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Stress analysis of laminated structures from fiber-reinforced composite materials

Rohwer, K. and Rolfes, R. (2004) Stress analysis of laminated structures from fiber-reinforced composite materials. In: Proccedings International Congress on Computational Mechanics and Simulation, 1, pp. 21-42. International Congress on Computational Mechanics and Simulation, Kanpur, 9.-12.Dez. 2004.

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Abstract

In the open literature a tremendous number of models and procedures for stress analysis of laminated structures is available. With respect to the assumptions across the laminate thickness, theories with Cz1-continuous functions are to be distinguished from layerweise approaches, where for the latter the functional degrees of freedom can be dependent or independent of the number of layers. Transverse shear and normal stresses are more accurate when obtained by locally evaluating the equilibrium conditions. Guide-lines are needed as to which model is suitable for what task. Especially for layerwise models a fair judgment is missing. To ease up this deficiency a number of models are evaluated concerning three different aspects: the accuracy as compared to 3D elasticity results, the effort necessary to reach certain accuracy, and the suitability for developing finite elements. It turns out that the FSDT with improved transverse shear stiffness is the first choice for standard application. At extremely low slenderness ratios or in cases of abrupt changes of load or geometry higher order theories may be useful. However, their field of application is limited; engineering judgment is needed to find out whether full 3D modeling is more appropriate in such cases

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2004, monograph_id=Invited Papers 3,
Title:Stress analysis of laminated structures from fiber-reinforced composite materials
Authors:
AuthorsInstitution or Email of Authors
Rohwer, K.UNSPECIFIED
Rolfes, R.UNSPECIFIED
Date:2004
Journal or Publication Title:Proccedings International Congress on Computational Mechanics and Simulation
Volume:1
Page Range:pp. 21-42
Editors:
EditorsEmail
NGR Iyengar, Ashwini Kumar, Indian Institute of Technology Kanpur, UNSPECIFIED
Series Name:ICCMS - 04
Status:Published
Keywords:fibre composites, laminates, analysis models, efficiency
Event Title:International Congress on Computational Mechanics and Simulation, Kanpur, 9.-12.Dez. 2004
Organizer:Indian Institute of Technology Kanpur & Indian Association for Computational Mechanics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Institut für Strukturmechanik
Deposited By: Sibylle Wolff
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 16:35

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