نتایج جستجو برای: nonlinear micro

تعداد نتایج: 332256  

Journal: :Optics express 2008
Yonghao Xu Xianfeng Chen Yu Zhu

This paper gives the simulation results on micro-diameter-scale liquid core optical fiber (LCOF) filled with different kinds of liquids. The nonlinear and group velocity dispersion (GVD) properties of the microdiameter- scale LCOF are achieved. The simulation of supercontinuum generation of LCOF is also obtained. The calculations show that LOCF can provide huge nonlinear parameter and large spa...

Journal: : 2022

It is shown, that increasing the stability of synchronous self-oscillations in fiber lasers with nonlinear mirrors, based on micro-optomechanical resonators (micro-oscillators), can be achieved due to transformation wavefront laser radiation, interacting micro-oscillators. These transformations are unique properties mode interference composite singlemode-multimode-singlemode structures. Keyword...

2008

In this tutorial, we cover the effect of nonlinear spring forces on (micro)resonators. The motivation of analysis is: i. to understand the nonlinear effects observed with real resonators and ii. to estimate the maximum vibration amplitude where vibrations are almost linear. Knowing the range for linear vibrations sets the dynamic range for resonators. On the lower end, the usable range is limit...

2004
Dongsheng Liu D. Q. Cao Charles H.-T. Wang

The modelling strategy and simulation of flexible components of MEMS are addressed in this article. A newly developed Cosserat Rod Element (CRE) approach is employed to model the nonlinear dynamic equations of motion for micro resonators. Models constructed using this approach seek to capture the most significant characteristics of a microstructure in a few variables governed by a few ordinary ...

2013
Céline Casenave Emmanuel Montseny Henri Camon

This paper focuses on the identification of nonlinear dynamic models for physical systems such as electrostatically actuated micro-electro-mechanical systems (MEMS). The proposed approach consists in transforming, by means of suitable global operations, the input-output differential model in such a way that the new equivalent formulation is well adapted to the identification problem, thanks to ...

2012
Bjorn Olofsson Olof Sornmo Ulrich Schneider Marc Barho Anders Robertsson Rolf Johansson

We consider the problem of modeling and control of the nonlinear dynamics of a micro manipulator, utilized for machining operations in combination with industrial robots. Position control of the micro manipulator is a challenging problem because of the actuation principle, which is based on piezo-actuators with inherent nonlinear behavior. The major nonlinearities in the manipulator are identif...

2010
Satish K. Chimakurthi Carlos E. S. Cesnik Bret K. Stanford

Flexible flapping wings have garnered a large amount of attention within the micro aerial vehicle community: a critical component of computationalmicro aerial vehicle simulations is the representation of the structural dynamics behavior of the flapping-wing structure. This paper discusses the development of a new nonlinear finite element solver that is based on a corotational approach and suita...

2016
Sarah Johnson Yoonseok Lee

Micro-electro-mechanical systems or MEMS are used in a variety of today’s technology and can be modeled using equations for nonlinear damped harmonic oscillators. Mathematical expressions have been formulated to determine resonance frequency shifts as a result of hardening and softening effects in MEMS devices. In this work we experimentally test the previous theoretical analysis of MEMS resona...

Journal: :Circuits and Systems 2010
Preecha P. Yupapin Muhammad Arif Jalil Iraj Sadegh Amiri I. Naim Jalil Ali

We propose a novel system of a broadband source generation using a common soliton pulse (i.e. with center wavelength at 1.55 m) propagating within a nonlinear microring and nanoring resonators system. A system consists of a micro ring resonator system incorporating an add/drop filter, whereas the large bandwidth signals can be generated, stored and regenerated within the system. By using the a...

M Akbarzadeh Khorshidi M Shariati,

The novelty of this study is presentation of an exact solution for prediction of postbuckling behavior of shear deformable micro- and nano-scale beams based on modified couple stress theory and using principle of minimum potential energy. Timoshenko and Reddy-Levinson beam theories are applied to consider the shear deformation effect and Von Karman nonlinear kinematics is used to describe the n...

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