Shipboard Shock and Navy Devices for Its Simulation

Shipboard Shock and Navy Devices for Its Simulation PDF Author:
Publisher:
ISBN:
Category : Detonation waves
Languages : en
Pages : 142

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Book Description
One of the most damaging aspects of the combat environment to which Navy ships are exposed is the mechanical shock resulting from the explosion of warheads. The detonation of a large weapon at a considerable distance from the ship produces a shipboard shock environment throughout the entire ship which is potentially damaging to all shipboard equipment and systems. Information has been accumulated on the characteristics and operation of the devices specified by MIL-S-901 for the shock testing of shipboard equipment--the Navy HI Class Shock Machines and the Floating Shock Platform. Other shock machines are also used by the Navy and other services but are not considered here. This material has been gathered from many sources, most of which are not readily accessible, and is intended to provide background information. Equipments are accepted for shipboard use if they comply satisfactorily with the shock test and design procedures prescribed by MIL-S-901.

Shipboard Shock and Navy Devices for Its Simulation

Shipboard Shock and Navy Devices for Its Simulation PDF Author:
Publisher:
ISBN:
Category : Detonation waves
Languages : en
Pages : 142

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Book Description
One of the most damaging aspects of the combat environment to which Navy ships are exposed is the mechanical shock resulting from the explosion of warheads. The detonation of a large weapon at a considerable distance from the ship produces a shipboard shock environment throughout the entire ship which is potentially damaging to all shipboard equipment and systems. Information has been accumulated on the characteristics and operation of the devices specified by MIL-S-901 for the shock testing of shipboard equipment--the Navy HI Class Shock Machines and the Floating Shock Platform. Other shock machines are also used by the Navy and other services but are not considered here. This material has been gathered from many sources, most of which are not readily accessible, and is intended to provide background information. Equipments are accepted for shipboard use if they comply satisfactorily with the shock test and design procedures prescribed by MIL-S-901.

Dynamic Failure of Composite and Sandwich Structures

Dynamic Failure of Composite and Sandwich Structures PDF Author: Serge Abrate
Publisher: Springer Science & Business Media
ISBN: 9400753292
Category : Science
Languages : en
Pages : 646

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Book Description
This book presents a broad view of the current state of the art regarding the dynamic response of composite and sandwich structures subjected to impacts and explosions. Each chapter combines a thorough assessment of the literature with original contributions made by the authors. The first section deals with fluid-structure interactions in marine structures. The first chapter focuses on hull slamming and particularly cases in which the deformation of the structure affects the motion of the fluid during the water entry of flexible hulls. Chapter 2 presents an extensive series of tests underwater and in the air to determine the effects of explosions on composite and sandwich structures. Full-scale structures were subjected to significant explosive charges, and such results are extremely rare in the open literature. Chapter 3 describes a simple geometrical theory of diffraction for describing the interaction of an underwater blast wave with submerged structures. The second section addresses the problem of impact on laminated composite structures with chapters devoted to ballistic impacts on pre-stressed composite structures, tests developed to simulate dynamic failure in marine structures, damage mechanisms and energy absorption in low velocity impacts, perforation, the numerical simulation of intra and inter-ply damage during impact, and hail impact on laminated composites. Sandwich structures with laminated facings are considered in Section 3 with chapters dealing with the discrete modeling of honeycomb core during the indentation of sandwich structures, the behavior of fold core sandwich structures during impact, and impact on helicopter blades. The fourth section consists of two chapters presenting experimental results and numerical simulation of composite structures subjected to crash. This volume is intended for advanced undergraduate and graduate students, researchers, and engineers interested and involved in analysis and design of composite structures.

Water Waves Generated By Underwater Explosion

Water Waves Generated By Underwater Explosion PDF Author: Bernard Le Mehaute
Publisher: World Scientific
ISBN: 981450114X
Category : Technology & Engineering
Languages : en
Pages : 389

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Book Description
This is the first book on explosion-generated water waves. It presents the theoretical foundations and experimental results of the generation and propagation of impulsively generated waves resulting from underwater explosions. Many of the theories and concepts presented herein are applicable to other types of water waves, in particular, tsunamis and waves generated by the fall of a meteorite. Linear and nonlinear theories, as well as experimental calibrations, are presented for cases of deep and shallow water explosions. Propagation of transient waves on dissipative, nonuniform bathymetries together with laboratory simulations are analyzed and discussed.

Explosion Blast Response of Composites

Explosion Blast Response of Composites PDF Author: Adrian P. Mouritz
Publisher: Woodhead Publishing
ISBN: 0081020937
Category : Technology & Engineering
Languages : en
Pages : 434

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Book Description
Explosion Blast Response of Composites contains key information on the effects of explosions, shock waves, and detonation products (e.g. fragments, shrapnel) on the deformation and damage to composites. The book considers the blast response of laminates and sandwich composites, along with blast mitigation of composites (including coating systems and energy absorbing materials). Broken down under the following key themes: Introduction to explosive blast response of composites, Air explosion blast response of composites, Underwater explosion blast response of composites, and High strain rate and dynamic properties of composites, the book deals with an important and contemporary topic due to the extensive use of composites in applications where explosive blasts are an ever-present threat, such as military aircraft, armoured vehicles, naval ships and submarines, body armour, and other defense applications. In addition, the growing use of IEDs and other types of bombs used by terrorists to attack civilian and military targets highlights the need for this book. Many terrorist attacks occur in subways, trains, buses, aircraft, buildings, and other civil infrastructure made of composite materials. Designers, engineers and terrorist experts need the essential information to protect civilians, military personnel, and assets from explosive blasts. - Focuses on key aspects, including both modeling, analysis, and experimental work - Written by leading international experts from academia, defense agencies, and other organizations - Timely book due to the extensive use of composites in areas where explosive blasts are an ever-present threat in military applications

