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Experimentelle und numerische Untersuchungen zu Hochgeschwindigkeitsaufprall mit dynamischer Kraftmessung

Hörhager, Philip Daniel (2005) Experimentelle und numerische Untersuchungen zu Hochgeschwindigkeitsaufprall mit dynamischer Kraftmessung. Diploma. DLR-Interner Bericht. DLR-IB 435-2005/55, 111 S. (Unpublished)

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Abstract

In this thesis impact experiments are conducted, to characterize a first high-speed gas gun projectile launcher. Tests with carbon composite sandwich shell material demonstrators, for aircraft fuselages are performed with typical projectiles (steel and ice) at impact velocities of up to 250m/s. The specimens are subjected to non-destructive testing following the impact events. First impact tests are conducted with a new gas gun system with three barrels, having calibers of 25, 60 and 200mm, respectively. A novel device, the instrumented impact test rig, which records dynamic forces during an impact, is mounted on the largest caliber barrel. A finite element model of this device is generated and numerical simulations are conducted using steel and rubber projectiles. These projectiles have masses of up to 1.5kg and impact velocities reach 250km/h. The simulations with the numerical model focus on the core element of dynamic force measurements, the Hopkinson bar. The measurement techniques used are based on the propagation of elastic longitudinal tension waves within the rod.

Document Type:Monograph (DLR-Interner Bericht, Diploma)
Title:Experimentelle und numerische Untersuchungen zu Hochgeschwindigkeitsaufprall mit dynamischer Kraftmessung
Authors:
AuthorsInstitution or Email of Authors
Hörhager, Philip DanielUNSPECIFIED
Date:23 December 2005
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:111
Status:Unpublished
Keywords:high-velocity impact (HVI), gas gun, instrumented target support (IFS), split Hopkinson pressure bar (SHPB), elastic wave propagation, finite element method, non-destructive testing (ND)
Institution:Universität Stuttgart
Department:Luft- und Raumfahrttechnik
HGF - Research field:Aeronautics, Space and Transport (old)
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: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Stefan Andreas Ritt
Deposited On:28 Dec 2006
Last Modified:14 Jan 2010 23:54

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