WIT Press

Application Of Strain Energy Release Rate Concept In The Study Of Edge Delamination Growth For Composite Structures

Price

Free (open access)

Paper DOI

10.2495/CP980211

Volume

21

Pages

12

Published

1998

Size

885 kb

Author(s)

F.A. Netto & S.F. Estefen

Abstract

Layer debonding (delamination) is one of the most frequent cracking mode in laminated composite materials. This paper applies the concept of strain energy release rate (G) for the analysis of edge delamination growth in laminates [0™, 90n]s (m, n^ 2, 4, 6) under tension loads. Analytical and numerical (finite element method) models were employed in order to study the effects of laminate stacking sequence on G evaluation. Finally, correlation studies between numerical and analytical approaches give support to the accomplishment of stress analyses near to the free edge. Nomenclature EXX- lamina axial stiffness EZZ - lamina

Keywords