A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials

© 2017 In this research, a discrete modelling approach employing a new cohesive model is proposed to investigate the failure response of cemented materials. A cohesive model considering mixed-mode fracture is developed based on a generic thermodynamic framework for coupling damage mechanics and plas...

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Main Authors: Nhu H.T. Nguyen, Ha H. Bui, Giang D. Nguyen, J. Kodikara, S. Arooran, P. Jitsangiam
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/46840
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-468402018-04-25T07:23:24Z A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials Nhu H.T. Nguyen Ha H. Bui Giang D. Nguyen J. Kodikara S. Arooran P. Jitsangiam Materials Science Mathematics Agricultural and Biological Sciences © 2017 In this research, a discrete modelling approach employing a new cohesive model is proposed to investigate the failure response of cemented materials. A cohesive model considering mixed-mode fracture is developed based on a generic thermodynamic framework for coupling damage mechanics and plasticity theory. Discrete Element Method (DEM), a well-known computational method for simulating large deformation and cracking issues, is utilised as a numerical platform to facilitate the implementation of the proposed cohesive model. The nature of discrete modelling is analogous to the internal structure of cemented materials, making it more efficient compared with conventional continuum methods to characterise the failure behaviour of cemented materials. This combined cohesive-discrete modelling approach is then employed to simulate four experimental tests under different boundary conditions. Simulation results show excellent agreements with the experiments in terms of both macro force-displacement responses and cracking patterns, suggesting the effectiveness of the proposed modelling approach for conducting numerical experiments and exploring the failure mechanisms in cemented materials. 2018-04-25T07:02:58Z 2018-04-25T07:02:58Z 2017-06-15 Journal 00207683 2-s2.0-85017337670 10.1016/j.ijsolstr.2017.03.027 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85017337670&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46840
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Materials Science
Mathematics
Agricultural and Biological Sciences
spellingShingle Materials Science
Mathematics
Agricultural and Biological Sciences
Nhu H.T. Nguyen
Ha H. Bui
Giang D. Nguyen
J. Kodikara
S. Arooran
P. Jitsangiam
A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
description © 2017 In this research, a discrete modelling approach employing a new cohesive model is proposed to investigate the failure response of cemented materials. A cohesive model considering mixed-mode fracture is developed based on a generic thermodynamic framework for coupling damage mechanics and plasticity theory. Discrete Element Method (DEM), a well-known computational method for simulating large deformation and cracking issues, is utilised as a numerical platform to facilitate the implementation of the proposed cohesive model. The nature of discrete modelling is analogous to the internal structure of cemented materials, making it more efficient compared with conventional continuum methods to characterise the failure behaviour of cemented materials. This combined cohesive-discrete modelling approach is then employed to simulate four experimental tests under different boundary conditions. Simulation results show excellent agreements with the experiments in terms of both macro force-displacement responses and cracking patterns, suggesting the effectiveness of the proposed modelling approach for conducting numerical experiments and exploring the failure mechanisms in cemented materials.
format Journal
author Nhu H.T. Nguyen
Ha H. Bui
Giang D. Nguyen
J. Kodikara
S. Arooran
P. Jitsangiam
author_facet Nhu H.T. Nguyen
Ha H. Bui
Giang D. Nguyen
J. Kodikara
S. Arooran
P. Jitsangiam
author_sort Nhu H.T. Nguyen
title A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
title_short A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
title_full A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
title_fullStr A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
title_full_unstemmed A thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
title_sort thermodynamics-based cohesive model for discrete element modelling of fracture in cemented materials
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85017337670&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/46840
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