Finite element implementation and application of a cohesive zone damage-healing model for self-healing materials

Alsheghri, Ammar; Al‐Rub, Rashid K. Abu

doi:10.1016/j.engfracmech.2016.06.010

Cited by 27 publications

(17 citation statements)

References 44 publications

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“…As a final remark, in the context of numerical simulations, understanding the dependence between the maximum tensile stress and the distance between the crack faces (COD) is a very valuable input data, for example, to feed a traction-separation law using cohesive elements in a finite element model, as it has recently been published [13].…”

Section: Tensile Test Resultsmentioning

confidence: 99%

Integral procedure to assess crack filling and mechanical contribution of polymer-based healing agent in encapsulation-based self-healing concrete

Gilabert

Tittelboom

Stappen

et al. 2017

Cement and Concrete Composites

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Section: Tensile Test Resultsmentioning

confidence: 99%

Integral procedure to assess crack filling and mechanical contribution of polymer-based healing agent in encapsulation-based self-healing concrete

Gilabert

Tittelboom

Stappen

et al. 2017

Cement and Concrete Composites

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“…Alsheghri and Abu Al‐Rub used the thermodynamic framework of Abu Al‐Rub and Darabi and Darabi et al, and adapted it for a cohesive zone elastic–damage–healing model. The cohesive crack healing model is based on the decomposition of the crack region into two parts, one representing undamaged material with the other simulating damaged and healing material components.…”

Section: The Simulation Of Mechanical Self‐healingmentioning

confidence: 99%

“…A parametric study was reported that aimed to determine the effect of the various model parameters. The second of these two papers reports on the implementation of the model in a finite element code and gives the results of a series of analyses for a set of poly(methyl methacrylate) (PMMA) fracture–healing tests on PMMA specimens tested by Jud and Kausch . The results from these numerical simulations are in generally good agreement with the experiment data.…”

Section: The Simulation Of Mechanical Self‐healingmentioning

confidence: 99%

Research Progress on Numerical Models for Self‐Healing Cementitious Materials

Jefferson

Javierre

Freeman

et al. 2018

Adv Materials Inter

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In this paper, research progress on numerical models for self‐healing cementitious materials (SHCMs) is discussed. Models developed specifically for SHCMs, as well as other relevant work, are considered. A summary of current self‐healing (SH) techniques is provided along with descriptions of the processes that govern their behavior. Models for mechanical self‐healing, transport processes in materials with embedded healing systems, fully coupled models, and other modeling techniques used to simulate SH behavior are discussed. The mechanics models discussed include those based on continuum–damage–healing mechanics (CDHM), micromechanics, as well as models that use discrete elements and particle methods. A considerable section is devoted to the simulation of carbonation in concrete since the essential mechanisms that govern this process are applicable to SH systems that employ calcite as a healing material. A number of transport models for simulating early‐age self‐healing are also considered. This highlights the fact that there are currently very few papers that describe fully coupled models, although a number of approaches that couple some aspects of transport and mechanical healing behavior are discussed. This article closes with a discussion that highlights the fact that many models are presented with limited or no experimental validation.

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“…On the other hand, Salib et al developed a hybrid computational approach using LSM and the hierarchical Bell model to investigate the mechanical properties and self-healing behaviour of nanogel particles connected by stable and labile bonds [28], and the same approach was used to address the problem of designing strong and tough biomimetic polymer networks with the capability of reforming links in their chain [29]. Guo et al focused on simulating the crack healing mechanism in hydrogels with chemical and physical crosslinks [30], and Alsheghri et al proposed a cohesive zone damage-healing model to be implemented in a finite element scheme to describe self-healing polymers [31]. Other approaches have concentrated on modelling of self-healing at the molecular scale, e.g.…”

Section: Introductionmentioning

confidence: 99%

Random fuse model in the presence of self-healing

2020

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Self-regeneration is a fundamental property of biological materials, leading to enhanced mechanical strength and toughness if subjected to stress and fatigue. Numerous efforts have been devoted to emulate this property and various self-healing materials have been designed with the aim of a practical adoption in construction and mechanical engineering. To achieve this, it is important to understand how damage evolution and fracture propagation are modified by self-healing and to evaluate how mechanical behaviour is affected before failure. In this paper, we implement for the first time a selfhealing procedure in the random fuse model, whose characteristic scaling properties have been widely studied in the literature on damage evolution modelling. We identify some characteristic signatures of self-healing, showing that it can delay the failure of a material undergoing loading, but it also lead to a hard-to-predict, more catastrophic breakdown.

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Finite element implementation and application of a cohesive zone damage-healing model for self-healing materials

Cited by 27 publications

References 44 publications

Integral procedure to assess crack filling and mechanical contribution of polymer-based healing agent in encapsulation-based self-healing concrete

Integral procedure to assess crack filling and mechanical contribution of polymer-based healing agent in encapsulation-based self-healing concrete

Research Progress on Numerical Models for Self‐Healing Cementitious Materials

Random fuse model in the presence of self-healing

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