Studying how your product behaves under a mechanical load is one of the most critical steps in the design process. Electromagnetical model of an induction motor in comsol multiphysics 241 we reserve all rights in this document and in the information contained therein. In addition, the mathematical model which is used in the comsol multiphysics modeling tool will be introduced briefly. Nonlinear structural material analysis software from comsol. Addon products expand the simulation platform for electromagnetics, structural, acoustics, fluid flow. Comsol provides an ide and unified workflow for electrical, mechanical, fluid, acoustics, and chemical applications.
You will also see how you can include additional userdefined material models in. Comsol5 multiphysics is one of the most valuable software modeling tools for engineers and scientists. A comsol multiphysics app for the thermal analysis of electronic devices g. Using a small number of components to produce an exb field, an het can accelerate ions to extremely high velocities to provide thrust. View the major updates and download the software here. The predefined physical constants in comsol now use the 2010 codata recommended values, which in some cases differ slightly from the previous values from 2006. Thermal actuator parameterized comsol multiphysics. The device was comprised of a fixedfree polysilicon microcantilever beam with electrostatic actuation and capacitive sensing. A practical guide to geometric regulation for distributed parameter systems. The dcinduced resistive heating causes a temperature rise in the actuator, which leads to thermal expansion.
Mems based electrothermal actuators are easier to fabricate. A good intruduction to fem and to learn to use comsol. There are many comsol multiphysics based textbooks and guides written for students, professors, and engineering professionals alike. You can customize structural analyses for your unique needs by combining the builtin material models and even defining your own models based on, for example, stress or strain invariants. We can similarly derive the expression for the mechanical force for linear timeharmonic analysis with a dc bias. This stepbystep instructional video will guide you through the modeling workflow, with an emphasis on structural mechanics modeling.
A computational approach to biomedical problems guigen zhang multiphysics modeling with finite element methods william b. Mems electrostatic comb actuators with different configurations. The preset studies vary depending on the physics interfaces you include in a simulation. Modelling of different mems pressure sensors using comsol. How to apply load and actuation voltage to a beam in comsol.
Apr 12, 2016 according to me, comsol multiphysics is one of software which is very easy to learn provided one must know theoretical part of simulation like equations and emperical relation one has to consider for specific problem. The use of comsol multiphysics is due to the flexibility in this particular cad tool to prepare the mirror structure and the thermal actuators which need to be analyzed. Use of comsol multiphysics for efficient, automatic inverse modeling of pdebased systems. Electrical control of bacteriapowered microrobots kurzweil. Comsol is a global provider of simulation software for product design and research to technical enterprises, research labs, and universities. Actuators are used for the transformation of non mechanical input energy into mechanical output energy. Modeling nonlinear materials in comsol multiphysics.
Design and simulation of mems based electrothermal. Equationbased modeling enables custom simulations in comsol multiphysics and is a powerful method that further extends the many capabilities already available in the product suite. Use of comsol multiphysics for automated electrostatic. In this model version, a fully coupled electricalthermal structural. Abstract of electric field control of bacteriapowered microrobots using a static obstacle avoidance algorithm a bacteriapowered microrobot bpm is a hybrid robotic system consisting of an su8 microstructure with active surfaces or bacterial carpets, in which massive arrays of biomolecular flagellar motors work cooperatively. Design engineers can easily create models of common devices such as actuators, sensors, oscillators, filters, ultra sonic transducers, biomems, and much more.
Magnetic gears can be classified into three different types based on their operations. For information about the comsol commands and running comsol in general, see the comsol. Physics simulation tool for scientists and engineers with features such as meshing, postprocessing, cad, and simulation applications. Mems simulation and modeling with comsol multiphysics. Use of comsol multiphysics for automated electrostatic mems. Products, components, and devices can always be improved. There are many types of micro actuation mechanisms, most commonly used are piezoelectric, magnetic, thermal, sma, electrochemical, electrostatic actuation. Furthermore, you can build custom applications based on your model with the application builder and deploy them throughout your organization to promote crossfunctional product development. A comsol multiphysics app for the thermal analysis of. Electromagnetical model of an induction motor in comsol multiphysics iv we reserve all rights in this document and in the information contained therein.
