Wave propagation in stiffened structures using spectrally formulated finite element

Ajith, V and Gopalakrishnan, S (2013) Wave propagation in stiffened structures using spectrally formulated finite element. In: European Journal of Mechanics - A/Solids, 41 . pp. 1-15.

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Abstract

In this work, the wave propagation analysis of built-up composite structures is performed using frequency domain spectral finite elements, to study the high frequency wave responses. The paper discusses basically two methods for modeling stiffened structures. In the first method, the concept of assembly of 2D spectral plate elements is used to model a built-up structure. In the second approach, spectral finite element method (SFEM) model is developed to model skin-stiffener structures, where the skin is considered as plate element and the stiffener as beam element. The SFEM model developed using the plate-beam coupling approach is then used to model wave propagation in a multiple stiffened structure and also extended to model the stiffened structures with different cross sections such as T-section, I-section and hat section. A number of parametric studies are performed to capture the mode coupling, that is, the flexural-axial coupling present in the wave responses.

Item Type:	Journal Article
Publication:	European Journal of Mechanics - A/Solids
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	19 Jul 2013 07:12
Last Modified:	19 Jul 2013 07:12
URI:	http://eprints.iisc.ac.in/id/eprint/46843

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