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Enhanced Modal Approach for Free-flight Nonlinear Aeroelastic Simulation of Very Flexible Aircraft

Ritter, Markus and Cesnik, Carlos E. S. and Jones, Jessica (2016) Enhanced Modal Approach for Free-flight Nonlinear Aeroelastic Simulation of Very Flexible Aircraft. 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, California. DOI: 10.2514/6.2016-1794

Full text not available from this repository.

Abstract

A recently proposed modal-based method that captures the geometric nonlinear effects in the regime of large deformations is applied to the modeling of University of Michigan’s X-HALE UAV. The method is an extension of the classical modal approach towards large geometric deflections and uses higher-order stiffness terms and mode components to ac- count for nonlinear force-displacement relationships and geometrically nonlinear displace- ment fields. In this paper, the method is further extended to enable rigid body motions of an aircraft in free flight. The verification of this extension is done using the X-HALE model which is considered as a challenging test case due to pronounced nonlinearities in steady and unsteady flight conditions. A structural and an aerodynamic model of the X-HALE UAV were built and aeroelastic simulations of the model were done and validated with UM/NAST results.

Item URL in elib:https://elib.dlr.de/102743/
Document Type:Conference or Workshop Item (Speech)
Title:Enhanced Modal Approach for Free-flight Nonlinear Aeroelastic Simulation of Very Flexible Aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ritter, Markusmarkus.ritter (at) dlr.deUNSPECIFIED
Cesnik, Carlos E. S.cesnik (at) umich.eduUNSPECIFIED
Jones, Jessicajrenejo (at) umich.eduUNSPECIFIED
Date: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 :10.2514/6.2016-1794
Status:Published
Keywords:Free flying Aircraft, Large Deformation, Nonlinear Aeroelasticity, Nonlinear Flight Dynamics, Nonlinear Structural Dynamics, Structural Dynamics
Event Title:57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Event Location:San Diego, California
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 11:53
Last Modified:10 May 2016 23:44

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