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Deformation mechanism of graphene in amorphous polyethylene: A molecular dynamics based study

The current paper focuses on investigating deformation mechanism of graphene sheets in a graphene reinforced polyethylene (Gn–PE) nanocomposite. Classical molecular dynamics (MD) simulation was conducted on large Gn–PE systems. Different spatial arrangements of graphene sheets were considered in order to study the effect of nonlocal interaction among the graphenes. In all the cases 5% weight concentration of graphene was considered in order to prepare atomistic models for Gn–PE.

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A multiscale modeling scheme based on peridynamic theory

A multiscale modeling scheme based on peridynamic theory

Rezwanur Rahman

Postdoctoral fellow, Center for simualtion, visualization and real time prediction (SiViRt), University of Texas at San Antonio)

John Foster

Assistant Professor, Department of Mechanical Engineering, University of Texas at San Antonio

Anwarul Haque

Associate Professor, Department of Aerospace Engineering and Mechanics, University of Alabama

ABSTRACT

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Stochastic modeling of damage evolution in composites under environmental ageing

Stochastic modeling of damage evolution in composites under environmental ageing

R. Rahman, A. Haque, Z. Wu

Journal of Engineering Mathematics

April 2013, Volume 79, Issue 1, pp 153-166

Abstract

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Ab-initio adsorption study of chitosan on functionalized graphene

Ab-initio adsorption study of chitosan on functionalized graphene: critical role of van der Waals interactions.

R Rahman, D. Mazumdar

Abstract

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Papers on MD simulation and multiscale modeling of polymer based nanocomposites


Dear Colleagues,

 I am glad to share my papers on MD simulation and multiscale moldeling of polymer based nanocomposites. 
 
MD simulation of graphene-epoxy nanocomposites:

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About a work on theoretical modeling

Hi

I am a graduate student at University of Alabama. I am working on Stochastic modeling of damage evolution. Recently I have finished the mathematical/theoretical modeling section. I haven't done any Numerical or FEA simulation or experimental analysis. In this first phase I emphasized on the mathematical formulation and some short proofs. I wish to submit this work to a relevent journal. Can anyone please let me know if there is any suitable journal for this kind purely theoretical as well as solid/applied mechanics work related to stochastic modeling of damage mechanics?

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About ABAQUS UMAT

Hi

I am working on probailistic modeling of damages in composite materials. I have my own developed mathematical model for calculating damage probability. Now I am trying to use this model in ABAQUS to see the effect of damages with a certain probability. Please kindly let me know if there is any reference code or tutorial for UMAT where I can apply the damages with different probabilities.

Thanks in Advance

 

Rezwanur Rahman

The University of Alabama

USA 

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