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Support of Impact Testing with Instrumented Target Support by Finite Element Analysis

Ritt, Stefan Andreas und Johnson, Alastair Frank (2008) Support of Impact Testing with Instrumented Target Support by Finite Element Analysis. In: International Conference on Impact Loading of Lightweight Structures. IMPLAST 2008, 2008-06-17 - 2008-06-19, Trondheim, Norway.

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Offizielle URL: http://www.bygg.ntnu.no/ktek/konferanser/SIMLAB2008/

Kurzfassung

High Velocity Impact (HVI) testing is an important issue for aircraft certification. Particularly, bird strike is an impact incident with one of the highest kinetic energy an aircraft can experience. To reduce the cost of extensive gas gun testing for new aircraft structures there is growing interest in finite element (FE) simulations of impact damage. However, HVI simulations are not yet fully accepted by aviation authorities as a means of compliance. In order to validate the computational procedures reliable quantitative data are required from gas gun tests for detailed comparison with FE predictions. In order to prepare and validate expensive and complex experiments, numeric simulations are intended. Hence, FE models of a test setup are defined then used for impact analysis. Emphasis is set on studying the test setup, the structure as well as the model parameters. The test setup is an instrumented target support (ITS) which is designed to measure impact pulses by an internal strain bar. In contrast to surface strain gauge measurements applied on sensitive areas of a structure, the strain gauges are applied to the support bars which guide the impact strain pulses assuming uniaxial wave propagation. Thus, structural deformation is not monitored locally but quantitative measurements of dynamic load pulses acting on structures during gas gun tests are intended. Here, test results of bird pulse measurement with the ITS are evaluated and used to correlate with simulations. The test setup is created as a parametric geometry and impact analysis is performed with LS-DYNA.

Dokumentart:Konferenzbeitrag (Paper)
Titel:Support of Impact Testing with Instrumented Target Support by Finite Element Analysis
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Ritt, Stefan AndreasNICHT SPEZIFIZIERT
Johnson, Alastair FrankNICHT SPEZIFIZIERT
Datum:Juni 2008
Erschienen in:International Conference on Impact Loading of Lightweight Structures
Referierte Publikation:Ja
In ISI Web of Science:Nein
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Langseth, MagnusNICHT SPEZIFIZIERT
Clausen, Arild H.NICHT SPEZIFIZIERT
Stichwörter:impact testing, high-velocity impact, HVI, wave propagation, finite element analysis, FEA
Veranstaltungstitel:IMPLAST 2008
Veranstaltungsort:Trondheim, Norway
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2008-06-17 - 2008-06-19
Veranstalter :Structural Impact Laboratory (SIMLab), Faculty for Engineering Science and Technology, NTNU Trondheim, Norway
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturen & Werkstoffe
Standort: Stuttgart
Institute & Einrichtungen:Institut für Bauweisen- und Konstruktionsforschung > Strukturelle Integrität
Hinterlegt von: Stefan Andreas Ritt
Hinterlegt am:14 Jan 2009
Letzte Änderung:15 Jan 2010 00:39

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