Simulation Tool for Electrical, Mechanical, Fluid Flow, and Chemical Applications. COMSOL Multiphysics® is a general-purpose software platform, based on advanced numerical methods, for modeling and simulating physics-based problems. With COMSOL Multiphysics, you will be able to account for coupled or multiphysics phenomena.

With more than 30 add-on products to choose from, you can further expand the simulation platform with dedicated physics interfaces and tools for electrical, mechanical, fluid flow, and chemical applications. Additional interfacing products connect your COMSOL Multiphysics simulations with technical computing, CAD, and ECAD software. COMSOL Desktop® for Cross-Disciplinary Product Development COMSOL Desktop® is a powerful integrated environment designed for cross-disciplinary product development with a unified workflow, regardless of the application area. The add-on modules blend in seamlessly with COMSOL Multiphysics, and the way you operate the software remains the same no matter which add-on products are engaged. The model tree in the Model Builder gives you a full overview of the model and access to all functionality - geometry, mesh, physics settings, boundary conditions, studies, solvers, postprocessing, and visualizations.

With COMSOL Multiphysics you can easily extend conventional models for one type of physics into multiphysics models that solve coupled physics phenomena - simultaneously. What's more, accessing this power does not require in-depth knowledge of mathematics or numerical analysis. COMSOL® Puts the Power of Simulation in Your Hands With COMSOL Multiphysics® FEA software, you can simulate virtually anything you want, thanks to the underlying flexibility that complements the intuitive and easy-to-use COMSOL Desktop® interface. For instance, in COMSOL Multiphysics®, you are able to arbitrarily include your own equations that may describe a material property, boundary, source or sink term, or even a unique set of partial differential equations (PDEs). You can then create new physics interfaces from the equations you entered. When creating apps with the Application Builder, you can design your own user interfaces based on your models. These user interfaces can be simplified versions of the model or include only some of the input and output fields you want to give the user of the app access to.

COMSOL Multiphysics® also includes a COMSOL® API for use with Java® that adds extra flexibility for connecting your COMSOL Multiphysics® models with other applications. Operating System Requirements: 64-Bit Operating Systems Windows® 10 Windows® 10 Pro for Workstations Windows® 8.1 Windows® 8 Windows® 7 Windows Server® 2016 Windows Server® 2012 R2 Windows Server® 2012 Windows Server® 2008 R2 Windows HPC Server 2008 R2 Linux Debian® 7, 8, and 9 Red Hat® Enterprise Linux® 6.9 and 7.4 CentOS 7.4 Ubuntu® LTS 14.04 and 16.04 OpenSUSE® Leap 42.2 and 42.3.

COMSOL Multiphysics 5.2a x64 Free download COMSOL Multiphysics 5.2a x64 Free download Descriptions: COMSOL Multiphysics® is a.

Hi EMI is ES (static) and Solid together, you must add Domain nodes to distinguis 'Linear Elastic Material' (without voltage solving) and 'Linear Elastic Dielectric' (for solving with V i.e.) by defining correctly the domains of solid as Linear Elastic material, you will not be asked for the Young modulus of air = linear electric material. Note this physics module does not solve for conduction, so you need to define your GND and Terminal at the interface between solid (Linear Elastic Material), Linear Electric and/or Linear Ealstic Dielectric materials.

Check carefully your doc by the way this applies in my 4. Trial Fusion Ключ Активации. 3a version might be less rich in the previous ones -- Good luck Ivar. Hi EMI is ES (static) and Solid together, you must add Domain nodes to distinguis 'Linear Elastic Material' (without voltage solving) and 'Linear Elastic Dielectric' (for solving with V i.e.) by defining correctly the domains of solid as Linear Elastic material, you will not be asked for the Young modulus of air = linear electric material. Note this physics module does not solve for conduction, so you need to define your GND and Terminal at the interface between solid (Linear Elastic Material), Linear Electric and/or Linear Ealstic Dielectric materials. Check carefully your doc by the way this applies in my 4.3a version might be less rich in the previous ones -- Good luck Ivar. Suzan, You can model the deflection by coupling Electrostatics, Solid Mechanics, and Moving Mesh interfaces. Use the Maxwell surface stress tensor for the boundary load on an electrically conducting material.

I've attached an example model showing the implementation. If the deflection is very small compared to the gap, the Moving Mesh interface would not be required, as the electrostatic force would not vary significantly with the displacement. Luke Gritter AltaSim Technologies Hello, I'm working on COMSOL 4.0a and I'm trying to compute a piece of PDMS which is compressed between two gold plates electrostatically actuated. I add two phisics Electrostatic and Solid.

