Mathematical Models of Human and Ship Responses for Minimum Time Turns, Research Study PDF Download

Author: Martin L. Shooman
Publisher:
ISBN:
Category : Pilots and pilotage
Languages : en
Pages : 28

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Author: Martin L. Shooman
Publisher:
ISBN:
Category : Pilots and pilotage
Languages : en
Pages : 12

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Author: Maritime Research Information Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 296

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Author: Paul Kaplan
Publisher:
ISBN:
Category : Ships
Languages : en
Pages : 41

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Book Description
Available mathematical models that describe ship-wave interactions are evaluated in order to develop a technique for predicting ship structural response characteristics. Major consideration is given to the bending moment and slamming responses for an arbitrary ship form in any state of sea, at any relative heading and forward speed. The slowly varying vertical and lateral bending moments due to waves are obtained using a linearized model based on strip theory, where the effect of roll motion and its influence in the lateral plane are included, with the model sufficiently general to also allow extension to computation of torsional moments due to waves. Comparison of the results of a limited series of hand computations with available experimental data indicates a good degree of agreement, as well as an overall consistency, for the analysis of wave-induced bending moments. A mathematical representation of the bending moment due to slamming is also described, and computational procedures for obtaining an output compatible with the wave-induced bending moment are outlined. Methods of analysis in terms of power spectra as well as time histories are considered, and the utility of different types of computers for presentation of information on ship structural response is described. (Author).

Author: Verne L. Roberts
Publisher:
ISBN:
Category : Bibliography
Languages : en
Pages : 11

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Author: Andreas Öchsner
Publisher: Springer
ISBN: 3319726978
Category : Science
Languages : en
Pages : 645

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This book discusses the expertise, skills, and techniques needed for the development of new materials and technologies. It focuses on finite element and finite volume methods that are used for engineering simulations, and present many state-of-the-art applications and advances to highlight these methods’ importance. For example, modern joining technologies can be used to fabricate new compound or composite materials, even those formed from dissimilar component materials. These composite materials are often exposed to harsh environments, must deliver specific characteristics, and are primarily used in automotive and marine technologies, i.e., ships, amphibious vehicles, docks, offshore structures, and even robots. To achieve the desired material performance, computer-based engineering tools are widely used for simulation, data evaluation, and design processes.

Author: Johnny T. Ottesen
Publisher: SIAM
ISBN: 9780898718287
Category : Medical
Languages : en
Pages : 311

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Book Description
This book introduces mathematicians to real applications from physiology. Using mathematics to analyze physiological systems, the authors focus on models reflecting current research in cardiovascular and pulmonary physiology. In particular, they present models describing blood flow in the heart and the cardiovascular system, as well as the transport of oxygen and carbon dioxide through the respiratory system and a model for baroreceptor regulation.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 364

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Author: Joonyun Kang
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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To assess the behaviour of a ship in a seaway, this thesis presents the development of an integrated mathematical model describing a six-degree-of-freedom motion of a ship in a wave. This integrated mathematical model is developed with its fundamental base on both traditional seakeeping and manoeuvring theories and thus obtaining of hydrodynamic data sets as well as formulation of force component are needed in a theoretical manner. To obtain the hydrodynamic data sets, theoretical formulations and numerical implementations are carried out for a ship travelling in a wave. The theoretical formulation of three-dimensional potential flow leads boundary integral equations over mean wetted body surface with three-dimensional translating pulsating Green function. For numerical implementation Constant Panel Method and Higher-Order Panel Method are introduced as distribution technique of source singularities over the idealised body surface and compared for the estimation of hydrodynamic data set of Wigley and Todd Series 60. Mean second-order wave forces are formulated based on the solution of first-order problem and obtained by direct pressure integration over mean wetted body surface. The effects of forward speed and wave heading on the drift force and added resistance are investigated and compare with experimental data. An integrated mathematical model for manoeuvring motion is further developed with functional form of memory effect represented by convolution integrals of impulse response function to describe arbitrary ship motion in a seaway. For validation of developed numerical tool, benchmark tests have been performed for the prediction of large amplitude ship motion in following seas. Standard manoeuvring tests, turning circle and zig-zag manoeuvres, are presented to demonstrate the wave effects on the manoeuvring performance. The capability of numerical tool has been extended to the prediction of highly non-linear behaviours of parametric rolling phenomenon in longitudinal wave with reasonable accuracy.

Author: Sponsored by The Health Effects Institute
Publisher: National Academies Press
ISBN: 0309037263
Category : Science
Languages : en
Pages : 703

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Book Description
"The combination of scientific and institutional integrity represented by this book is unusual. It should be a model for future endeavors to help quantify environmental risk as a basis for good decisionmaking." â€"William D. Ruckelshaus, from the foreword. This volume, prepared under the auspices of the Health Effects Institute, an independent research organization created and funded jointly by the Environmental Protection Agency and the automobile industry, brings together experts on atmospheric exposure and on the biological effects of toxic substances to examine what is knownâ€"and not knownâ€"about the human health risks of automotive emissions.