TY - JOUR

T1 - Modeling the inelastic deformation and fracture of polymer composites - Part II

T2 - Smeared crack model

AU - Camanho, P. P.

AU - Bessa, M. A.

AU - Catalanotti, G.

AU - Vogler, M.

AU - Rolfes, R.

N1 - Funding information: Effort sponsored by the Air Force Office of Scientific Research, Air Force Material Command, USAF, under Grant No. FA8655-06-1-3072. The US Government is authorized to reproduce and distribute reprints for Governmental purposed notwithstanding any copyright notation thereon. The first author acknowledges the support of Airbus under the integrated method for the structural design of Composite components (iComp) project, the second author acknowledges the support of the Fulbright program, and the third author acknowledges the support of the Fundação para a Ciência e a Tecnologia under the grant FCT-DFRH-SFRH-BPD-78104-2011.

PY - 2012/12/20

Y1 - 2012/12/20

N2 - This paper describes and validates a new fully three-dimensional smeared crack model to predict the onset and propagation of ply failure mechanisms in polymer composites reinforced by unidirectional fibers. The failure criteria are used to predict not only the onset of the failure mechanisms but also the orientation of the fracture plane. This information is used in a smeared crack model for transverse cracking that imposes a linear softening relation between the traction acting on the fracture planes and the crack opening displacements. The longitudinal failure mechanisms are represented using bi-linear softening relations. The model is validated using off-axis compression tests performed in unidirectional specimens as well as using tensile tests in notched multidirectional laminates. A good correlation between experimental observations and numerical predictions is obtained.

AB - This paper describes and validates a new fully three-dimensional smeared crack model to predict the onset and propagation of ply failure mechanisms in polymer composites reinforced by unidirectional fibers. The failure criteria are used to predict not only the onset of the failure mechanisms but also the orientation of the fracture plane. This information is used in a smeared crack model for transverse cracking that imposes a linear softening relation between the traction acting on the fracture planes and the crack opening displacements. The longitudinal failure mechanisms are represented using bi-linear softening relations. The model is validated using off-axis compression tests performed in unidirectional specimens as well as using tensile tests in notched multidirectional laminates. A good correlation between experimental observations and numerical predictions is obtained.

KW - Polymer-matrix composites (PMCs)

UR - http://www.scopus.com/inward/record.url?scp=84872423260&partnerID=8YFLogxK

U2 - 10.1016/j.mechmat.2012.12.001

DO - 10.1016/j.mechmat.2012.12.001

M3 - Article

AN - SCOPUS:84872423260

VL - 59

SP - 36

EP - 49

JO - Mechanics of materials

JF - Mechanics of materials

SN - 0167-6636

ER -