TY - JOUR
T1 - Experimental characterization of composites to support an orthotropic plasticity material model
AU - Khaled, Bilal
AU - Shyamsunder, Loukham
AU - Hoffarth, Canio
AU - Rajan, Subramaniam
AU - Goldberg, Robert K.
AU - Carney, Kelly S.
AU - DuBois, Paul
AU - Blankenhorn, Gunther
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Test procedures for characterizing the orthotropic behavior of a unidirectional composite at room temperature and quasi-static loading conditions are developed and discussed. The resulting data consisting of 12 stress–strain curves and associated material parameters are used in a newly developed material model—an orthotropic elasto-plastic constitutive model that is driven by tabulated stress–strain curves and other material properties that allow for the elastic and inelastic deformation model to be combined with damage and failure models. A unidirectional composite—T800/F3900, commonly used in the aerospace industry, is used to illustrate how the experimental procedures are developed and used. The generated data are then used to model a dynamic impact test. Results show that the developed framework implemented into a special version of LS-DYNA yields reasonably accurate predictions of the structural behavior.
AB - Test procedures for characterizing the orthotropic behavior of a unidirectional composite at room temperature and quasi-static loading conditions are developed and discussed. The resulting data consisting of 12 stress–strain curves and associated material parameters are used in a newly developed material model—an orthotropic elasto-plastic constitutive model that is driven by tabulated stress–strain curves and other material properties that allow for the elastic and inelastic deformation model to be combined with damage and failure models. A unidirectional composite—T800/F3900, commonly used in the aerospace industry, is used to illustrate how the experimental procedures are developed and used. The generated data are then used to model a dynamic impact test. Results show that the developed framework implemented into a special version of LS-DYNA yields reasonably accurate predictions of the structural behavior.
KW - impact simulation
KW - material characterization tests
KW - Orthotropic composite
KW - stress–strain curves
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U2 - 10.1177/0021998317733319
DO - 10.1177/0021998317733319
M3 - Article
AN - SCOPUS:85045241323
SN - 0021-9983
JO - Journal of Composite Materials
JF - Journal of Composite Materials
ER -