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Benchmark Finite Element Simulations of Postbuckling Composite Stiffened Panels

Orifici, Adrian and Thomson, R. and Gunnion, A.J. and Degenhardt, Richard and Abramovich, H. and Bayandor, J. (2005) Benchmark Finite Element Simulations of Postbuckling Composite Stiffened Panels. 11th Australian International Aerospace Congress, 2005-03-13 - 2005-03-17, Melbourne, Australien.

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Abstract

This paper outlines the CRC-ACS contribution to a software code benchmarking exercise as part of the European Commission Project COCOMAT investigating composite postbuckling stiffened panels. Analysis was carried out using MSC.Nastran (Nastran) solution sequences SOL 106 and SOL 600, Abaqus/Standard (Abaqus) and LS-Dyna, and compared to experimental data generated previously at the Technion, Israel and DLR, Germany. The finite element (FE) analyses generally gave very good comparison up to initial postbuckling, with excellent predictions of stiffness, and mostly accurate representations of the initial postbuckling mode shape, leading to fair omparison in deep postbuckling. Accurate modelling of boundary conditions and panel imperfections were crucial to achieve accurate results, with boundary conditions in particular presenting the most critical problem. Comparatively, SOL 106, SOL 600 and Abaqus gave almost identical results, whilst LS-Dyna produced less accurate results in postbuckling. The work in this paper will be compared to parallel FE analyses from other project partners, and conclusions will be made on the efficacy of various software codes for fuselage-representative composite structures.

Document Type:Conference or Workshop Item (Paper)
Title:Benchmark Finite Element Simulations of Postbuckling Composite Stiffened Panels
Authors:
AuthorsInstitution or Email of Authors
Orifici, AdrianSchool of Aerospace, Mechanical & Manufacturing Engineering, Royal Melbourne Institute of Technology,
Thomson, R.Cooperative Research Centre for Advanced Composite Structures Ltd
Gunnion, A.J.Sir Lawrence Wackett Centre for Aerospace Design Technology, Royal Melbourne
Degenhardt, RichardUNSPECIFIED
Abramovich, H.Faculty of Aerospace Engineering, Technion - Israel Institute of Technology
Bayandor, J.Sir Lawrence Wackett Centre for Aerospace Design Technology, Royal Melbourne
Date:March 2005
Keywords:Composite, postbuckling, stiffened panels, finite element, COCOMAT
Event Title:11th Australian International Aerospace Congress
Event Location:Melbourne, Australien
Event Type:international Conference
Event Dates:2005-03-13 - 2005-03-17
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Doris Ries
Deposited On:07 Aug 2007
Last Modified:12 Dec 2013 20:26

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