On the modeling of delamination in thick composites Conference Paper uri icon

abstract

  • The layer-wise laminate theory of Reddy is used to develop a layer-wise, two-dimensional, displacement-based, finite element model of laminated composite plates that provides a convenient format for modeling multiple delaminations. The resulting layer-wise model is capable of computing interlaminar stresses, free edge effects, and energy release rates with the same accuracy as a conventional 3-D finite element model. Although the total degrees of freedom are comparable in both models, the layer-wise, two-dimensional format allows faster computation of the element stiffness matrices. Two example problems are provided to illustrate the accuracy of the present model in computing interlaminar stresses and energy release rates for laminates in bending and extension.

author list (cited authors)

  • Robbins, D. H., Reddy, J. N., & Murty, A.

publication date

  • December 1991