eCite Digital Repository

The whipping response of a submerged platform subjected to near-field, non-contact underwater explosions


De Candia, S and Ojeda, R and Reid, W and Ratcliffe, M, The whipping response of a submerged platform subjected to near-field, non-contact underwater explosions, Research Report, Department of Defence, Science and Technology, Australia (2018) [Government or Industry Research]

Pending copyright assessment - Request a copy

Official URL:


An experimental investigation of an underwater explosion (UNDEX) induced whipping response was conducted on a submerged platform. The platform was subjected to eight near-field, non-contact UNDEX events, using two explosive charge sizes at three longitudinal positions along the hull length, coinciding with predetermined peak and node positions of the natural bending mode responses of the platform. We found that stand-off positions at amidships, coinciding with the peak response of the first bending mode, produced the most severe whipping response. Stand-off positions located at the node of the first bending mode had a greatly reduced whipping response for the same charge size and transverse stand-off distance. Stand-off positions away from amidships demonstrated multiple bending mode responses, which for the larger charge size resulted in the peak response occurring away from the initial stand-off position. These results have an implication on how navy platform assessments are undertaken, and suggests that whipping responses require more detailed consideration to understand a platform's limitations against an UNDEX event.

Item Details

Item Type:Government or Industry Research
Keywords:Underwater explosions, Structural response, Experimental analysis, Bubbles, Shock
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Defence
Objective Group:Defence
Objective Field:Maritime
UTAS Author:De Candia, S (Mr Steven De Candia)
UTAS Author:Ojeda, R (Dr Roberto Ojeda Rabanal)
ID Code:128601
Year Published:2018
Funding Support:Australian Research Council (IC140100003)
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2018-10-01
Last Modified:2018-10-09

Repository Staff Only: item control page