Underwater explosion induced shock loading of structures: Influence of water depth, salinity and temperature

2016 ◽  
Vol 126 ◽  
pp. 22-28 ◽  
Author(s):  
Ritwik Ghoshal ◽  
Nilanjan Mitra
Author(s):  
Chen Pan ◽  
Wei Qiang ◽  
Liu Zhizhong ◽  
Wang Guan

Abstract The response of ship equipment under non-contact underwater explosion shock loading was one of the main loadings of equipment. In order to cut down mechanical noise caused by mechanical equipment, vibration isolation measures, such as floating raft, vibration isolation, were widely used on noise mechanical equipments in acoustical stealth of ship, vibration isolation can reduce the vibration transfer to install base effectively, while the anti-shock resistance of vibration isolation and the equipment was important synchronously, as for the response of the equipment on vibration isolation, especially the actual response of the vibration isolation with piping system under shock loading. In this paper, the research on the response of vibration isolation, equipment, flexible piping and piping under underwater explosion shock loading were considered together, and the response of vibration isolation under shock load was analyzed with different piping arrangement. Found that the piping system has a significant impact on the response of the equipment under horizontal impact, but almost all equipments were assessed in experiment without considering the piping system. With the precondition of the effect of vibration isolation, a more rigid flexible pipe can be taken was benefit to the anti-shock resistance of vibration isolation.


2011 ◽  
Vol 88-89 ◽  
pp. 662-667 ◽  
Author(s):  
Ting Tang ◽  
Li Jun Wang ◽  
Jin Bo Ma

The purpose of this work is to study the effect of liquid in double bottom structures subjected to a closely underwater explosion shock loading. The comparative analyses are made by use of a commercial, explicit finite element program. Based on the difference of depth of liquid in double bottom structures and distance between explosive and outer bottom, six cases were simulated in this paper. The results show that liquid in cabins can enhance the resistance of double bottom structures to an underwater explosion.


1994 ◽  
Vol 39 (7) ◽  
pp. 1689-1703 ◽  
Author(s):  
Stéphane Maritorena ◽  
André Morel ◽  
Bernard Gentili

2016 ◽  
Vol 25 (1) ◽  
pp. 135-146 ◽  
Author(s):  
Mara Rathman ◽  
Jakša Bolotin ◽  
Nikša Glavić ◽  
Josip Barišić

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