Transition to unstable crack growth in a double-cantilever specimen

1987 ◽  
Vol 19 (8) ◽  
pp. 1041-1045
Author(s):  
A. Ya. Krasovskii ◽  
I. V. Orynyak ◽  
V. M. Torop
Keyword(s):  
Crack Growth ◽  
Unstable Crack ◽  
Unstable Crack Growth

Modeling Stable and Unstable Crack Growth Observed in Quasi-Static Adhesively Bonded Beam Tests

2004 ◽  
Author(s):  
Rakesh K. Kapania ◽  
Dhaval P. Makhecha ◽  
Eric R. Johnson ◽  
Josh Simon ◽  
David A. Dillard
Keyword(s):  
Crack Growth ◽  
Cohesive Zone Model ◽  
Computational Study ◽  
Stable Crack Growth ◽  
Epoxy Adhesive ◽  
Zone Model ◽  
Adhesively Bonded ◽  
Unstable Crack ◽  
Interface Elements ◽  
Unstable Crack Growth

An experimental and computational study of an adhesively bonded, double cantilevered beam (DCB) under quasi-static loading is presented. The polymeric adhesives are either an acrylic or an epoxy, and the adherends are 6061 aluminum alloy. DCB tests bonded with the acrylic exhibited stable crack growth, while the DCB tests bonded with the epoxy exhibited unstable crack growth. The responses of the DCB test speciments were modeled in the ABAQUS/Standard® software package. Interface finite elements were located between bulk elements to model crack initiation and crack growth in the adhesive. These interface elements are implemented as user-defined elements in ABAQUS®, and the material law relating the interfacial tractions to the separation displacements is based on a cohesive zone model (CZM). Using interface elements only to model the acrylic adhesive, the simulation correlates very well to the test. Good correlation between the simulation and the test for the epoxy adhesive is achieved if both bulk modeling of the adhesive and inertia of the specimen are included.

Sign in / Sign up

Export Citation Format

Share Document