A Shock Factor Based Approach for the Damage Assessment of Plane Plates Subjected to Underwater Explosion

Abstract

The energy of an underwater shock wave primarily depends on the charge quantity and the stand-off. The shock factor, which is an indicator of the shock energy, is important in that the kick of velocity developed by a plate is dependent upon it. This investigation introduces the term ‘effective shock factor’, which is the shock factor to the power of 1.03 multiplied by the square root of the coupling factor, to establish the relationship between it and the elastic and yield response of plane plates of circular and rectangular geometries. Experiments were carried out on a high-strength steel plate of 300 mm × 250 mm × 8 mm for comparison. Published results on circular and rectangular plates are compared with the prediction.