Nonlinear dynamic phenomena in mechanics /
<p><i>Nonlinear phenomena</i> should play a crucial role in the design and control of engineering systems and structures as they can drastically change the prevailing dynamical responses. </p><p>This book covers theoretical and applications-based problems of <i>no...
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| Formato: | livro electrónico |
| Idioma: | English |
| Publicado em: |
Dordrecht
Springer Netherlands
2012.
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| Colecção: | Solid Mechanics and Its Applications
181 |
| Assuntos: | |
| Acesso em linha: | Click here to view the full text content |
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| Resumo: | <p><i>Nonlinear phenomena</i> should play a crucial role in the design and control of engineering systems and structures as they can drastically change the prevailing dynamical responses. </p><p>This book covers theoretical and applications-based problems of <i>nonlinear dynamics</i> concerned with both discrete and continuous systems of interest in civil and mechanical engineering. They include <i>pendulum-like </i>systems, <i>slender footbridges</i>, <i>shape memory alloys</i>,<i> sagged elastic cables </i>and <i>non-smooth problems</i>.</p><p>Pendulums can be used as a dynamic absorber mounted in high buildings, bridges or chimneys. Geometrical nonlinearities introduced by pendulum motion may change the system dynamics, and entail a rapid increase of the oscillations of both the structure and the pendulum, leading to full pendulum rotation or <i>chaotic dynamics</i>. To magnetorheological damping is proposed.</p><p>Nonlinear mechanics has to be used to explain undesired response in <i>slender footbridges</i>, such as that occurred in the famous event of the <i>London</i> <i>Millenium Bridge</i>. The observed phenomena can be explained by an analytical <i>nonlinear discrete-time model. </i></p><p><i>Shape memory alloys </i>(SMAs) exhibit very interesting nonlinear thermo-mechanical properties such as<i> shape memory effect </i>and<i> </i><i>superelasticity</i>. SMA elements integrated within composite beams or plates can be used for active modification of structure properties e.g. by affecting their natural frequencies. </p><p>Finite amplitude, resonant, forced dynamics of<i> sagged, horizontal </i>o<i>r inclined, elastic cables</i> have recently undergone meaningful research advances concerned with modelling, analysis, response, and nonlinear/nonregular phenomena. A variety of features of<i> nonlinear multimodal interaction</i> in different resonance conditions are comparatively addressed. </p><p>Non-smooth systems are very common in engineering practice. Three mechanical engineering problems are presented: (i) a <i>vibro-impact </i>system<i> </i>in the form of a moling device, (ii) the influence of the opening and closing of a<i> fatigue crack </i>on the host system dynamics, and (iii) nonlinear interactions between a<i> rotor </i>and snubber ring system. </p><p>This book is aimed at a wide audience of engineers and researchers working in the field of nonlinear structural vibrations and dynamics, and undergraduate and postgraduate students reading mechanical, aerospace and civil engineering.</p> |
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| Descrição Física: | 1 online resource (XVI, 276 pages) 207 illustration, 83 illustration in color, digital. |
| ISBN: | 9789400724730 |
| ISSN: | 0925-0042 |