TY - GEN
T1 - Numerical test method for random chopped fiber composites
AU - Pan, Yi
AU - Pelegri, Assimina A.
PY - 2010
Y1 - 2010
N2 - A two-scale approach for numerical determination of composite material constants using a finite element model is developed. A representative volume element is numerically generated using a modified sequential adsorption algorithm. To determine the strength of the composite material, progressive material degradation models are adopted for the matrix, fiber and the fiber/matrix interface. The epoxy resin is modeled with a modified von Mises criterion in which the effect of hydrostatic stress on yield is accounted for. The resin's elastic constants degrade with increasing loading application. The glass fiber is modeled as an isotropic material whose failure is governed by the maximum strain criterion. A traction-separation type cohesive zone model is applied at the fiber/matrix interface. Validation of the presented model is achieved by comparing numerical simulations with experimental data. The effective material constants that have been homogenized by the numerical test approach can be applied for future structural analysis.
AB - A two-scale approach for numerical determination of composite material constants using a finite element model is developed. A representative volume element is numerically generated using a modified sequential adsorption algorithm. To determine the strength of the composite material, progressive material degradation models are adopted for the matrix, fiber and the fiber/matrix interface. The epoxy resin is modeled with a modified von Mises criterion in which the effect of hydrostatic stress on yield is accounted for. The resin's elastic constants degrade with increasing loading application. The glass fiber is modeled as an isotropic material whose failure is governed by the maximum strain criterion. A traction-separation type cohesive zone model is applied at the fiber/matrix interface. Validation of the presented model is achieved by comparing numerical simulations with experimental data. The effective material constants that have been homogenized by the numerical test approach can be applied for future structural analysis.
KW - Effective material constants
KW - Finite element model
KW - Interfacial debonding
KW - Numerical method
KW - Progressive damage
UR - https://www.scopus.com/pages/publications/84881434470
UR - https://www.scopus.com/pages/publications/84881434470#tab=citedBy
U2 - 10.1115/IMECE2010-40693
DO - 10.1115/IMECE2010-40693
M3 - Conference contribution
SN - 9780791844465
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 599
EP - 604
BT - ASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Y2 - 12 November 2010 through 18 November 2010
ER -