Abstract
In order to study the counterintuitive behaviour of the clamped square plates under blast loading, numerical simulation and experimental research were carried out on the clamped square aluminium plate. The finite element software is used to simulate the dynamic response of plate under the blast loading. It is found that the counterintuitive behaviour occurred only under the condition when the overpressure is low and the positive pressure time is short. And this deformation mode occurred between elastic deformation and large plastic deformation. The explosion tests were carried out to obtain the counterintuitive behaviour of plates, and the range of the explosion load which caused the counterintuitive behaviour was clarified.
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