Abstract
The main aim of this paper is to examine the variability of some dynamic
properties of concrete composite panels to in-plane eccentric compression
loads via static and dynamic impact testing. First, experimental tests
were performed in order to obtain the dynamic and static properties of
concrete composite panels. In-plane eccentric loads were statically
applied to a couple of panels in ten uniform steps. For each step, dynamic
impact testing was performed and the modal damping, peak amplitude and
natural frequencies obtained. Second, a ‘hybrid’ model, based on the
concepts of modal analysis and the Finite Element Method, was developed in
order to obtain the natural frequencies and corresponding normal modes of
the composite panels within the frequency range 0–200 Hz. For this model,
an initial warp of the panel middle surface was incorporated into the
formulation in order to represent the applied flexural moment provoked by
the eccentric in-plane loads. The accuracy of the ‘hybrid’ model was
verified by comparison with the experimental results. Third, comparison is
made between predictions (using on the ‘hybrid’ model) and experimental
results.
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