Analysis of the Materials Behaviour at High Strain-Rate in Support of Impact Resistant Structural Design
Ezio Cadoni1, Matteo Dotta1, Daniele Forni1
1 DynaMat Laboratory, University of Applied Sciences of Southern Switzerland
Campus SUPSI – Trevano, 6952 Canobbio, Switzerland
ezio.cadoni@supsi.ch
matteo.dotta@supsi.ch
daniele.forni@supsi.ch
Abstract. Nowadays one of the most important challenge for structural engineering is the mitigation of the disastrous consequences, in terms of loss of life and economic impact, caused by extreme loading coming from accidents (explosion, fire), natural disasters (earthquakes, hurricanes, floods) and terroristic attacks (impact and blast). This new scenario imposes to the research community the need to enhance the knowledge of the effects of dynamic loads on structures, analysing as first priority the materials behaviour under such extreme conditions. In this direction, the utilisation of laboratory experimentation with innovative techniques can provide a strong base for the validation of existing computational models, or the implementation of new ones, towards the prediction of the structural responses under these extreme loading conditions. At a second step, it will be possible to develop better strategies for the mitigation of their effects (new technologies and materials). In this paper are described several advanced experimental techniques aimed to understand the dynamic behavior of the materials (metals, UHPC) in different failure modes (tension, compression, shear) at high strain-rate and in combination with high temperature.
Keywords: High strain-rate, Hopkinson bar, Impact, Material characterization, UHPC, Steel.
