Simulation of fracture/breakup of concrete magazine using cohesive element

To determine the potential hazard zone around an ammunition storage magazine is the research interest of many researchers working on explosive safety. Carrying out an explosion test of an ammunition storage magazine is expensive. As such, numerical modeling offers an economical solution to supplemen...

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Main Authors: Fan, S. C., Yu, Q. J., Lee, C. K.
Other Authors: Protective Technology Research Centre
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/101921
http://hdl.handle.net/10220/19813
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1019212020-03-07T11:45:54Z Simulation of fracture/breakup of concrete magazine using cohesive element Fan, S. C. Yu, Q. J. Lee, C. K. Protective Technology Research Centre DRNTU::Engineering::Materials To determine the potential hazard zone around an ammunition storage magazine is the research interest of many researchers working on explosive safety. Carrying out an explosion test of an ammunition storage magazine is expensive. As such, numerical modeling offers an economical solution to supplement the field tests, and it has been widely used to simulate the magazine breakup. In the literature and own previous studies, numerical simulations often resorted to the Lagrangian finite-element method and used the nodal-split algorithm to model the concrete fracture/breakup upon internal detonation. Pitfalls in that approach have not been fully recognized [[1]–[3]]. In it, all elements initially connected to the same node would be spilt in all directions once the nodal strain reached the threshold. This strain-based splitting criterion lacks of sound physical meaning. To overcome those pitfalls, the present study adopts a kind of interface element, namely a cohesive element, to simulate the fracture/breakup. Strain rate dependent experiments were carried out to obtain the fracture criteria, which were then applied to define the threshold for element-face split. Results show that it yields good agreement with experiment tests, including Split Hopkinson Pressure Bar (SHPB) on concrete specimen and breakup of concrete magazine upon detonation. 2014-06-19T01:56:35Z 2019-12-06T20:46:40Z 2014-06-19T01:56:35Z 2019-12-06T20:46:40Z 2014 2014 Journal Article Fan, S. C., Yu, Q. J., & Lee, C. K. (2014). Simulation of fracture/breakup of concrete magazine using cohesive element. Materialwissenschaft und Werkstofftechnik, 45(5), 385-396. 0933-5137 https://hdl.handle.net/10356/101921 http://hdl.handle.net/10220/19813 10.1002/mawe.201400237 en Materialwissenschaft und werkstofftechnik © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
spellingShingle DRNTU::Engineering::Materials
Fan, S. C.
Yu, Q. J.
Lee, C. K.
Simulation of fracture/breakup of concrete magazine using cohesive element
description To determine the potential hazard zone around an ammunition storage magazine is the research interest of many researchers working on explosive safety. Carrying out an explosion test of an ammunition storage magazine is expensive. As such, numerical modeling offers an economical solution to supplement the field tests, and it has been widely used to simulate the magazine breakup. In the literature and own previous studies, numerical simulations often resorted to the Lagrangian finite-element method and used the nodal-split algorithm to model the concrete fracture/breakup upon internal detonation. Pitfalls in that approach have not been fully recognized [[1]–[3]]. In it, all elements initially connected to the same node would be spilt in all directions once the nodal strain reached the threshold. This strain-based splitting criterion lacks of sound physical meaning. To overcome those pitfalls, the present study adopts a kind of interface element, namely a cohesive element, to simulate the fracture/breakup. Strain rate dependent experiments were carried out to obtain the fracture criteria, which were then applied to define the threshold for element-face split. Results show that it yields good agreement with experiment tests, including Split Hopkinson Pressure Bar (SHPB) on concrete specimen and breakup of concrete magazine upon detonation.
author2 Protective Technology Research Centre
author_facet Protective Technology Research Centre
Fan, S. C.
Yu, Q. J.
Lee, C. K.
format Article
author Fan, S. C.
Yu, Q. J.
Lee, C. K.
author_sort Fan, S. C.
title Simulation of fracture/breakup of concrete magazine using cohesive element
title_short Simulation of fracture/breakup of concrete magazine using cohesive element
title_full Simulation of fracture/breakup of concrete magazine using cohesive element
title_fullStr Simulation of fracture/breakup of concrete magazine using cohesive element
title_full_unstemmed Simulation of fracture/breakup of concrete magazine using cohesive element
title_sort simulation of fracture/breakup of concrete magazine using cohesive element
publishDate 2014
url https://hdl.handle.net/10356/101921
http://hdl.handle.net/10220/19813
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