Entwurf und Aufbau eines zweiaxialen Split-Hopkinson-Bars

Design and construction of a biaxial Split-Hopkinson-Bar

The Split-Hopkinson-Bar setup is a widely used method to determine the dynamical properties of materials under high loading rates. From these experiments, a rise of the concrete compression strength with increasing loading rate is known. Furthermore, an increase of compression strength under multiaxial static loading conditions is known. For the purpose to study the effect of multiaxial compression and concurrently high loading rates, a biaxial Split-Hopkinson-Bar has been designed and built up. With this test facility strain rates up to 150 1/s can be reached. The design of this biaxial Split-Hopkinson-Bar requires the consideration of the material strength of the test specimens, the loading rates and the synchronisation of two gas guns.