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Fracture analysis of stiffened panels under combined tensile, bending, and shear loads

Palani, Gadyam S and Iyer, Nagesh R and Dattaguru, B (2005) Fracture analysis of stiffened panels under combined tensile, bending, and shear loads. In: AIAA Journal, 43 (9). pp. 2039-2051.

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Official URL: http://www.aiaa.org/content.cfm?pageid=318

Abstract

The objective is to present the formulation of numerically integrated modified virtual crack closure integral technique for concentrically and eccentrically stiffened panels for computation of strain-energy release rate and stress intensity factor based on linear elastic fracture mechanics principles. Fracture analysis of cracked stiffened panels under combined tensile, bending, and shear loads has been conducted by employing the stiffened plate/shell finite element model, MQL9S2. This model can be used to analyze plates with arbitrarily located concentric/eccentric stiffeners, without increasing the total number of degrees of freedom, of the plate element. Parametric studies on fracture analysis of stiffened plates under combined tensile and moment loads have been conducted. Based on the results of parametric,studies, polynomial curve fitting has been carried out to get best-fit equations corresponding to each of the stiffener positions. These equations can be used for computation of stress intensity factor for cracked stiffened plates subjected to tensile and moment loads for a given plate size, stiffener configuration, and stiffener position without conducting finite element analysis.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Department/Centre: Others
Date Deposited: 04 Jun 2010 07:31
Last Modified: 19 Sep 2010 06:05
URI: http://eprints.iisc.ernet.in/id/eprint/27602

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