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Comparison of Beam and Shell Theory for Mass Estimation in Preliminary Wing Design

Dorbath, Felix and Nagel, Björn and Gollnick, Volker (2010) Comparison of Beam and Shell Theory for Mass Estimation in Preliminary Wing Design. 2nd Aircraft Structural Design Conference, 26-28 October 2010, London, UK.

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Abstract

This paper presents a comparison between the beam and shell theory for the application on wing box mass estimation in preliminary aircraft wing design. At first, the difference between the two theories in bending, in twist around the beam axis and in twist in flight direction is analyzed for a range of different wing geometries and load cases. In addition the differences in local and integral values of the x-normal, y-normal, xy-shear and von Mises stress are analyzed. Afterwards, certain geometries are selected and a realistic aerodynamic load is applied. For those wings a sizing of the skin and spar thickness is performed using both, the beam and shell theory. The sizing is performed with constant aerodynamic loads as well as with aeroelastic loads. Finally, explanatory statements for the differences in mass estimation and for different aeroelastic behaviour between both theories are discussed.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Comparison of Beam and Shell Theory for Mass Estimation in Preliminary Wing Design
Authors:
AuthorsInstitution or Email of Authors
Dorbath, Felixfelix.dorbath@dlr.de
Nagel, Björnbjoern.nagel@dlr.de
Gollnick, Volkervolker.gollnick@dlr.de
Date:26 October 2010
Status:Published
Keywords:beam theory, shell theory, preliminary wing design, comparison, mass estimation, bernoulli, stress, strain, deflection, sizing
Event Title:2nd Aircraft Structural Design Conference
Event Location:London, UK
Event Type:international Conference
Event Dates:26-28 October 2010
Organizer:Royal Aeronautical Society
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: Hamburg
Institutes and Institutions:Lufttransportsysteme > Integrierter Luftfahrzeugentwurf
Deposited By: Felix Dorbath
Deposited On:14 Mar 2011 08:58
Last Modified:27 Mar 2013 14:47

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