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Squeeze-film Effects in Modelling Dynamic MEMS ...
57,50 € *
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This work studies the squeeze film effects in dynamic MEMS devices. The emphasis is on the development of compact analytical models due to their amenability in device level simulations using lumped parameters. To provide context to the current work first the computational efficacy of lumped parameter modelling of dynamic MEMS devices is demonstrated in MATLAB/Simulink software environment using a MEMS gyroscope and a MEMS microphone as examples. This is followed by a detailed comparative study of equivalent electrical circuit models for a MEMS microphone wherein the importance of accurate extraction of lumped mass, stiffness and damping due to squeeze film is brought into focus. Consistent expressions are derived for equivalent mass and stiffness of plate and beam structures using Rayleigh's energy methods. Discrepancies in modelling compressible squeeze film are brought out and the need for an in depth study of squeeze film behaviour is highlighted leading to a strong motivation for the development of compact squeeze film models.

Anbieter: Dodax AT
Stand: 24.01.2020
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Torres, Jorge: Predicción de la ingestión de ai...
29,00 € *
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Erscheinungsdatum: 12/2011, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Predicción de la ingestión de aire en Squeeze Film Dampers, Titelzusatz: Cojinetes Hidrodinámicos, Autor: Torres, Jorge, Verlag: EAE, Sprache: Spanisch, Rubrik: Maschinenbau // Fertigungstechnik, Seiten: 76, Informationen: Paperback, Gewicht: 130 gr, Verkäufer: averdo

Anbieter: averdo
Stand: 24.01.2020
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Vibrations of Elastic Systems
249,98 € *
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This work presents a unified approach to the vibrations of elastic systems as applied to MEMS devices, mechanical components, and civil structures.Applications include atomic force microscopes, energy harvesters, and carbon nanotubes and consider such complicating effects as squeeze film damping, viscous fluid loading, in-plane forces, and proof mass interactions with their elastic supports. These effects are analyzed as single degree-of-freedom models and as more realistic elastic structures. The governing equations and boundary conditions for beams, plates, and shells with interior and boundary attachments are derived by applying variational calculus to an expression describing the energy of the system. The advantages of this approach regarding the generation of orthogonal functions and the Rayleigh-Ritz method are demonstrated.A large number of graphs and tables are given to show the impact of various factors on the systems' natural frequencies, mode shapes, and responses.

Anbieter: Dodax
Stand: 24.01.2020
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Vibrations of Elastic Systems
313,93 € *
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This work presents a unified approach to the vibrations of elastic systems as applied to MEMS devices, mechanical components, and civil structures.Applications include atomic force microscopes, energy harvesters, and carbon nanotubes and consider such complicating effects as squeeze film damping, viscous fluid loading, in-plane forces, and proof mass interactions with their elastic supports. These effects are analyzed as single degree-of-freedom models and as more realistic elastic structures. The governing equations and boundary conditions for beams, plates, and shells with interior and boundary attachments are derived by applying variational calculus to an expression describing the energy of the system. The advantages of this approach regarding the generation of orthogonal functions and the Rayleigh-Ritz method are demonstrated.A large number of graphs and tables are given to show the impact of various factors on the systems' natural frequencies, mode shapes, and responses.

Anbieter: Dodax
Stand: 24.01.2020
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Vibrations of Elastic Systems
316,70 € *
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This work presents a unified approach to the vibrations of elastic systems as applied to MEMS devices, mechanical components, and civil structures.Applications include atomic force microscopes, energy harvesters, and carbon nanotubes and consider such complicating effects as squeeze film damping, viscous fluid loading, in-plane forces, and proof mass interactions with their elastic supports. These effects are analyzed as single degree-of-freedom models and as more realistic elastic structures. The governing equations and boundary conditions for beams, plates, and shells with interior and boundary attachments are derived by applying variational calculus to an expression describing the energy of the system. The advantages of this approach regarding the generation of orthogonal functions and the Rayleigh-Ritz method are demonstrated.A large number of graphs and tables are given to show the impact of various factors on the systems' natural frequencies, mode shapes, and responses.

