| Titre : |
Stability of Ships and Other Bodies |
| Type de document : |
texte imprimé |
| Auteurs : |
GENICK Bar-Meir, Ph. D., Auteur |
| Editeur : |
Editions des itinéraires scientifiques |
| Année de publication : |
2024 |
| Importance : |
191 p. |
| Présentation : |
couv. illus. en coul. |
| Format : |
23 cm. |
| ISBN/ISSN/EAN : |
978-9931-27-161-1 |
| Langues : |
Français (fre) |
| Catégories : |
07 Physique
|
| Mots-clés : |
Dimensional Analysis Experiments for Stability Direct Examination Mass Centroid. |
| Index. décimale : |
07-00-Généralité |
| Résumé : |
This book deals with stability of floating bodies. The approach taken in this book is that of looking at the physical point of view on the stability. This means that instead looking at regulations, the book examines why the things behave in a certain way. For example, the book does not start with the archaic GGGMMM (metacenter approach) but deals with the direct approach (today standard approach angle out). While this difference looks symbolic at first, the results are profoundly different. For exemple, in the common approach it was assumed (actually it is deeply relic) that a change in the cross section loquid line is irrelevant. As results, an upside triangle and downside triangle have the same stability. Here in this book, it was found that during the floating body tilting, the ritation point changes according to the tilting angle. The rotation location is indirectly believed to be in the metacenter approachin MMM and MMM is assumed to be at a fixed point for small angle. These two assumptions are wrong, the rotation point is not around metacenter and the metacenter is not fixed (only under certain circumstances).
This method, used in this book demonstrates that the turning point of the floating body is at point AAA on the liquid line and it can move around. Are these discoveries important? The answer is yes for most aspects and less important for others. With the prediction of the floating bodies stability, both methods yield the same results. Yet, the strength of the stability, even with the dimensional analysis improvement, that is demonstrated in this book, has major issues. The most profound effect is the resonance of container ship (and others). Ship are not regular pendulum but are double pendulum that is they do not have regular frequency and amplitude but chaotic behavior for medium and large wave. While this book is in the forefront of knowledge in this area, there significant information needed to learn. |
| Note de contenu : |
Abstract
Prologue
Preface
1. Introduction to Stability
2. Marine Badies Definitions
3. Mathematics For Stability
4. Mass Centroid
5. Moment of Inertia
6. Pressure
7. Buoyancy
8. Direct Examination
9. Metacenter
10. Variable Density Floating Bodies
11. Rolling
12. Dimensional Analysis
13. Experiments for Stability
Bibliography
Index |
Stability of Ships and Other Bodies [texte imprimé] / GENICK Bar-Meir, Ph. D., Auteur . - Editions des itinéraires scientifiques, 2024 . - 191 p. : couv. illus. en coul. ; 23 cm. ISBN : 978-9931-27-161-1 Langues : Français ( fre)
| Catégories : |
07 Physique
|
| Mots-clés : |
Dimensional Analysis Experiments for Stability Direct Examination Mass Centroid. |
| Index. décimale : |
07-00-Généralité |
| Résumé : |
This book deals with stability of floating bodies. The approach taken in this book is that of looking at the physical point of view on the stability. This means that instead looking at regulations, the book examines why the things behave in a certain way. For example, the book does not start with the archaic GGGMMM (metacenter approach) but deals with the direct approach (today standard approach angle out). While this difference looks symbolic at first, the results are profoundly different. For exemple, in the common approach it was assumed (actually it is deeply relic) that a change in the cross section loquid line is irrelevant. As results, an upside triangle and downside triangle have the same stability. Here in this book, it was found that during the floating body tilting, the ritation point changes according to the tilting angle. The rotation location is indirectly believed to be in the metacenter approachin MMM and MMM is assumed to be at a fixed point for small angle. These two assumptions are wrong, the rotation point is not around metacenter and the metacenter is not fixed (only under certain circumstances).
This method, used in this book demonstrates that the turning point of the floating body is at point AAA on the liquid line and it can move around. Are these discoveries important? The answer is yes for most aspects and less important for others. With the prediction of the floating bodies stability, both methods yield the same results. Yet, the strength of the stability, even with the dimensional analysis improvement, that is demonstrated in this book, has major issues. The most profound effect is the resonance of container ship (and others). Ship are not regular pendulum but are double pendulum that is they do not have regular frequency and amplitude but chaotic behavior for medium and large wave. While this book is in the forefront of knowledge in this area, there significant information needed to learn. |
| Note de contenu : |
Abstract
Prologue
Preface
1. Introduction to Stability
2. Marine Badies Definitions
3. Mathematics For Stability
4. Mass Centroid
5. Moment of Inertia
6. Pressure
7. Buoyancy
8. Direct Examination
9. Metacenter
10. Variable Density Floating Bodies
11. Rolling
12. Dimensional Analysis
13. Experiments for Stability
Bibliography
Index |
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