Frequency domain analysis with two different frequencies
Hello,I don't know if the title makes sense. Currently, with a frequency domain analysis I can evaluate steady dynamic response of a system with a set of frequencies for an harmonic load. Instead of...
View ArticleSoft magnet close to permanent magnet
Hello everyone,I'm trying to simulate a pair of soft magnetic tips, actuated by an external permanent magnet.In the folliwing pictures, you can see the two soft magnetic tips. The permanent magnet is...
View ArticleSolved! Good in comsol, failed in Matlab: Illegal input vector illegal entity...
Hello every body, I am using comsol 5.4 and I built my model and solved the problem and everything went fine and a good solution was obtained in comsol. Exporting the same exact model to matlab is...
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Trying to fix the "Inconsistent Units" problem
Hi, I'm trying to simulate the Fitzhugh-Nagumo model of neurons on COMSOL 5.3a, exactly as it was done in the article "3D-Simulation of Action Potential Propagation in a Squid Giant Axon" by Appali et...
View ArticleApply a point load on an arbitrary point?
I am a new in Comsol. Now i want to compute frequency response of a composite plate under a point load. i want to define the load on the arbitrary point. So i defined a point at geometry node, but it...
View ArticleBatch importing CAD models into COMSOL?
I'm using SIEMENS NX to create the CAD model which will subsenquently be imported into COMSOL for further simulation. Each CAD model is exactlly the same except for one parameter value. So it's a...
View ArticleDo boundary elements work in eigenfrequency analysis?
I am interested in calculating the mode shapes and frequencies for a structure surrounded by a fluid (air or water) to get the reduced frequency from the fluid loading. When I perform an eigenfrequency...
View ArticleBiot model with Poroelastic Waves or with Poroacoustics?
I'm very new to COMSOL and trying to study a Biot model of a porous material where only the bulk modulus, sound speed, and impedance of the material are known. I know that there is a Biot model in the...
View ArticleProblem
I am desigining a capacitor. I need to plot capacitance vs separation between two plates. 3D plot is generated for all the values of parameters. But now i want to generate 1D plot between capacitance...
View ArticleMoving Mesh and gravity falling
Hello,I would like to make a dynamic simulation using moving mesh. To start, I just wanted to make an iron sphere falling. I used moving mesh(ale) and global equation (ge) to define the speed and the...
View ArticleIs it possible to simulate the erosion of soil particle in dam problem?
I want to simulate the erosion of soil particle due to steady state seepage. Is it possible to do it in comsol ? If yes , please let me know how. Thanks
View Articleinput 3D polarization into comsol model
I am doing a 3D wave optics modeling, and want to use a 3D polarization. For 3D polarization I mean I want to give every point in a 3D domain an arbitrary polarization. Is there anybody who knows how...
View ArticleApplying transient electric field to a fluid dynamic simulation
I am currently attempting to simulate a droplet of conductive fluid moving through an electrical field. The droplet is moving correctly over time, however from what I can tell the electrical simulation...
View ArticleExporting plots from parametric sweep with variable filenames
Hi,I'm running a large parametric sweep over a variable - let's call it 'a.' There's a 1D plot that I've defined in "Results," and for each of the runs in the parametric sweep, I'd like to...
View Articleequation in frequency domain
Hi, Is there anyone who can tell me that from where can i get the reference of equation (Under Study 1, frequency domain.) which are given in comsol "ewfd"....i have attached the image ,,,please see...
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Strange Issue in Nonlinear Viscoelastic Solid Mechanics Simulation
Good Afternoon Everyone,I am attempting to implement a predictive model for Viscoelastic deformation in COMSOL. To do this, I have derived several models from fundamental continuum mechanics, but I am...
View Articleimpedance vs freq plot
Dear All, I want to plot the response of my interdigitated electrode as an impedance vs freq plot. Any insights on how I should proceed with the same would be greatly appreciated. I tried Results>1...
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Export Comsol Simulation result to Comsol geometry
Hello,assuming I have a stationary heat transfer simulation with some arbitrary boundary conditions.What I want to have is the polygon tracing the interface layer between elements that are of phase 1...
View ArticleHow to save data from parameters to a .txt file?
Hello! I have very simple comsol application with two input fields. I want to save this data to a .txt file. I have tried to use JFileChooser from javax.swing but in my case comsol has displayed an...
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