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

report
posted on 2023-05-25, 19:09 authored by De Candia, S, Roberto Ojeda RabanalRoberto Ojeda Rabanal, Reid, W, Ratcliffe, M
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.

Funding

Australian Research Council

ASC Pty Ltd

Austal Limited

Babcock International Group

PMB Defence Engineering Pty Ltd

Serco Australia Pty Ltd

Thales Australian Ltd

History

Publication title

Research Report

Commissioning body

Department of Defence, Science and Technology

Pagination

61

Department/School

Australian Maritime College

Publisher

Department of Defence, Science and Technology

Place of publication

Australia

Repository Status

  • Restricted

Socio-economic Objectives

Maritime

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    University Of Tasmania

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