Polymer interfacial fracture simulations using cohesive elements

Rahulkumar, Pakal; Jagota, Anand; Bennison, Stephen J.; Saigal, Sunil; Muralidhar, S.

doi:10.1016/s1359-6454(99)00276-1

Cited by 92 publications

(30 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…At ambient temperatures (21 C and 30 C), the ratedependent fracture behavior is obvious, and the fracture energy increases as the loading rates become higher. The trend is in accordance with what has been reported in several studies that have attempted to characterize the rate-related fracture behavior of adhesive and polymeric materials [31][32][33]. In those studies, fracture energy tends to be constant when cracks propagate at lower speeds, whereas it increases with crack velocity for an intermediate level of crack velocity.…”

Section: Discussion Of Test-analysis Resultssupporting

confidence: 91%

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Kim

Ban

2013

Journal of Testing and Evaluation

View full text Add to dashboard Cite

Cracking in asphaltic pavement layers causes primary failure of the roadway structure, and the fracture resistance and characteristics of asphalt mixtures significantly influence the service life of asphaltic roadways. A better understanding of the fracture process is considered a necessary step to the proper development of design-analysis procedures for asphaltic mixtures and pavement structures. However, such effort involves many challenges because of the complex nature of asphaltic materials. In this study, experiments were conducted using uniaxial compressive specimens to characterize the linear viscoelastic properties and semi-circular bending (SCB) specimens to characterize fracture behavior of a typical dense-graded asphalt paving mixture subjected to various loading rates and at different temperatures. The SCB fracture test was also incorporated with a digital image correlation (DIC) system and finite-element model simulations including material viscoelasticity and cohesive-zone fracture to effectively capture local fracture processes and resulting fracture properties. The test results and model simulations clearly demonstrate that: (1) the rate-and temperature-dependent fracture characteristics need to be identified at the local fracture process zone, and (2) the rate-and temperature-dependent fracture properties are necessary in the structural design of asphaltic pavements with which a wide range of strain rates and service temperatures is usually associated.

show abstract

Section: Discussion Of Test-analysis Resultssupporting

confidence: 91%

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Kim

Ban

2013

Journal of Testing and Evaluation

View full text Add to dashboard Cite

show abstract

“…In order to understand the mechanics of the peeling and demolding processes, researchers have often relied on numerical simulations. Since the use of the CZM coupled with the finite element method (FEM) by Hillerborg et al [19] to study fracture problems, significant progress has been made in modeling interfacial debonding/delamination of a polymer interlayer [20][21][22][23]. However, there has been limited research [8,24,25] on capturing progressive interfacial debonding undulations using the CZM.…”

Section: Introductionmentioning

confidence: 99%

Debonding of confined elastomeric layer using cohesive zone model

Mukherjee

Dillard

Moore

et al. 2016

International Journal of Adhesion and Adhesives

View full text Add to dashboard Cite

a b s t r a c tWavy or undulatory debonding is often observed when a confined/sandwiched elastomeric layer is pulled off from a stiff adherend. Here we analyze this debonding phenomenon using a cohesive zone model (CZM). Using stability analysis of linear equations governing plane strain quasi-static deformations of an elastomer, we find (i) a non-dimensional number relating the elastomer layer thickness, h, the long term Young's modulus, E 1 , of the interlayer material, the peak traction, T c , in the CZM bilinear tractionseparation (TS) relation, and the fracture energy, G c , of the interface between the adherend and the elastomer layer, and (ii) the critical value of this number that provides a necessary condition for undulations to occur during debonding. For the elastomer modeled as a linear viscoelastic material with the shear modulus given by a Prony series and a rate-independent bilinear TS relation in the CZM, the stability analysis predicts that a necessary condition for a wavy solution is that T c 2 h=G c E 1 exceed 4:15.This is supported by numerically solving governing equations by the finite element method (FEM). Lastly, we use the FEM to study three-dimensional deformations of the peeling (induced by an edge displacement) of a flexible plate from a thin elastomeric layer perfectly bonded to a rigid substrate. These simulations predict progressive debonding with a fingerlike front for sufficiently confined interlayers when the TS parameters satisfy a constraint similar to that found from the stability analysis of the plane strain problem.

show abstract

“…The most straightforward application of cohesive modelling is to problems where predefined interfaces exist [4][5][6][7][8][9][10][11][12][13][14][15]. In such analyses, the fracture path is assumed a priori and can usually be justified by the nature of the problem (e.g.…”

mentioning

confidence: 99%

Spatial convergence of crack nucleation using a cohesive finite-element model on a pinwheel-based mesh

Papoulia

Vavasis

Ganguly

2006

Int. J. Numer. Meth. Engng

View full text Add to dashboard Cite

SUMMARYWe consider the use of initially rigid cohesive interface models in a two-dimensional dynamic finiteelement solution of a fracture process. Our focus is on convergence of finite-element solutions to a solution of the undiscretized medium as the mesh spacing x (and therefore time-step t) tends to zero. We propose the use of pinwheel meshes, which possess the 'isoperimetric property' that for any curve C in the computational domain, there is an approximation to C using mesh edges that tends to C including a correct representation of its length, as the grid size tends to zero. We suggest that the isoperimetric property is a necessary condition for any possible spatial convergence proof in the general case that the crack path is not known in advance. Conversely, we establish that if the pinwheel mesh is used, the discrete interface first activated in the finite-element model will converge to the initial crack in the undiscretized medium. Finally, we carry out a mesh refinement experiment to check convergence of both nucleation and propagation. Our results indicate that the crack path computed in the pinwheel mesh is more stable as the mesh is refined compared to other types of meshes.

show abstract

Polymer interfacial fracture simulations using cohesive elements

Cited by 92 publications

References 14 publications

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Debonding of confined elastomeric layer using cohesive zone model

Spatial convergence of crack nucleation using a cohesive finite-element model on a pinwheel-based mesh

Contact Info

Product

Resources

About