Delamination growth during pre- and post-buckling phases of delaminated composite laminates

✍ Scribed by Izhak Sheinman; George A. Kardomateas; Assimina A. Pelegri

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 639 KB
• Volume: 35
• Category: Article
• ISSN: 0020-7683
• DOI: 10.1016/s0020-7683(97)00058-9

✦ Synopsis

The delamination growth during the pre-or post-buckling phases in composites with a single delamination (one-dimensional model) is investigated. For that purpose, a general nonlinear analysis, using variational principle, with a new set of relations for the decomposition of the total energy release rate, is used for an arbitrary one-dimensional composite laminate structure. A computer code is developed and used for the parametric study of delamination growth during buckling. The effects of a wide range of parameters, like imperfection, layup, location of delamination, theory type and length-to-thickness ratio, were intensively studied. It is found that a dominant parameter, in terms of the level of energy release rate, is the length-to-thickness ratio.