Angebote zu "Dynamic" (19 Treffer)

Kategorien

Shops

Squeeze-film Effects in Modelling Dynamic MEMS ...
57,50 € *
ggf. zzgl. Versand

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: 23.01.2020
Zum Angebot
MEMS Linear and Nonlinear Statics and Dynamics
159,99 € *
ggf. zzgl. Versand

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: 23.01.2020
Zum Angebot
MEMS Linear and Nonlinear Statics and Dynamics
164,47 € *
ggf. zzgl. Versand

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 AT
Stand: 23.01.2020
Zum Angebot
Dynamic Analysis of Mechanical Systems with Imp...
79,00 € *
ggf. zzgl. Versand

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: 23.01.2020
Zum Angebot
Dynamic Analysis of Mechanical Systems with Imp...
81,30 € *
ggf. zzgl. Versand

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: 23.01.2020
Zum Angebot
Development and Structuring of CMBS in Australia
79,00 € *
ggf. zzgl. Versand

CMBS are an important segment of the real estate debt markets which reduce the commercial property sector s dependence on bank financing. Until the advent of the credit squeeze in Q3:2007, the CMBS market was one of the most dynamic and fastest-growing sectors in the capital markets, for a market which was virtually non-existent prior to 1990. Very little academic literature exists on the development and structuring of Australian CMBSs. Through a cogent review and explanation of features of international and Australian CMBSs, the book provides a better understanding of the status and changing nature of the Australian CMBS market. Artificial neural networks and ordinal regressions are used as alternative methods to determine CMBS credit ratings. Surveys on Australian CMBS arrangers and issuers provide insights into structuring issues they consider necessary to obtain a high credit rating and pricing issues necessary for the success of an issue. The findings of this book can be useful to revive the frozen Australian CMBS market, and should be especially useful to students and professionals in property investment and finance.

Anbieter: Dodax
Stand: 23.01.2020
Zum Angebot
Modeling of AFM Cantilever
35,90 € *
ggf. zzgl. Versand

Atomic force microscopy (AFM) can be used for atomic and nanoscale surface characterization in both air and liquid environments. AFM is basically used to measure the mechanical, chemical and biological properties of the sample under investigation. AFM contains basically a base-excited microcantilever with nano tip along with a sensing circuit for scanning of images. Design and analysis of this microcantilevers is a challenging task in real time practice. In the present work, design and dynamic analysis of rectangular microcantilevers in tapping mode with tip-mass effect is considered. Computer simulations are performed with both lumped-parameter and distributed parameter models. The interatomic forces between the nano tip mass and substrate surfaces are treated using Lennard Jones (LJ) model and DMT model. The equations of motion are derived for both one-degree of freedom lumped parameter model with squeeze-film damping and distributed parameter model under the harmonic base excitation. Also the nonlinearity of the cantilever is investigated by considering cubic stiffness. The distributed parameter model is simplified with one mode approximation using Galerkin's scheme.

Anbieter: Dodax
Stand: 23.01.2020
Zum Angebot
Development and Structuring of CMBS in Australia
81,30 € *
ggf. zzgl. Versand

CMBS are an important segment of the real estate debt markets which reduce the commercial property sector s dependence on bank financing. Until the advent of the credit squeeze in Q3:2007, the CMBS market was one of the most dynamic and fastest-growing sectors in the capital markets, for a market which was virtually non-existent prior to 1990. Very little academic literature exists on the development and structuring of Australian CMBSs. Through a cogent review and explanation of features of international and Australian CMBSs, the book provides a better understanding of the status and changing nature of the Australian CMBS market. Artificial neural networks and ordinal regressions are used as alternative methods to determine CMBS credit ratings. Surveys on Australian CMBS arrangers and issuers provide insights into structuring issues they consider necessary to obtain a high credit rating and pricing issues necessary for the success of an issue. The findings of this book can be useful to revive the frozen Australian CMBS market, and should be especially useful to students and professionals in property investment and finance.

Anbieter: Dodax AT
Stand: 23.01.2020
Zum Angebot
Modeling of AFM Cantilever
37,00 € *
ggf. zzgl. Versand

Atomic force microscopy (AFM) can be used for atomic and nanoscale surface characterization in both air and liquid environments. AFM is basically used to measure the mechanical, chemical and biological properties of the sample under investigation. AFM contains basically a base-excited microcantilever with nano tip along with a sensing circuit for scanning of images. Design and analysis of this microcantilevers is a challenging task in real time practice. In the present work, design and dynamic analysis of rectangular microcantilevers in tapping mode with tip-mass effect is considered. Computer simulations are performed with both lumped-parameter and distributed parameter models. The interatomic forces between the nano tip mass and substrate surfaces are treated using Lennard Jones (LJ) model and DMT model. The equations of motion are derived for both one-degree of freedom lumped parameter model with squeeze-film damping and distributed parameter model under the harmonic base excitation. Also the nonlinearity of the cantilever is investigated by considering cubic stiffness. The distributed parameter model is simplified with one mode approximation using Galerkin's scheme.

Anbieter: Dodax AT
Stand: 23.01.2020
Zum Angebot