This component enables users to build apps based on comsol models that can be run on almost any operating system windows. The comsol multiphysics fea software comes with predefined physics interfaces with specialized settings, making it easy to set up and run analyses. A mirror design capable of the above mentioned movement is simulated with comsol multiphysics. Electrostatically actuated cantilever comsol multiphysics. To develop highperformance controllers for adaptive optics ao systems, it is essential to first derive sufficiently accurate statespace models of deformable mirrors dms. There is not a free version of comsol multiphysics. Design and simulation of piezo actuated microgripper by comsol multiphysics article pdf available in journal of computational and theoretical nanoscience 1. The capabilities of the optimization module can be used in conjunction with any combination of other comsol products. This guide is a supplement to the comsol multiphysics users guide. This chapter contains a short optimization module overview. Comsol multiphysics is a powerful simulation software platform for modeling and optimizing the design of any. Can anyone tell me the steps to apply the load and actuation. The product of velocity and concentration flux is shown in figure 5, which also shows the corresponding solutions for a constant velocity profile u 1. By default, comsol uses the system default browser, but you can also select to use a custom browser.
In this stepbystep instructional video, you will learn how the solid mechanics interface in comsol multiphysics can help you solve structural mechanics problems through simulation. A particular strength is its ability to account for coupled or multiphysics phenomena. How to model structural mechanics in comsol multiphysics. Numerical modeling of 3d electrowetting droplet actuation. Comsol multiphysics the comsol installation guide replaces the earlier comsol installation and operations guide and comsol quick installation guide with a focus on information about how to install the comsol software on the supported platforms. The essence of polarity change of alnico5 is a succession of magnetization. Electromagnetical model of an induction motor in comsol.
Capacitive sensor design using comsol provides the user with a wide variety of tools. Its comsol multiphysics product is an integrated software environment for creating physicsbased models and simulation apps. Modeling magnetic gears in comsol multiphysics comsol blog. The comsol software product suite comsol multiphysics. Simulation tool enabling physicsbased modeling through optimizations and verifications.
Applications to aquifer characterization conference paper pdf available january 2006 with 514 reads. Can anyone help with the electrostatic actuation of a cantilever. In this archived webinar, we demonstrate how you can easily calibrate these material models to use in your finite element analysis with comsol multiphysics and the nonlinear structural materials module. The comsol multiphysics users guide contains a list. In addition to using multiphysics modeling for your own projects, you can also turn your models into simulation applications and. Optimization of an electromagnetic actuator with comsol. This book, an updated edition of the previously published, comsol for engineers, covers comsol5 which now includes a revolutionary tool, the application builder. The actuator modeled here is dedicated for charge changing valve actuation in internal combustion engines. Watch the webinar to learn how to implement custom models in the comsol environment using partial differential equations pdes to translate the laws of nature into. Prasad3, anil gujjar4, vineet bansal5 university institute of engineering and technology, kurukshetra university, kurukshetra1, electronics science department, kurukshetra university, kurukshetra2, 3, 4, 5.
Eddy current testing ect is widely used to check the integrity of electrically conducting parts and notably to detect flaws. The comsol multiphysics approach starts with first principles like transport phenomena, electromagnetic field theory, and solid mechanics as the basic fibers of the software. Cfd, and comsol multiphysics 5, 3 rd edition james wilkes z. Design of mems pressure sensors using comsol multiphysics comsol multiphysics is a powerful tool for modeling and solving all kinds of scientific and engineering pressure sensors. The building of an fea model of an electric cell actuator using comsol multiphysics validation of this model through the avid and espi measurement systems the building of an fea model of an electric loudspeaker using comsol multiphysics validation of this model throughan acoustic measurement systems. The cantilever model makes use of three comsol multiphysics applications 3d structural with squeezed film damping smsld plus mmfd, deformed mesh ale and electrostatics emes. It allows conventional physicsbased user interfaces and coupled systems of partial differential equations pdes. This book is designed for engineers from the fields of mechanical, electrical, and civil disciplines, and introduces multiphysics modeling techniques and examples accompanied by practical applications using comsol 4.
Modeling microfluidic separations using comsol multiphysics. In the first step of the simulation, several operating points are calculated using the script language of comsol multiphysics. The latest version of comsol multiphysics, version 4. Comsol multiphysics not only allows easy set up of circuit models, which you can do within the software itself or by importing a spice net list, but also the subsequent connection of those circuit models to finite element models. Modeling microresonators with electrostatic actuation. A typical figure of merit for the performance of the magnetic circuit is the parameter bl, or force factor, which is the product of the magnetic flux in the air gap and length of the coil. Electrostatically actuated cantilever on comsol youtube. Chemical reaction engineering modeling and simulation in. Does anyone use comsol multiphysics for simulation. The user can simulate a design, test for the capacitance and observe the effects on capacitance by changing parameters such as dielectric permittivity of materials. An electromagnetical model of an induction motor is developed in twodimensions in the finite. The nonlinear structural materials module augments the functionality of structural mechanics models in comsol multiphysics. Simulating semiconductor devices with comsol multiphysics.
