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3D Progressive Damage Modeling for Laminated Composite Based on Crack Band Theory and Continuum Damage MechanicsA simple continuum damage mechanics (CDM) based 3D progressive damage analysis (PDA) tool for laminated composites was developed and implemented as a user defined material subroutine to link with a commercially available explicit finite element code. This PDA tool uses linear lamina properties from standard tests, predicts damage initiation with an easy-to-implement Hashin-Rotem failure criteria, and in the damage evolution phase, evaluates the degradation of material properties based on the crack band theory and traction-separation cohesive laws. It follows Matzenmiller et al.'s formulation to incorporate the degrading material properties into the damaged stiffness matrix. Since nonlinear shear and matrix stress-strain relations are not implemented, correction factors are used for slowing the reduction of the damaged shear stiffness terms to reflect the effect of these nonlinearities on the laminate strength predictions. This CDM based PDA tool is implemented as a user defined material (VUMAT) to link with the Abaqus/Explicit code. Strength predictions obtained, using this VUMAT, are correlated with test data for a set of notched specimens under tension and compression loads.
Document ID
20160006279
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Wang, John T. (NASA Langley Research Center Hampton, VA, United States)
Pineda, Evan J. (NASA Glenn Research Center Cleveland, OH, United States)
Ranatunga, Vipul (Air Force Research Lab. Dayton, OH, United States)
Smeltzer, Stanley S. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
May 16, 2016
Publication Date
September 28, 2015
Subject Category
Composite Materials
Report/Patent Number
NF1676L-20682
Meeting Information
Meeting: Annual Technical Conference of the American Society for Composites
Location: East Lansing, MI
Country: United States
Start Date: September 28, 2015
End Date: September 30, 2015
Sponsors: American Society for Composites
Funding Number(s)
WBS: WBS 826611.04.07.01
Distribution Limits
Public
Copyright
Public Use Permitted.

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