Development of a molecular dynamic based cohesive zone model for prediction of an equivalent material behavior for Al/Al2O3 composite

Sazgar, Amir Arvin; Movahhedy, Mohammad R.; Mahnama, Maryam; Sohrabpour, Saeed

doi:10.1016/j.msea.2016.10.001

Cited by 31 publications

(11 citation statements)

References 35 publications

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“…Some researchers used the Finite Element Method (FEM) to simulate the mechanical behavior of concrete repaired by epoxy, but the model is purely mechanical and timeindependent [10]. At the atomistic scale, Molecular Dynamics (MD) can be used to measure the cohesive strength of the interface between a metallic or ceramic substrate and epoxy [11,12,13], and to predict the moisture transport processes in epoxy materials [14]. MD allows simulating damage initiation and propagation in a broad range of interface systems.…”

Section: Introductionmentioning

confidence: 99%

Tensile strength of calcite/HMWM and silica/HMWM interfaces: A Molecular Dynamics analysis

Arson

2020

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Tensile strength of calcite/HMWM and silica/HMWM interfaces: A Molecular Dynamics analysis

Arson

2020

Construction and Building Materials

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“…For Al-MMC composites, the CZM constants have been reported in different ranges in the previous studies (Ref 13 , 59 - 62 ). For example, the reported values for the interface strength vary from a quantity on the order of MPa (Ref 61 ) to GPa (Ref 62 ). The values in Table 3 were selected to establish the best match between the experimental and numerical outcomes in this research study.…”

Section: Numerical Methodologymentioning

confidence: 95%

“…The CZM constants used in this study are presented in Table 3. For Al-MMC composites, the CZM constants have been reported in different ranges in the previous studies (Ref 13,[59][60][61][62]. For example, the reported values for the interface strength vary from a quantity on the order of MPa (Ref 61) to GPa ( Ref 62).…”

Section: The Jh2 Model For Particle Crackingmentioning

confidence: 99%

3D Microstructure-Based Finite Element Simulation of Cold-Sprayed Al-Al2O3 Composite Coatings Under Quasi-Static Compression and Indentation Loading

et al. 2021

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This study developed microstructure-based finite element (FE) models to investigate the behavior of cold-sprayed aluminum–alumina (Al-Al 2 O 3 ) metal matrix composite (MMC) coatings subject to indentation and quasi-static compression loading. Based on microstructural features (i.e., particle weight fraction, particle size, and porosity) of the MMC coatings, 3D representative volume elements (RVEs) were generated by using Digimat software and then imported into ABAQUS/Explicit. State-of-the-art physics-based modeling approaches were incorporated into the model to account for particle cracking, interface debonding, and ductile failure of the matrix. This allowed for analysis and informing on the deformation and failure responses. The model was validated with experimental results for cold-sprayed Al-34 wt.% Al 2 O 3 and Al-46 wt.% Al 2 O 3 metal matrix composite coatings under quasi-static compression by comparing the stress versus strain histories and observed failure mechanisms (e.g., matrix ductile failure). The results showed that the computational framework is able to capture the response of this cold-sprayed material system under compression and indentation, both qualitatively and quantitatively. The outcomes of this work have implications for extending the model to materials design and for applications involving different types of loading in real-world application (e.g., erosion and fatigue).

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“…After that, MD-CFEM has also been used to simulate the inter-facial fracture behavior of aluminum-based ink coating by Jiang et al [27]. Elkhateeb et al simulated the inter-facial fracture behavior of Ti 6 Al 4 V/TiC at different temperatures [28] and Sazgar et al analyzed the interface failure behavior of Al/Al 2 O 3 composites [29] by MD-CFEM. Although the above studies have transmitted microscopic characteristics to macroscopic simulation, however, the research is still focus on the macro crack analysis by CFEM while MD is only used to calculate the parameters of T-S curve, and the micro-crack initiation can not be realized.…”

Section: Introductionmentioning

confidence: 99%

A multi-grid sampling multi-scale method for crack initiation and propagation

Cheng¹,

Wang²

2021

Preprint

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In this study, a multi-grid sampling multi-scale (MGSMS) method is proposed by coupling with finite element (FEM), extended finite element (XFEM) and molecular dynamics (MD) methods.Crack is studied comprehensively from microscopic initiations to macroscopic propagation by MGSMS method. In order to establish the coupling relationship between macroscopic and microscopic model, multi-grid FEM is used to transmit the macroscopic displacement boundary conditions to the atomic model and the multi-grid XFEM is used to feedback the microscopic crack initiations to the macroscopic model. Moreover, an image recognition based crack extracting method is proposed to extract the crack coordinate from the MD result files of efficiently and the Latin hypercube sampling method is used to reduce the computational cost of MD. Numerical results show that MGSMS method can be used to calculate micro-crack initiations and transmit it to the macro-crack model. The crack initiation and propagation simulation of plate under mode I loading is completed.

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Development of a molecular dynamic based cohesive zone model for prediction of an equivalent material behavior for Al/Al2O3 composite

Cited by 31 publications

References 35 publications

Tensile strength of calcite/HMWM and silica/HMWM interfaces: A Molecular Dynamics analysis

Tensile strength of calcite/HMWM and silica/HMWM interfaces: A Molecular Dynamics analysis

3D Microstructure-Based Finite Element Simulation of Cold-Sprayed Al-Al2O3 Composite Coatings Under Quasi-Static Compression and Indentation Loading

A multi-grid sampling multi-scale method for crack initiation and propagation

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