The electric field is correct but I don't get any displacement. Can someone help me please.

I tryed to chek on Luke's code but I can not open it. I add mine to this message. Thanks for the help! Dolu EDIT: I add the moving mesh. [QUOTE] Suzan, You can model the deflection by coupling Electrostatics, Solid Mechanics, and Moving Mesh interfaces. Use the Maxwell surface stress tensor for the boundary load on an electrically conducting material.

I've attached an example model showing the implementation. If the deflection is very small compared to the gap, the Moving Mesh interface would not be required, as the electrostatic force would not vary significantly with the displacement. Luke Gritter AltaSim Technologies [/QUOTE] Hello, I'm working on COMSOL 4.0a and I'm trying to compute a piece of PDMS which is compressed between two gold plates electrostatically actuated. I add two phisics Electrostatic and Solid. The electric field is correct but I don't get any displacement. Can someone help me please. I tryed to chek on Luke's code but I can not open it.

I add mine to this message. Thanks for the help! Dolu EDIT: I add the moving mesh. Hi order is important, also for the physics nodes!

ALE and solid interact: you should put the ALE BEFORE=ABOVE Solid physics node in the node list, as 'solid' has it's own frame representation that is equivalent to ALE and disables the ALE physics for the 'solid' domain. If you put ALE after solid you double lock the solid mesh, no good;) Then you calculate the forces in the ES but you have no boundary load force input in your solid. You must couple manually i.e. Define the output of one and the input nodes to the other physics, and ensure the variables point to each other -- Good luck Ivar. Hi order is important, also for the physics nodes! ALE and solid interact: you should put the ALE BEFORE=ABOVE Solid physics node in the node list, as 'solid' has it's own frame representation that is equivalent to ALE and disables the ALE physics for the 'solid' domain.

If you put ALE after solid you double lock the solid mesh, no good;) Then you calculate the forces in the ES but you have no boundary load force input in your solid. You must couple manually i.e.

Define the output of one and the input nodes to the other physics, and ensure the variables point to each other -- Good luck Ivar. Hi the eigenfrequency analysis is not influenced by forces, at best by some initial stress in your material. Samsung Galaxy Pocket Plus Rom Download there. In your case you have a non-linear force applying on the plates so the eigenfrequency will be influenced in a non linear way, but this is not caught by a linear eigenfrequency analysis, and I believe the frequency you look for depends on the amplitude. That is far trickier, one way is to run a time series with enough resolution (long time to wait, and let the system damp down from an oscillatory starting point, and do an running FFT on that result) -- Good luck Ivar. Hi the eigenfrequency analysis is not influenced by forces, at best by some initial stress in your material. In your case you have a non-linear force applying on the plates so the eigenfrequency will be influenced in a non linear way, but this is not caught by a linear eigenfrequency analysis, and I believe the frequency you look for depends on the amplitude. That is far trickier, one way is to run a time series with enough resolution (long time to wait, and let the system damp down from an oscillatory starting point, and do an running FFT on that result) -- Good luck Ivar.

Hallo, i'm designing a resonator with a parallel Terminal, the Gnd is elastic metal part in the middle. The idea is to move the grd up n down b/n the two electrodes/terminals (top and bottom electrode), a voltage will be applied simultaneously to the top and bottom electrode so that the Gnd in the middle deforms towards the terminal with applied voltage. Which model would you recommend me? I m working with the comsol 43b version. How can i realize the switching b/n the two terminals? See the attachment file! I would be very thankful for any help Tatek.

Hallo, i'm designing a resonator with a parallel Terminal, the Gnd is elastic metal part in the middle. The idea is to move the grd up n down b/n the two electrodes/terminals (top and bottom electrode), a voltage will be applied simultaneously to the top and bottom electrode so that the Gnd in the middle deforms towards the terminal with applied voltage. Which model would you recommend me? I m working with the comsol 43b version. How can i realize the switching b/n the two terminals? See the attachment file!

I would be very thankful for any help Tatek. Hello Mayank and others, The discussion in this thread is a bit dated and slightly incorrect. If you are interested in modeling electrostatic actuation, then we would recommend that you use the Electomechanics interface available within the MEMS Module. If you're interested in learning about this interface, we suggest that you start with these examples: as well as the other examples within the MEMS Module: Best, Walter.