... spectral methods microplane model fracture energy crack band model damage failure criteria In Part I of this study ( 1 ), a new three-dimensional constitutive model for transversely isotropic (unidirectional) composite laminates has been proposed in the framework of a kinematically constrained...

... or the crack band width in the crack band model. The crack band width can be roughly estimated from visual observations of fracture and typically equals 1.5 to 2 times the material inhomogeneity size (such as spacing of the weave of reinforcing fabric, spacing...