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On the Theory and Numerical Simulation of Cohesive Crack Propagation with Application to Fiber-Reinforced CompositesThe phenomenon of crack propagation is among the predominant modes of failure in many natural and engineering structures, often leading to severe loss of structural integrity and catastrophic failure. Thus, the ability to understand and a priori simulate the evolution of this failure mode has been one of the cornerstones of applied mechanics and structural engineering and is broadly referred to as "fracture mechanics." The work reported herein focuses on extending this understanding, in the context of through-thickness crack propagation in cohesive materials, through the development of a continuum-level multiscale numerical framework, which represents cracks as displacement discontinuities across a surface of zero measure. This report presents the relevant theory, mathematical framework, numerical modeling, and experimental investigations of through-thickness crack propagation in fiber-reinforced composites using the Variational Multiscale Cohesive Method (VMCM) developed by the authors.
Document ID
20140000319
Document Type
Technical Publication (TP)
Authors
Rudraraju, Siva Shankar (Michigan Univ. Ann Arbor, MI, United States)
Garikipati, Krishna (Michigan Univ. Ann Arbor, MI, United States)
Waas, Anthony M. (Michigan Univ. Ann Arbor, MI, United States)
Bednarcyk, Brett A. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
January 17, 2014
Publication Date
August 1, 2013
Subject Category
Structural Mechanics
Report/Patent Number
NASA/TP-2013-217431
E-18123
Funding Number(s)
WBS: WBS 944244.04.02.03
Distribution Limits
Public
Copyright
Public Use Permitted.

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