the free vibration of the cantilever
Hi everyone: The initial displacement D=1.05mm, is placed on the end of the cantilever beam, to solve the velocity response of the beam end. First, I select space dimension 2D, and add physics Beam,...
View Articlehow to plot graph b/w preeure vs displacement
i need procedure how to plot grap for pressure sensor and how to observe pressure and displacement value......
View ArticleThermal expansion model
I built a thermal expansion model, at temperature 700K. I want to examine the stress distritubion of the cross-section inside the expanded sample, how do I do that? Also, is there a way to visualize...
View ArticleMaxwell Stress Tensor
Hello all, I'm new to Comsol and Im having a little difficulty getting my head around how the Maxwell Stress Tensor operates. I understand its operation when applied to parallel wires (Like in the...
View ArticleWhat is the method to calculate error?
I was fooling around with Comsol Multiphysics. I have found very interesting feature included in Comsol. Recently I was testing second harmonic generation module in it. The error is calculated and...
View ArticleImage to model, Image to material!!!
Hello everyone, Am trying to use an image function for an electrostatic problem. While trying to define the relative permitivity for the image i made use of analytical function as...
View ArticleFluid Compression
Hi, I built a simple model for fluid compression in 2D FSI model. A squre is build as fluid, and three sides of it are defined as wall, the other side in contacted with a PDMS membrane. There is a...
View Articledirection of current density and normal vector
Dear all, I have a question as regards the direction of the current density: I want to calculate the current density of an electrode which has the form of a cube. Obviously I have 6 planes with a...
View ArticleParticle tracking with freeze condition - how to not track frozen particles?
Hi all, I have a fairly simple model consisting of purely axial, laminar flow in a rectangular channel. These simulations are in the Stokes regime, and the flow is modeled as steady state. I would like...
View Article"Out of memory"
Hello, I have this system - a fiber optic cable glued on a concrete beam -, which I would like to calculate with Comsol. When I use a Finer mesh (which brings c.a. 96 000 elements) everything goes...
View ArticleElectrostatics using deformed result of solid mechanics
Hi, I am new to COMSOL, using version 4.1 to simulate a flexible capacitor. The goal is to have the geometry deformed using a Solid Mechanics simulation (which I have done) then simulate the behaviour...
View ArticlePlasticity - Cyclic Hardening
Hi all, I am modelling a process where a steel plate is subject to cyclic forces that cause plastic deformation. As the process is cyclic I am inclined to use the kinematic hardening option - I am...
View ArticleHow to calculate a value between two points?
Hello, I have modelled a simple 2D electric potential plot of a dielectric between two plates with a void in the middle. I want to know the voltage between across the void. I can get the plots on...
View ArticleCut Point 3D Point Evaluation
Hi there I am trying to obtain data for a point on my model that is not directly defined within the geometry. I have used the "Cut Point 3D" to add a point on my model, then I was going to use the...
View Articlecoupling Electric Currents and Magnetic Fields
Hi everyone! If a model consists of both electric currents (or electrostatics) and magnetic fields separately (not using MEF), how do you couple them to make possible the magnetic fields can be...
View Articlemodeling evanescent wave
Hi all, How to generate or simulate evanescent wave in COMSOL? can total internal reflection work? There seems to be rare examples in this field and expect for any ideas from you.
View ArticleScttering problem using comsol4.2
I wanted to calculate scattering absorption cross section and thereby extinction for a nanoparticle. I am not sure how to go for that in comsol4.2. Can anyone please tell a basic flow to accomplish...
View ArticleSessile droplet
I want to put a sessile droplet inside a channel. How to create a droplet of a specific material ? and how do I choose the model ? As a reference I was wondering about the model in one the Paper - A...
View ArticleSliding boundary conditions in Solid Mechanics
Hi! I am trying to model a sliding boundary condition between to elastic bodies. By sliding condition here I mean, that the DIFFERENCE between the displacement fileds should always be zero in the...
View ArticleMagnetic Force on an armature
Hello I'm dealing with a very simple problem that has been very frustrating for me! I would appreciate if any one can assist me with that. I'm modeling an E-shaped core in 2D magnetic field module. It...
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