REVIEW ARTICLES: Failure of Composite Materials

Prediction of Energy Release Rate for Mixed-Mode Delamination Using Classical Plate Theory

[+] Author and Article Information
R. A. Schapery

Civil Engineering Department, Texas A&M University, College Station, TX 77843

B. D. Davidson

Mechanical Systems Egineering and Research Division, Jet Propulsion Laboratory, Pasadena, CA 91109

Appl. Mech. Rev 43(5S), S281-S287 (May 01, 1990) doi:10.1115/1.3120829 History: Online April 30, 2009


Prediction of the energy release rate (ERR) and its components for mixed-mode delamination of composite laminates is discussed. A classical plate theory (CPT) version of Irwin’s virtual crack closure method is developed and used for the ERR, first for plane strain and then for three-dimensional deformations. It is shown that CPT does not provide quite enough information to obtain a decomposition of ERR into its opening and shearing mode components. Results from a continuum analysis are needed to complete the decomposition; but analysis of only one loading case is required for two-dimensional and certain three-dimensional problems. In two example problems the finite element method is used with CPT to complete the mode decomposition. Results from CPT and the finite element method are then compared for several cases.

Copyright © 1990 by American Society of Mechanical Engineers
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