Design of Torpedoes and Naval Mines

Design of Torpedoes and Naval Mines PDF Author: M. Jankiraman Ph.D
Publisher: Notion Press
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 511

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Book Description
This book is about modern torpedo technology and naval mine design. It is written by an expert in underwater weapon systems. The author has spent many years designing torpedoes in all their aspects from homing to dynamics and control engineering, as well as torpedo proximity fuzes. He has also designed all types of naval mines. The author initially discusses the nature of underwater explosions and the detailed designing of torpedo electromagnetic (EM) proximity fuzes based on it. The topic of EM proximity fuzes, considered a complex subject, is treated in an easy-to-understand manner. The topic is well explained with examples. Torpedo homing is then discussed in substantial detail as well as wake homing. The author discusses basic sonar theory for the uninitiated. He then discusses the evolution of torpedo homing and concludes with a cursory examination of the homing head of a contemporary torpedo.

Buildings and Structures under Extreme Loads

Buildings and Structures under Extreme Loads PDF Author: Chiara Bedon
Publisher: MDPI
ISBN: 3039435698
Category : Technology & Engineering
Languages : en
Pages : 434

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Book Description
Exceptional loads on buildings and structures may have different causes, including high-strain dynamic effects due to natural hazards, man-made attacks, and accidents, as well as extreme operational conditions (severe temperature variations, humidity, etc.). All of these aspects can be critical for specific structural typologies and/or materials that are particularly sensitive to external conditions. In this regard, dedicated and refined methods are required for their design, analysis, and maintenance under the expected lifetime. There are major challenges related to the structural typology and material properties with respect to the key features of the imposed design load. Further issues can be derived from the need for risk mitigation or retrofit of existing structures as well as from the optimal and safe design of innovative materials/systems. Finally, in some cases, no appropriate design recommendations are available and, thus, experimental investigations can have a key role within the overall process. In this Special Issue, original research studies, review papers, and experimental and/or numerical investigations are presented for the structural performance assessment of buildings and structures under various extreme conditions that are of interest for design.

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 : 170

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Book Description


Developments in the Collision and Grounding of Ships and Offshore Structures

Developments in the Collision and Grounding of Ships and Offshore Structures PDF Author: Carlos Guedes Soares
Publisher: CRC Press
ISBN: 1000767655
Category : Transportation
Languages : en
Pages : 394

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Book Description
Developments in the Collision and Grounding of Ships and Offshore includes the contributions to the 8th International Conference on Collision and Grounding of Ships and Offshore Structures (ICCGS 2019, Lisbon, Portugal, 21-23 October 2019). The series of ICCGS-conferences started in 1996 in San Francisco, USA, and are organised every three years in Europe, Asia and the Americas. Developments in the Collision and Grounding of Ships and Offshore covers a wide range of topics, from the behavior of large passenger vessels in collision and grounding, collision and grounding in arctic conditions including accidental ice impact, stability residual strength and oil outflow of ships after collision or grounding, collision and grounding statistics and predictions and measures of the probability of incidents, risk assessment of collision and grounding, prediction and measures for reduction of collision and grounding, new designs for improvement of structural resistance to collisions, analysis of ultimate strength of ship structures (bulkheads, tank tops, shell etc.), design of buffer bows to reduce collision consequences, design of foreship structures of ferries with doors to avoid water ingress in case of a collision, development of rational rules for the structural design against collision and grounding, innovative navigation systems for safer sea transportation, the role of IMO, classification societies, and other regulatory bodies in developing safer ships, collision between ships and offshore structures, collision between ships and fixed or floating bridges and submerged tunnels, collision with quays and waterfront structures, collision and grounding experiments, properties of marine-use materials under impact loadings, residual strength of damaged ships and offshore structures, analysis of ultimate strength of ship structures, to human factors in collision and grounding accidents. Developments in the Collision and Grounding of Ships and Offshore is a valuable resource for academics, engineers and professionals involved in these areas.

The Shock and Vibration Digest

The Shock and Vibration Digest PDF Author:
Publisher:
ISBN:
Category : Shock (Mechanics)
Languages : en
Pages : 212

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Book Description


Advances in Thick Section Composite and Sandwich Structures

Advances in Thick Section Composite and Sandwich Structures PDF Author: Sung W. Lee
Publisher: Springer Nature
ISBN: 3030310655
Category : Technology & Engineering
Languages : en
Pages : 673

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Book Description
This book describes recent research findings on response and integrity of thick section composite and sandwich structures. In particular, it deals with these structures for marine applications under static and dynamic loads such as shock and slamming loads in severe sea environment including sea water, temperature extremes, hydrostatic pressure and Arctic conditions. Three-dimensional constitutive equations and failure criteria for structural response and integrity are considered. The book serves as an excellent repository of major advances in research on response and integrity of composite and sandwich structures made through research grants sponsored by the U.S. Office of Naval Research in the past decade. Collects major advances in response and integrity research; Emphasizes phenomena within severe environments; Illustrates underwater fluid-structure interactions, shock/blast loads, and slamming loads.