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contributor authorGhareeb, Ahmed
contributor authorElbanna, Ahmed
date accessioned2022-02-06T05:36:02Z
date available2022-02-06T05:36:02Z
date copyright7/21/2021 12:00:00 AM
date issued2021
identifier issn0021-8936
identifier otherjam_88_11_111007.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4278369
description abstractSoft materials, such as rubber and gels, exhibit rate-dependent response where the stiffness, strength, and fracture patterns depend largely on loading rates. Thus, accurate modeling of the mechanical behavior requires accounting for different sources of rate dependence such as the intrinsic viscoelastic behavior of the polymer chains and the dynamic bond breakage and formation mechanism. In this chapter, we extend the QC approach presented in Ghareeb and Elbanna (2020, An Adaptive Quasi-Continuum Approach for Modeling Fracture in Networked Materials: Application to Modeling of Polymer Networks, J. Mech. Phys. Solids, 137, p. 103819) to include rate-dependent behavior of polymer networks. We propose a homogenization rule for the viscous forces in the polymer chains and update the adaptive mesh refinement algorithm to account for dynamic bond breakage. Then, we use nonlinear finite element framework with predictor–corrector scheme to solve for the nodal displacements and velocities. We demonstrate the accuracy of the method by verifying it against fully discrete simulations for different examples of network structures and loading conditions. We further use the method to investigate the effects of the loading rates on the fracture characteristics of networks with different rate-dependent parameters. Finally, We discuss the implications of the extended method for multiscale analysis of fracture in rate-dependent polymer networks.
publisherThe American Society of Mechanical Engineers (ASME)
titleModeling Fracture in Rate-Dependent Polymer Networks: A Quasicontinuum Approach
typeJournal Paper
journal volume88
journal issue11
journal titleJournal of Applied Mechanics
identifier doi10.1115/1.4051658
journal fristpage0111007-1
journal lastpage0111007-11
page11
treeJournal of Applied Mechanics:;2021:;volume( 088 ):;issue: 011
contenttypeFulltext


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