Experimental study of dynamic buckling of plates under fluid-solid slamming

This paper describes the experimental investigation of the elastic-plastic dynamic buckling properties of rectangular plates under in-plane fluid-soli d slamming. Based on the observation of elastic-plastic dynamic response ch aracteristics of the plates, a dynamic buckling criterion and a dynamic yie lding criterion are defined. The corresponding critical impulse are determi ned from the experimental results for each tested plate. The effect of diff erent boundary conditions on the elastic-plastic dynamic buckling propertie s of plates is also examined. The results indicate that dynamic buckling al ways takes place elastically for the types of rectangular plates tested und er fluid-solid slamming. The dynamic buckling modes of the plates are gover ned by the plate fundamental transverse free vibration mode. It is also fou nd that boundary conditions strongly affect the dynamic buckling properties of plates subjected to fluid-solid slamming loads. Strengthening plate bou ndary constraint is a very effective way to enhance the plates' ability to resist dynamic buckling. (C) 1999 Elsevier Science Ltd. All rights reserved .