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Modeling Ductile/Brittle Behavior in Polymeric Microlaminates: Effect of Volume Fraction

Published online by Cambridge University Press:  26 February 2011

Rajdeep Sharma ,
Mary C. Boyce  and
Simona Socrate
Rajdeep Sharma
Affiliation:
rajdeep@mit.edu, General Electric, Corporate R&D, Room K1-4B18, 1 Research Circle, Niskayuna, NY, 12309, United States, 518-387-7069
Mary C. Boyce
Affiliation:
mcboyce@mit.edu, Massachusetts Institute of Technology, Mechanical Engineering, 77 Massachusetts Avenue, Cambridge, MA, 02139, United States
Simona Socrate
Affiliation:
ssocrate@mit.edu, Massachusetts Institute of Technology, Mechanical Engineering, 77 Massachusetts Avenue, Cambridge, MA, 02139, United States
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Abstract

In this work we present a micromechanical model for two-phase ductile/brittle laminates that captures the macroscopic behavior, as well as the underlying micro-mechanisms of deformation and failure, in particular the synergy between the inelastic deformation mechanisms of crazing and shear yielding. The finite element implementation of our model considers a three-dimensional representative volume element (RVE), and incorporates continuum-based physics-inspired descriptions of shear yielding and crazing, along with failure criteria for the ductile and brittle layers. The interface between the ductile and brittle layers is assumed to be perfectly bonded. The model successfully explains the volume fraction effect on the micro and macromechanics of ductile/brittle microlaminates subjected to uniaxial tension.

Keywords

toughnesscompositepolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 977: Symposium FF – Processing-Structure-Mechanical Property Relations in Composite Materials , 2006 , 977-FF11-06
Copyright
Copyright © Materials Research Society 2007

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