reactor operation and may potentially lead to brick more cracks through a mechanism known as Prompt Secondary Cracking (PSC). To assess the likelihood of this occurring, a method for modelling dynamic fracture, known as eXtended Finite Element Method with cohesive elements (XCZM), is used to analyse whole 3D component fragmentation. Within this work, XCZM is used to model primary crack interactions with a methane hole and secondary crack profiles in a 3D brick slice under external hoop stress loading.",

author = "Timothy Crump and Sarah Mundy and Andrey Jivkov and Paul Mummery and Guilhem Fert{\'e} and Van-Xuan Tran",

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day = "20",

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TY - CONF

T1 - 3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM

AU - Crump, Timothy

AU - Mundy, Sarah

AU - Jivkov, Andrey

AU - Mummery, Paul

AU - Ferté, Guilhem

AU - Tran, Van-Xuan

PY - 2017/8/20

Y1 - 2017/8/20

N2 - It has been anticipated and recently observed that axial cracks can occur at keyway corners of graphite bricks in the UK Advanced Gas-cooled Reactors (AGR). The crack initiation is triggered by internal stress reversal during reactor operation and may potentially lead to brick more cracks through a mechanism known as Prompt Secondary Cracking (PSC). To assess the likelihood of this occurring, a method for modelling dynamic fracture, known as eXtended Finite Element Method with cohesive elements (XCZM), is used to analyse whole 3D component fragmentation. Within this work, XCZM is used to model primary crack interactions with a methane hole and secondary crack profiles in a 3D brick slice under external hoop stress loading.

AB - It has been anticipated and recently observed that axial cracks can occur at keyway corners of graphite bricks in the UK Advanced Gas-cooled Reactors (AGR). The crack initiation is triggered by internal stress reversal during reactor operation and may potentially lead to brick more cracks through a mechanism known as Prompt Secondary Cracking (PSC). To assess the likelihood of this occurring, a method for modelling dynamic fracture, known as eXtended Finite Element Method with cohesive elements (XCZM), is used to analyse whole 3D component fragmentation. Within this work, XCZM is used to model primary crack interactions with a methane hole and secondary crack profiles in a 3D brick slice under external hoop stress loading.

M3 - Paper

ER -

3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM

Abstract

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Projects

MaPoS: Mechanics and Physics of Solids

Research output

Dynamic fracture analysis by explicit solid dynamics and implicit crack propagation

A meso-scale approach to modelling stable dynamic crack propagation in glass under rate-dependent loading

Activities

3D dynamic fracture and fragmentation of AGR Graphite brick slices using XCZM

Cite this