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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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 |
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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 |
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© 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. |
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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 |
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2018 |
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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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