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Y. Chen, B.A. Izzuddin, "A semi-explicit dynamic phase field model with domain decomposition based on dual partition super-elements", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Twelfth International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 8, Paper 5.5, 2024, doi:10.4203/ccc.8.5.5

Keywords: brittle fracture, dynamic phase field model, semi-explicit, parallel computing, domain decomposition methods, dual partition super-element.

Abstract

The phase field model has gained popularity in recent years as an elegant way to model fracture but suffers from issues of solvability and high computational cost. In this study, its computational efficiency is improved by extending a domain decomposition method that utilises dual partition super elements. This approach requires no additional parameters and is easily adaptable with minimal modifications. Furthermore, a semi-explicit integration scheme is developed as a robust method for tracing the dynamic equilibrium path. It is demonstrated based on the numerical example of a single notched plate that combining the semi-explicit scheme with the domain decomposition method can achieve significant speed up without a compromise in accuracy.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 8 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: P. Iványi, J. Kruis and B.H.V. Topping Paper 5.5 A semi-explicit dynamic phase field model with domain decomposition based on dual partition super-elements Y. Chen and B.A. Izzuddin Department of Civil and Environmental Engineering, Imperial College London, London, United Kingdom doi:10.4203/ccc.8.5.5 Full Bibliographic Reference for this paper Y. Chen, B.A. Izzuddin, "A semi-explicit dynamic phase field model with domain decomposition based on dual partition super-elements", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Twelfth International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 8, Paper 5.5, 2024, doi:10.4203/ccc.8.5.5 Keywords: brittle fracture, dynamic phase field model, semi-explicit, parallel computing, domain decomposition methods, dual partition super-element. Abstract The phase field model has gained popularity in recent years as an elegant way to model fracture but suffers from issues of solvability and high computational cost. In this study, its computational efficiency is improved by extending a domain decomposition method that utilises dual partition super elements. This approach requires no additional parameters and is easily adaptable with minimal modifications. Furthermore, a semi-explicit integration scheme is developed as a robust method for tracing the dynamic equilibrium path. It is demonstrated based on the numerical example of a single notched plate that combining the semi-explicit scheme with the domain decomposition method can achieve significant speed up without a compromise in accuracy. download the full-text of this paper (PDF, 1239 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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