Anbieter: Dodax AT
Stand: 24.01.2020
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Vibrations of Elastic Systems
256,99 € *
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This work presents a unified approach to the vibrations of elastic systems as applied to MEMS devices, mechanical components, and civil structures.Applications include atomic force microscopes, energy harvesters, and carbon nanotubes and consider such complicating effects as squeeze film damping, viscous fluid loading, in-plane forces, and proof mass interactions with their elastic supports. These effects are analyzed as single degree-of-freedom models and as more realistic elastic structures. The governing equations and boundary conditions for beams, plates, and shells with interior and boundary attachments are derived by applying variational calculus to an expression describing the energy of the system. The advantages of this approach regarding the generation of orthogonal functions and the Rayleigh-Ritz method are demonstrated.A large number of graphs and tables are given to show the impact of various factors on the systems' natural frequencies, mode shapes, and responses.

Anbieter: Dodax AT
Stand: 24.01.2020
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Dynamic Analysis of Mechanical Systems with Imp...
79,00 € *
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The goal of this book is to present general methodologies for dynamic analysis of mechanical systems with imperfect, that is, considering joint clearances and their tribological characteristics and surface compliance properties. Two and three- dimensional comprehensive methodologies for imperfect kinematic joints with and without lubrication are proposed. In the sequel of this process, different contact-impact force models are revisited in face of their suitability to represent collision between the bodies connected by imperfect joints. The incorporation of friction forces, based on the Coulomb friction law, is also discussed. Moreover, a general methodology, which accounts for squeeze-film and wedge-film actions, including the cavitation effect, for modeling dynamically loaded journal bearings is also presented. The equations that govern the dynamical behavior of the general mechanical systems incorporate the contact-impact forces due to the collision between the bodies that constitute the imperfect joints, as well as the hydrodynamic forces owing to the lubrication effect.

Anbieter: Dodax
Stand: 24.01.2020
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Dynamic Analysis of Mechanical Systems with Imp...
81,30 € *
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The goal of this book is to present general methodologies for dynamic analysis of mechanical systems with imperfect, that is, considering joint clearances and their tribological characteristics and surface compliance properties. Two and three- dimensional comprehensive methodologies for imperfect kinematic joints with and without lubrication are proposed. In the sequel of this process, different contact-impact force models are revisited in face of their suitability to represent collision between the bodies connected by imperfect joints. The incorporation of friction forces, based on the Coulomb friction law, is also discussed. Moreover, a general methodology, which accounts for squeeze-film and wedge-film actions, including the cavitation effect, for modeling dynamically loaded journal bearings is also presented. The equations that govern the dynamical behavior of the general mechanical systems incorporate the contact-impact forces due to the collision between the bodies that constitute the imperfect joints, as well as the hydrodynamic forces owing to the lubrication effect.

Anbieter: Dodax AT
Stand: 24.01.2020
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MEMS Linear and Nonlinear Statics and Dynamics
159,99 € *
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MEMS Linear and Nonlinear Statics and Dynamics presents the necessary analytical and computational tools for MEMS designers to model and simulate most known MEMS devices, structures, and phenomena. This book also provides an in-depth analysis and treatment of the most common static and dynamic phenomena in MEMS that are encountered by engineers. Coverage also includes nonlinear modeling approaches to modeling various MEMS phenomena of a nonlinear nature, such as those due to electrostatic forces, squeeze-film damping, and large deflection of structures. The book also:Includes examples of numerous MEMS devices and structures that require static or dynamic modeling Provides code for programs in Matlab, Mathematica, and ANSYS for simulating the behavior of MEMS structures Provides real world problems related to the dynamics of MEMS such as dynamics of electrostatically actuated devices, stiction and adhesion of microbeams due to electrostatic and capillary forces MEMS Linear and Nonlinear Statics and Dynamics is an ideal volume for researchers and engineers working in MEMS design and fabrication.

Anbieter: Dodax
Stand: 24.01.2020
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