Modelling The Response Of UHPFRC Panels To
Explosive Loading
Author(s)
G. K. Schleyer, S. J. Barnett, S. G. Millard & G. Wight
Abstract
Explosive testing of full-size fibre-reinforced concrete panels was conducted at
GL Industrial Services at Spadeadam test site, Cumbria, England in 2008. The
panels were manufactured by VSL Australia and shipped to Spadeadam for
testing. This paper reports these tests and a simplified analysis of the response of
the panels. Each panel measured 3.5m by 1.3m by 100mm thick. The panels
were contained within a large concrete enclosure to minimise clearing around the
sides from the blast wave and placed between 7m and 12m from a 100 kg TNT
equivalent explosive charge. Two of the panels were fabricated with different
levels of steel fibre dosage. The remaining two panels were fabricated with steel
fibres together with supplementary steel bar reinforcement. Numerical computer
modelling was carried out using the Autodyn package to predict the behaviour of
the four panels before testing. Based on the predictive modelling, each panel
was placed a suitable distance from the explosive charge so as to cause
permanent damage but not total structural collapse. The maximum flexural
tensile strain rate evaluated on the back face of the panel was in the region of
1.0s-1. Simplified modelling of the panels was also carried out using a singledegree-
of-freedom representation together with a resistance-deflection
relationship that took account of characteristic brittle cracking and ductile
softening behaviour following ultimate capacity. An outline of the method with
results is given in the paper.
Keywords: fibre-reinforced concrete, explosive testing, SDOF modelling, ductile
softening behaviour.
Keywords
fibre-reinforced concrete, explosive testing, SDOF modelling, ductile
softening behaviour
Related Book
Other papers in this volume
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