Recent Advances to the Response of Surface Ships to Underwater Explosions

Recent Advances to the Response of Surface Ships to Underwater Explosions PDF Author: Robert Smilowitz
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 12

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Recent Advances to the Response of Surface Ships to Underwater Explosions

Recent Advances to the Response of Surface Ships to Underwater Explosions PDF Author: Robert Smilowitz
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 12

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The Response of Surface Ships to Underwater Explosions

The Response of Surface Ships to Underwater Explosions PDF Author:
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 38

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This report is a summary of technical information gathered by the author during an attachment to the Underwater Explosions Research Department (UERD) of the Naval Surface Warfare Center (NSWC) Carderock Division from April 1993 to July 1994. The report covers aspects of UERD's work in the area of: ship shock trials, response of surface ships to underwater explosions, computer modelling of surface ship responses and other technical information culled from the general literature.

Prediction of Surface Ship Response to Severe Underwater Explosions Using a Virtual Underwater Shock Environment

Prediction of Surface Ship Response to Severe Underwater Explosions Using a Virtual Underwater Shock Environment PDF Author: Nathan A. Schneider
Publisher:
ISBN: 9781423501206
Category :
Languages : en
Pages : 184

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During World War II many surface combatants were severely crippled by close-proximity underwater explosions from ordnance that had actually missed their target. Since this time, in order to test the survivability of mission essential equipment in a severe shock environment, all new classes of combatants have been required to have shock trial tests conducted on the lead ship of the class. While these tests are extremely important in determining the vulnerabilities of a surface ship, they require an extensive amount of preparation, manhours, and money. Furthermore, these tests present an obvious danger to the crew onboard, the ship itself and any marine life in the vicinity. Creating a virtual shock environment by use of a computer to model the ship structure and the surrounding fluid presents a valuable design tool and an attractive alternative to these tests. This thesis examines the accuracy of shock simulation using the shock trials conducted on USS WINSTON S. CHURCHILL (DDG 81) in 2001. Specifically, all three explosions DDG 81 was subjected to are simulated and the resulting predictions compared with actual shock trial data. The effects of the fluid volume size, mesh density, mesh quality, and shot location are investigated.

The Response of Ships to Underwater Explosions

The Response of Ships to Underwater Explosions PDF Author: A. H. Keil
Publisher:
ISBN:
Category : Explosions
Languages : en
Pages : 34

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Various phases of an underwater explosion are described. Nomograms are given for characteristics parameters of the shock wave and the bubble pulsation. Possible effects of the water surface and the sea bottom are discussed. Characteristic ship-response phases are reviewed and explained. They are demonstrated by actual examples of hull response and hull damage. The shipboard shock environment to which any installation aboard a ship is subjected is presented, and typical cases of shock damage are shown. The significance of the study of ship response to underwater explosions is reviewed. Generalization of the few controlled explosion tests against ships becomes possible by application to loading and response theories. The foundation is thus laid for increasing the combat reliability of ships and their endurance under attack.

Dynamic Response of a Catamaran-Hull Ship Subjected to Underwater Explosions

Dynamic Response of a Catamaran-Hull Ship Subjected to Underwater Explosions PDF Author: Hakan Ucar
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 158

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Book Description
Surface Ship Shock trials play an essential role in ship test and evaluation (T & E), and Live Fire Test and Evaluation (LFT & E) requirements for the lead ship of each new construction shock-hardened ship class. While those trials are necessary in order to evaluate the vunerability and survivability of the ship, they are very expensive, require extensive time for planing and coordination, and pose serious danger to the crew, ship and marine environment. Thus, computer modeling of the ship structure, surrounding fluid, and virtual shock environment by utilizing finite element method offers a valuable design tool and an alternative to these tests. This thesis investigates the response of a catamaran-hull ship subjected to an underwater explosion by creating a virtual UNDEX environment based on the modeling and simulation methodology established by the Shock and Vibration Computational Laboratory at the Naval Postgraduate School (NPS). In previous works, all of the structural models were monohull ships and there have been concerns about the feasibility of creating the coupled fluid and catamaran-hull model. This thesis studies the effect of an additional hull and gap between two hulls on the dynamic response of the ship as well as the effect of the charge location.

Report - Naval Ship Research and Development Center

Report - Naval Ship Research and Development Center PDF Author: David W. Taylor Naval Ship Research and Development Center
Publisher:
ISBN:
Category : Shipbuilding
Languages : en
Pages : 256

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Response of Marine Structures to Underwater Explosions

Response of Marine Structures to Underwater Explosions PDF Author: Y. S. Shin
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages :

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A Survey of Possible Methods for Protecting Ships from Underwater Explosions

A Survey of Possible Methods for Protecting Ships from Underwater Explosions PDF Author: Otto Hill
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 92

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Advances in the Collision and Grounding of Ships and Offshore Structures

Advances in the Collision and Grounding of Ships and Offshore Structures PDF Author: Hervé Le Sourne
Publisher: CRC Press
ISBN: 1003825761
Category : Technology & Engineering
Languages : en
Pages : 517

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Book Description
This book offers state-of-the-art developments in the collision and grounding of ship and offshore structures. The topics covered by the contributions include: dynamics of vessels in collision and grounding; collision and grounding in Arctic conditions; collision and grounding statistics and measures of the probability of incidents; risk assessment of collision and grounding; measures for reduction of collision and grounding, machine learning methods for the evaluation of probabilistic collision and grounding risk; new designs for improvement of structural resistance to collisions; analysis of ultimate strength of damaged ship structures; design of buffer bows to reduce collision consequences; innovative navigation systems for safer sea transportation, collision between ships and offshore structures; collision between ships and fixed or floating bridges, collision and grounding experiments; properties of materials under impact loadings; residual strength of damaged ships and offshore structures; hull girder response of ships under severe dynamic loadings. The book is aimed at naval architects, marine engineers and scientists. The ICCGS conferences aim to present state-of-the-art methods for analysis and design against collision and grounding of ships, collisions between ships and icebergs, offshore structures, bridges, submerged tunnels and waterfront structures. Previous conferences were held in: San Francisco, USA in 1996; Copenhagen, Denmark in 2001; Tokyo, Japan in 2004; Hamburg, Germany in 2007; Helsinki, Finland in 2010; Trondheim, Norway in 2013; Ulsan, South Korea in 2016, and Lisbon, Portugal in 2019. The Proceedings in Marine Technology and Ocean Engineering series is devoted to the publication of proceedings of peer-reviewed international conferences dealing with various aspects of ‘Marine Technology and Ocean Engineering’. The Series includes the proceedings of the following conferences: the International Maritime Association of the Mediterranean (IMAM) Conferences, the Marine Structures (MARSTRUCT) Conferences, the Renewable Energies Offshore (RENEW) Conferences and the Maritime Technology (MARTECH) Conferences, and the Collision and Grounding of Ships and Offshore Structures (ICCGS) conferences. The ‘Marine Technology and Ocean Engineering’ series is also open to new conferences that cover topics on the sustainable exploration and exploitation of marine resources in various fields, such as maritime transport and ports, usage of the ocean including coastal areas, nautical activities, the exploration and exploitation of mineral resources, the protection of the marine environment and its resources, and risk analysis, safety and reliability. The aim of the series is to stimulate advanced education and training through the wide dissemination of the results of scientific research.

Underwater Explosions

Underwater Explosions PDF Author: Robert Hugh Cole
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 480

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