I find the book interesting and it is a good first introduction course on the fem software comsol multiphysics r, and comsol is for me, today, the absolute best way, for science and engineering students, to learn physics particularly how physical phenomena couple, and this is essential and the only way to understand small scale devices such as mems, or optomems. In addition, hets can achieve an i sp of up to 3000 seconds. Comsol multiphysics software is one of the most valuable software modeling tools for engineers and scientists. You will also see how you can include additional userdefined material models in your numerical simulations. The discretized design variables included material distribution, sensing and actuation electrode placement, length of the initial gap, actuation voltage, and beam thickness. Pdf use of comsol multiphysics for efficient, automatic. Apr 19, 2016 the steps for modeling your 3d inductor in comsol multiphysics. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. There are many comsol multiphysicsbased textbooks and guides written for students, professors, and engineering professionals alike.
The electrostatic force is thus a sum of a dc force and a timeharmonic force at the excitation frequency. Understanding enable intuition for further innovation testing of new ideas. Use of comsol multiphysics for efficient, automatic inverse. As i am very new to comsol multiphysics, its very difficult for me to find the procedure for it. New simulation tools added to comsol multiphysics cambridge. Then, you can weave these fibers together in a selfconsistent way to solve your particular simulation needs. Modeling software for rf, microwave, and millimeterwave designs. Pdf design and simulation of piezo actuated microgripper. Comsol multiphysics is a crossplatform finite element analysis, solver and multiphysics simulation software. The larger the bl parameter, the higher the performance of the magnetic circuit. To determine the optimal shape of an iron yoke for a magnetic circuit, you can use topology optimization.
Display and edit only the most important simulation parameters synchronize or importexport parameters and variables between excel and comsol multiphysics. Dielectric droplet actuation have been numerically studied using. Comsol multiphysics 5 same filename as the mphfile plus the extension. Adds a comsolspecific toolbar to the excel ribbon for displaying geometry and mesh as well as running a simulation visualize comsol multiphysics results in excel. Modeling stresses and strains in comsol multiphysics. Piezoelectric pressure sensor is also designed with circular radius of 180. However, it is often challenging to develop realistic largescale finite element fe statespace models that take into account the system damping, actuator dynamics, boundary conditions, and multiphysics phenomena.
We also show you how to compute the induced voltage, copper loss in stator. The elastic cantilever beam is one of the elementary structures used in mems designs. The structural mechanics module includes both predefined material models to choose from and the ability to enter userdefined material models, depending on the nature of your analysis. With the rf module, you can optimize designs by investigating effects such as electromagnetic wave propagation, microwave heating, and rf heating ensuring that you create the best products possible and get ahead of others in your field. Particular functionality may be common to several products. Using comsol multiphysics in eddy current non destructive testing context. Curvilinear coordinate systems for curve geometric shapes make it easy to define anisotropic material properties in bent geometric shapes. Electrostatic actuation is a common actuation method for microresonators. With comsol, it is also possible to observe the effects of temperature on the capacitance value. Read 20 answers by scientists with 3 recommendations from their colleagues to the question asked by ishant jain on jul, 2012. Learn how to use comsol multiphysics and the structural mechanics module by conducting a static analysis of a mechanical structure. How to set up and run a simulation with comsol multiphysics.
In the simulation part, the new model and some comparison with earlier results will be introduced. Learn how to model these types of systems in comsol multiphysics. Modeling and simulation also lets you propose some designs and process conditions, and then tinker with them or optimize them. Warning your internet explorer is in compatibility mode and may not be displaying the website correctly. Pdf fe simulation of a dielectric elastomer actuator. We have strived to achieve backward compatibility with the previous version and to include all functionality that is available there.
An automated design tool using comsol multiphysics 3. Procurar por livros baseados no comsol multiphysics. A comparison of structure design and materials using comsol 3. The hall effect thruster het shown in figure 1, is a relatively simple type of ep device. Using comsol multiphysics in eddy current non destructive. This tutorial model of a twohotarm thermal actuator couples three different physics phenomena. Evaluate your 3d inductor design with comsol multiphysics. Comsol multiphysics is a generalpurpose simulation software for modeling designs, devices, and processes in all fields of engineering, manufacturing, and scientific research. Electrostatic actuation is one of the most common force generation schemes.
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