Multidomain modeling and analysis of delaminated stiffened composite shells

B. P. Naganarayana, B. Z. Huang, S. N. Atluri

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A unified method is presented for modeling delaminated stiffened laminated composite shells, synthesizing accurate multiple postbuckling solution paths under compressive loading, and predicting delamination growth. A multidomain modeling technique is presented for modeling the delaminated stiffened shell structures. Error-free formulations are presented for a two-noded curved stiffener element and a three-noded shell element for geometrically nonlinear applications. An accurate and simple automated solution strategy based on Newton-type iterations is presented for predicting the general geometrically nonlinear and postbuckling behavior of structures. Finally, a simple method is derived for predicting the delamination growth by using the pointwise energy release rate at the delamination front as evaluated from the three-dimensional J integral.

Original languageEnglish
Pages (from-to)1894-1904
Number of pages11
JournalAIAA Journal
Volume34
Issue number9
DOIs
StatePublished - Sep 1996

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