A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites

The modeling of mixed-mode fracture within the phase field (PF) framework poses a challenge due to the difficulties in incorporating a reasonable mixed-mode cohesive law. This work proposes an innovative phase-field formulation to characterize mixed-mode cohesive fracture behaviors in fiber-reinforc...

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Main Authors: Wang, Liang, Su, Haibo, Zhou, Kun
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/177965
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1779652024-06-03T07:50:29Z A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites Wang, Liang Su, Haibo Zhou, Kun School of Mechanical and Aerospace Engineering Engineering Phase-field model Mixed-mode fracture The modeling of mixed-mode fracture within the phase field (PF) framework poses a challenge due to the difficulties in incorporating a reasonable mixed-mode cohesive law. This work proposes an innovative phase-field formulation to characterize mixed-mode cohesive fracture behaviors in fiber-reinforced composites (FRCs). The framework commences with the development of a multi-phase-field model capable of considering different failure mechanisms in FRCs within a thermodynamically consistent framework. Subsequently, a mixed-mode cohesive zone model (CZM) featuring the linear traction-separation law (TSL) is derived based on the careful construction of the PF driving force and degradation function. We mathematically prove that the proposed CZM effectively and rigorously characterizes the Hashin failure criteria for crack initiation and the power law criterion for crack propagation. Finally, several benchmark examples involving Mode-I/II and mixed-mode failures are investigated to demonstrate the model's capability in accurately predicting the cohesive fracture behaviors in FRCs, encompassing both the failure mechanisms dominated by fiber and matrix. This work paves the way for the PF modeling of fracture in FRCs that have previously been analyzed with sophisticated CZM-based approaches. This work was supported by the National Natural Science Foundation of China (No. 12102256). 2024-06-03T07:50:29Z 2024-06-03T07:50:29Z 2024 Journal Article Wang, L., Su, H. & Zhou, K. (2024). A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites. Computer Methods in Applied Mechanics and Engineering, 421, 116753-. https://dx.doi.org/10.1016/j.cma.2024.116753 0045-7825 https://hdl.handle.net/10356/177965 10.1016/j.cma.2024.116753 2-s2.0-85183207745 421 116753 en Computer Methods in Applied Mechanics and Engineering © 2024 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
Phase-field model
Mixed-mode fracture
spellingShingle Engineering
Phase-field model
Mixed-mode fracture
Wang, Liang
Su, Haibo
Zhou, Kun
A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
description The modeling of mixed-mode fracture within the phase field (PF) framework poses a challenge due to the difficulties in incorporating a reasonable mixed-mode cohesive law. This work proposes an innovative phase-field formulation to characterize mixed-mode cohesive fracture behaviors in fiber-reinforced composites (FRCs). The framework commences with the development of a multi-phase-field model capable of considering different failure mechanisms in FRCs within a thermodynamically consistent framework. Subsequently, a mixed-mode cohesive zone model (CZM) featuring the linear traction-separation law (TSL) is derived based on the careful construction of the PF driving force and degradation function. We mathematically prove that the proposed CZM effectively and rigorously characterizes the Hashin failure criteria for crack initiation and the power law criterion for crack propagation. Finally, several benchmark examples involving Mode-I/II and mixed-mode failures are investigated to demonstrate the model's capability in accurately predicting the cohesive fracture behaviors in FRCs, encompassing both the failure mechanisms dominated by fiber and matrix. This work paves the way for the PF modeling of fracture in FRCs that have previously been analyzed with sophisticated CZM-based approaches.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Wang, Liang
Su, Haibo
Zhou, Kun
format Article
author Wang, Liang
Su, Haibo
Zhou, Kun
author_sort Wang, Liang
title A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
title_short A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
title_full A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
title_fullStr A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
title_full_unstemmed A phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
title_sort phase-field model for mixed-mode cohesive fracture in fiber-reinforced composites
publishDate 2024
url https://hdl.handle.net/10356/177965
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