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Large Deformation Modeling of a Beam Type Structure and a 3D Wingbox using an Enhanced Modal Approach

Ritter, Markus and Cesnik, Carlos E. S. (2016) Large Deformation Modeling of a Beam Type Structure and a 3D Wingbox using an Enhanced Modal Approach. In: 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 4.-8. Januar 2016, San Diego. DOI: 10.2514/6.2016-1708

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Abstract

A recently developed modal-based method that captures the geometric nonlinear ef- fects that arise in the regime of large deformations of wing-like structures is applied to the modeling of a highly flexible beam structure and a 3D wingbox configuration. The method features quadratic and cubic stiffness terms and calculates the nodal deformation field not only by normal modes but also by additional mode components up to fourth or- der. Thus, both a nonlinear force-displacement relationship and a geometrically nonlinear displacement field are accounted for. Static and dynamic results for the two configurations are presented together with results from a commercial finite element solver and from the UM/NAST aeroelastic solver from the University of Michigan. The numerical study high- lights the capability of the method to capture the nonlinear effects and demonstrates its power to model a 3D wingbox structure made of shell elements with anisotropic material characteristics.

Item URL in elib:https://elib.dlr.de/102741/
Document Type:Conference or Workshop Item (Speech)
Title:Large Deformation Modeling of a Beam Type Structure and a 3D Wingbox using an Enhanced Modal Approach
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ritter, Markusmarkus.ritter (at) dlr.deUNSPECIFIED
Cesnik, Carlos E. S.cesnik (at) umich.eduUNSPECIFIED
Date:8 January 2016
Journal or Publication Title:57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2016-1708
Status:Published
Keywords:Large Deformations, Composite Structures, Nonlinear Aeroelasticity, Nonlinear Structural Dynamics, Aeroelasticity
Event Title:57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Event Location:San Diego
Event Type:international Conference
Event Dates:4.-8. Januar 2016
Organizer:AIAA SciTech
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Ritter, Markus Raimund
Deposited On:12 Feb 2016 11:51
Last Modified:10 May 2016 23:44

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