Author(s): John B. Kennedy; K. J. Iyengar
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Keywords: No Keywords
Abstract: The deformation response of homogeneous, isotropic and infinite floating ice sheets under high-intensity, short-duration loads is examined. The energy imparted by such loads is considered to be significantly greater than the maximum elastic strain energy of the ice-water system. Using a rigid-plastic theory, statically and kinematically admissible moment and displacement fields satisfying the Tresca yield criterion and the associated flow rules are postulated. Closed-form expressions are derived for the total time of response and the final deformed configuration of floating ice sheets. The influence of the magnitude of impact load and the load-contact radius on the various design quantities such as deflection profile and stress distribution is discussed. Based on the results derived, a design method is presented to arrive at a safe thickness of a floating ice sheet to sustain a given impact load.
Year: 1981