Determine Burst Pressure
Hello everybody, I'm working on a mems pressure sensor, I want to know how we can calculate the burst pressure of diaphragm. Any help will be greatly appreciated.
View Articleoutput data to file via script
I am trying to script a model using the .m file and it seems to be able to do everything including the postprocessing but amazingly I can't seem to find an option to simply output the data to a txt...
View ArticleGeometric Nonlinearity problem
I have an odd problem. I am trying to recreate the Large Deformation Beam model (www.comsol.com/showroom/documentation/model/204/) before I start my own project to investigate buckling. I was following...
View ArticleColors messed up when exporting GIF
Hello, When I export a GIF from COMSOL, often times the color scheme will be all messed up. Instead of a fluid change from blue to red, I will see about 16 distinct colors. This looks terrible and is...
View ArticleNon-isothermal flow problem
Hi there, I am trying to create a model that is similar to the cold water glass model found within the comsol model library. However, I want to have a temperature governed by a step function at the...
View ArticleModeling a water turbine using actuator disc theory
Hello, I'm trying to model the flow in a (simplified) tidal channel. For now there is one turbine placed in the channels (this might be extended to two or more). With this model I hope to study the...
View ArticleIssues with Full Coupling of Physics
Good day, I am having issues with fully coupling two physics. My system contains the solid mechanics physics coupled with a general form PDE to model concentration change and the diffusive properties...
View ArticleCoupling B/W two solid stress-strain modules
Hi all, I am trying to model a 3D structural mechanics problem with two separate solid stress-strain modules coupled together at the interfacial boundary through equal displacement boundary condition...
View Articleadvice for simulation set up or suitable tutorial (3D stress distribution...
Hi All, I am trying to help my fellow Orthodontics to showcase COMSOL's ability to simulate one of his problem. But I am struck and getting inconsistent results. The simulation is very basic and...
View ArticleFSI - vibration study of a cylinder in a fluid flow
Hello all, I am new to Comsol. I am trying to study flow induced vibration of a cylinder fixed at one end and free at other. The cylinder is placed vertically against the flow. Is it possible to find...
View ArticleCooling of a metal box
Hallo to everybody! I'm trying to realize the simulation of a metal box (fillled with air and including an heat source, and surrounded laterally by other boxes that I consider through the...
View ArticleModel couplings: Integration vs. Summation over nodes
Hello, I am working with two modules Structural Mechanics and general form PDE as coupled. I need a model coupling to define an integration. When I choose "Summation over nodes", my model works fine,...
View Articlemeshvol
Hello, I'm looking to extract the area/volume of each mesh element of my model. I then discovered the quantity meshvol. However I'm not exactly sure what this gives me: using meshvol I get a scalar...
View ArticleIs there a way to do a temperature dependent heat source in Conjugated Heat...
Hi I'm working in the conjugated heat transfer physics and I'm hoping/wondering if there is a way to make the heat source temperature dependent. I have a cable that is covered with different materials...
View ArticleList expressions and predefined quantities in Maltab or Java
Hello everyone, I'm looking for a way to find the "expressions and predefined quantities" a model offers within matlab or java. Via COMSOL-GUI, this is simply possible by clicking one of the two...
View ArticleAbout FBAR（BAW）Filter
Hi everyone Is there anyone who has used comsol to simulate FBAR/BAW filters? I want to simulate FBAR filters. But I have some problems on simulation. Is there anyone could give me sonme advice on...
View Articleimport CAD files (from ProE to Comsol)
hello, I've tried comsol and I tried to import a CAD file in step format (*.STP) created from Pro Engineer. Comsol starts to import, and stops at 50% of the loading...nothing happened... I don't know...
View ArticleHow I can combine two physics (es and emw)?
Hi, could you suggest me how to use 2 different physics inside a comsol simulation? I would like to simulate a system with electromagnetic waves physics and electrostatic physics, in order to see how a...
View ArticleFailed to find a solution due to the relative error
Hello, I am modelling piezoelectric sensor using MEMS module. COMSOL was able to find the solution when I ran the frequency domain study with increment of 1HZ. However, If I ran with smaller steps (ex....
View Articleparametric sweep in a contact problem
The attached file shows a simple axisymmetric problem in 4.3a where a screw-shaped part is being pushed into some uniform bone by an axial force. In the attached model, there are identity pairs between...
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