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Transient finite element dynamic response of laminated composite stiffened shell

Published online by Cambridge University Press:  04 July 2016

M. Mukhopadhyay  and
S. Goswami
M. Mukhopadhyay
Affiliation:
Department of Ocean Engineering and Naval ArchitectureIndian Institute of TechnologyKharagpur, India
S. Goswami
Affiliation:
Department of Ocean Engineering and Naval ArchitectureIndian Institute of TechnologyKharagpur, India
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Abstract

The paper uses the conventional nine-noded Lagrangian element for studying transient linear response analysis of composite stiffened shells. An improved version of the stiffener modelling has been used in which the stiffener can be placed anywhere inside the element. For the first time, concentric or eccentric stiffeners have been used for composite stiffened shells for solving the transient dynamic response of these structures. These are not available in existing commercial packages. Different types of time dependent loading such as short duration air-blast loading, suddenly applied uniformly distributed step loading and sinusoidally harmonic loading have been considered in this paper. The results of stiffened composite cylindrical shells and doubly curved shells with different boundary conditions and various laminate orientations have been presented for eccentric stiffeners. Parametric studies considering different variables have also been carried out.

Type
Research Article
Information
The Aeronautical Journal , Volume 100 , Issue 996 , July 1996 , pp. 223 - 234
Copyright
Copyright © Royal Aeronautical Society 1996 

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