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The application of the dual boundary element method to the analysis of cracked stiffened panels

✍ Scribed by N.K. Salgado; M.H. Aliabadi

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 890 KB
Volume: 54
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(95)00111-5

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✦ Synopsis

paper presents the application of the Dual Boundary Element Method to the analysis of cracked stiffened panels. Both continuously and discretely attached stiffeners are considered. Displacement compatibility between the sheet and the stiffeners is imposed. The variables of the problem are the usual displacements and tractions at the boundary and the additional interaction forces acting at the internal attachment region. After the solution of the system of equations, the J-integral technique is used to determine the stress intensity factors. Crack growth propagation is performed for problems involving single or multiple cracks. Several examples are presented, demonstrating the effect of both broken and unbroken stiffeners.

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