An analytical method for predicting mode-I crack propagation process and resistance curve of rock and concrete materials

Wang, Hongwei; Wu, Zhenlin; Wang, Yan-Jie; Yu, Rena C.

doi:10.1016/j.tafmec.2019.01.019

Cited by 42 publications

(5 citation statements)

References 33 publications

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“…The R-value is also known as the resistance to crack extension and is constant for a material. The R-value, as measured by the ASTM standard, is limited by the size of the specimen and the R-value will vary with crack growth [ 16 , 31 ]. However, according to Griffith’s theory, the resistance to crack extension is the surface energy of the material.…”

Section: Discussionmentioning

confidence: 99%

An Experimental Study of the Relation between Mode I Fracture Toughness, KIc, and Critical Energy Release Rate, GIc

Qiao

Zhang

2023

Materials

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The construction of the relation between the critical energy release rate, GIc, and the mode I fracture toughness, KIc, is of great significance for understanding the fracture mechanism and facilitating its application in engineering. In this study, fracture experiments using NSCB and CCCD specimens were conducted. The effects of specimen sizes, loading rate and lithology on the relation between GIc and KIc were studied. GIc was calculated by integrating the load–displacement curve according to Irwin’s approach. Based on the measured KIc and GIc of the rock specimens, a relation between GIc and KIc was found to be different from the classical formula under linear elasticity. It was found that both specimen size and loading rate do not influence this relation.

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Section: Discussionmentioning

confidence: 99%

An Experimental Study of the Relation between Mode I Fracture Toughness, KIc, and Critical Energy Release Rate, GIc

Qiao

Zhang

2023

Materials

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“…In test standards, most test objects of fracture toughness and fatigue crack growth are unidirectional FRP composite laminates. The influence of fiber bridging [72] on the critical SERR (G C ) is artificially introduced, which can obtain a complete R-curve [73,74]. From the initial stage of a fiber bridging region [75], the critical SERR increases and eventually tends to a stable value.…”

Section: Fiber Bridging Effectmentioning

confidence: 99%

Review and Assessment of Fatigue Delamination Damage of Laminated Composite Structures

Deng,

Zhou,

et al. 2023

Materials

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Fatigue delamination damage is one of the most important fatigue failure modes for laminated composite structures. However, there are still many challenging problems in the development of the theoretical framework, mathematical/physical models, and numerical simulation of fatigue delamination. What is more, it is essential to establish a systematic classification of these methods and models. This article reviews the experimental phenomena of delamination onset and propagation under fatigue loading. The authors reviewed the commonly used phenomenological models for laminated composite structures. The research methods, general modeling formulas, and development prospects of phenomenological models were presented in detail. Based on the analysis of finite element models (FEMs) for laminated composite structures, several simulation methods for fatigue delamination damage models (FDDMs) were carefully classified. Then, the whole procedure, range of applications, capability assessment, and advantages and limitations of the models, which were based on four types of theoretical frameworks, were also discussed in detail. The theoretical frameworks include the strength theory model (SM), fracture mechanics model (FM), damage mechanics model (DM), and hybrid model (HM). To the best of the authors’ knowledge, the FDDM based on the modified Paris law within the framework of hybrid fracture and damage mechanics is the most effective method so far. However, it is difficult for the traditional FDDM to solve the problem of the spatial delamination of complex structures. In addition, the balance between the cost of acquiring the model and the computational efficiency of the model is also critical. Therefore, several potential research directions, such as the extended finite element method (XFEM), isogeometric analysis (IGA), phase-field model (PFM), artificial intelligence algorithm, and higher-order deformation theory (HODT), have been presented in the conclusions. Through validation by investigators, these research directions have the ability to overcome the challenging technical issues in the fatigue delamination prediction of laminated composite structures.

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“…In existing test standards, most test objects of fracture toughness and fatigue crack growth are unidirectional FRP composite laminates. The influence of fiber bridging [56] on the critical SERR GC is artificially introduced, which can obtain a complete R-curve [57,58]. From the initial stage of fiber bridging region [59], the critical SERR of delamination gradually increases and eventually tends to a stable value.…”

Section: Fiber Bridging Effectmentioning

confidence: 99%

Review and Assessment on Fatigue Delamination Damage of Laminated Composite Structures

Deng,

Zhou,

et al. 2023

Preprint

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The fatigue delamination damage is one of the most important fatigue failure modes of laminated composite structures. However, the developments of the theoretical framework, mathematical/physical model and numerical simulation of fatigue delamination are still challenging issues, and there is a lack of systematic classification. This article reviews the experimental phenomena of the onset and propagation stage of delamination under fatigue loading, and summarizes the commonly used phenomenological models for laminated composite structures. The research methods, general modeling formulas and development prospects of the phenomenological models are presented in detail. In the light of the analysis of finite element model (FEM) for the laminated composite structures, a number of simulation methods of fatigue delamination crack propagation damage model are carefully classified. Furthermore, within the theoretical framework of strength theory model (SM), fracture mechanics model (FM), damage mechanics model (DM) and hybrid model (HM), the complete procedure, application, capability assessment, advantages and limitations of the models are also discussed in detail. Finally, several valuable suggestions are given for the research interests, and challenging technical problems that need to be overcome on the fatigue delamination prediction of laminated composite structures in the future.

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An analytical method for predicting mode-I crack propagation process and resistance curve of rock and concrete materials

Cited by 42 publications

References 33 publications

An Experimental Study of the Relation between Mode I Fracture Toughness, KIc, and Critical Energy Release Rate, GIc

An Experimental Study of the Relation between Mode I Fracture Toughness, KIc, and Critical Energy Release Rate, GIc

Review and Assessment of Fatigue Delamination Damage of Laminated Composite Structures

Review and Assessment on Fatigue Delamination Damage of Laminated Composite Structures

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