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Static and Dynamic Simulations of the Pazy Wing Aeroelastic Benchmark by Nonlinear Potential Aerodynamics and detailed FE Model

Ritter, Markus Raimund and Hilger, Jonathan and Zimmer, Markus (2021) Static and Dynamic Simulations of the Pazy Wing Aeroelastic Benchmark by Nonlinear Potential Aerodynamics and detailed FE Model. In: AIAA Scitech 2021 Forum. AIAA SciTech 2021 Forum, 11.-21. Jan. 2021, Virtuelle Konferenz. ISBN 978-162410609-5.

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Abstract

The Pazy wing test case is a new benchmark for the investigation of aeroelastic effects at very large deflections. Tip deformations in the order of 50% span were measured in wind tunnel tests which renders this model highly attractive for the validation of numerical aeroelastic methods and tools for geometrically nonlinear, large deflection analyses. In this paper we present static coupling simulations and stability analyses for the Pazy wing for a series of onflow velocities and angles of attack. The numerical approach involves a three-dimensional, geometrically nonlinear potential aerodynamic method coupled to a commercial finite element code in a nonlinear (Lagrangian) solution sequence. This approach allows the use of the full FE structural model of the wing which comprises the (aluminum) spar and a 3D printed rib structure. For the stability analyses, the unsteady vortex lattice model is linearized analytically and combined with the structural model (both in discrete time), and the eigenvalues of the dynamics matrix are calculated (p-method). Results of the nonlinear static coupling simulations are presented for onflow velocities of 30, 40, and 50 m/s. The aeroelastic stability of the wing is investigated about states of large static deflections and shows significant variation as the deflection is increased.

Item URL in elib:https://elib.dlr.de/140945/
Document Type:Conference or Workshop Item (Speech)
Title:Static and Dynamic Simulations of the Pazy Wing Aeroelastic Benchmark by Nonlinear Potential Aerodynamics and detailed FE Model
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ritter, Markus RaimundMarkus.Ritter (at) dlr.dehttps://orcid.org/0000-0003-3828-0397
Hilger, JonathanJonathan.Hilger (at) dlr.deUNSPECIFIED
Zimmer, MarkusMarkus.Zimmer (at) dlr.dehttps://orcid.org/0000-0001-6785-7402
Date:20 January 2021
Journal or Publication Title:AIAA Scitech 2021 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
ISBN:978-162410609-5
Status:Published
Keywords:computational aeroelasticity, nonlinear aeroelasticity, large deflections, flutter, vortex-lattice-method, pazy wing, aeroelastic prediction workshop
Event Title:AIAA SciTech 2021 Forum
Event Location:Virtuelle Konferenz
Event Type:international Conference
Event Dates:11.-21. Jan. 2021
Organizer:AIAA - American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Digital Technologies
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Ritter, Markus Raimund
Deposited On:19 Feb 2021 14:59
Last Modified:15 Mar 2021 08:18

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