Modeling elastic waves in a solid mechanics study
Hi, I'd like to ask a question concerning the modeling of elastic waves in the structural mechanics module. The geometry is a simple 3D beam, free on all sides. (file attached) My goal is to study the...
View ArticleHow to set properties for material.
I simulated the insulator model in 2D-axial symmetric in AC/DC Module. i use com sol 4.3. i have some doubts related to that. How to set (or) apply a switch threshold value for particular (my model)...
View ArticleApproximation curve by an exponential
Hello, I would like to know if it's possible to approximate a curve by an exponential one determine and plot it on Comsol. Thks
View ArticleFrequency Domain Calculation regarding a thin steel plate with piezos
Hello, I did some eigenfrequency simulations regarding a thin steel plate with two piezos attached. (PiezoA and PiezoDUT) I placed the piezos at the maximums of a mode shape at about 122Hz. For the...
View ArticleInput Port Excitation Power for 2D RF Simulation
Hello, I'm having difficulty understanding exactly what the input power is for the port in the RF module in COMSOL 4.3. The unit is declared as watt, but unless there's some predefined thickness, the...
View ArticleUsing a Probe Value for a Stop Condition
Hello fellow COMSOL users. Can someone refer me to a model or tell me how to solve my problem. In a system undergoing resistive heating I want to use the calculated resistive energy as the stop...
View ArticleOblique incidence and floquet condition problem
In the RF module, I found that there are 2 problems. First, When the thickness of the layer which uses scattering boundary condition gets thin (below ~200nm), the direction of power flow...
View ArticleSimulation of Dielectrophoresis(DEP)
Hi there. I am a COMSOL v4.2a new user. May I know how to generate DEP effect with this software? Thanks Regards Laura
View ArticleApplying a torque to a shaft in version 4.2 class kit.
I am a college student using the 4.2 class kit. i am trying to apply a torque to one end of a shaft with the other end fixed.I tried using two point loads as a couple at one end but the stress readings...
View ArticleModel couplings as inputs to functions
Hello All, I am trying to put in a temperature average over a boundary into an analytical function. This isn't working and is producing an error. I was wondering whether anyone would have any...
View Articleconversion of given simulation in to 4.0a or lower version COMSOL
Dear all, I will be very much thankful if you solve given simulation into lower version COMSOL (4.0a or lower). Please find attached COMSOL file.. Thanking You
View ArticleStress simulation in electromagnets
Hi Comsol-Community, since quite some time I am trying to simulate high field electromagnets with Comsol 4.3. When it comes to simpe field calculations of (mostly) 2D-axisymm. coil magnets everything...
View ArticleGenerate report with 4.1
I am wondering how to generate a detailed report like the one below in Comsol 4.1.resource.npl.co.uk/docs/scienc...symmetric/microdisk_report.pdf Couldn't find anything comparable in the documentation.
View ArticleCoil inductance and resistance vs frequency
Hi, With the ACDC module of Comsol, I would like to calculate the standard parameters of air coil by taking into account frequency effect (inductance, resistance and capacitance of the coil) I would...
View Articlehow to plot the velocity profile between any two points in Comsol 4.2
In comsol 3.5, when I want to get the velocity profile from (0,0) to (0,4), I could use postprocessing--> cross section plot parameters --> line plot, then I can input cross section line data....
View ArticleAbout optical force calculation of particles manipulated by microring resonator
Hi,everyone. I want to simulate a structure which includes two bus waveguides and one microring resonator to form an on-chip optical tweezer. One microparticle is placed in the gap area between one...
View ArticleDiffraction Pattern
Hello, This is probably a very simple question. In the diffraction patterns example in the model library, how can I extract the amplitudes (or the intensity)? Many thanks Hamid
View Articlecomplex current density
Hi all, I'm working on getting the frequency dependent conductance and susceptance (real and imaginary admittance) of a simple resonating PZT block using the Piezoelectric Devices physics. I seem to be...
View ArticleMultiple physics with same dependent variable
I am working on a model with multiple physics, Electrostatics and Poisson's Equation and the dependent variable in both physics is Electric Potential. How do I set both the dependent variables using...
View ArticleModelling Compression of Material at a Rate
Hello, I am a beginner to COMSOL 4.2a and I would like to build a simple model where a material (a cylindrical block of polymer) is compressed at a rate of 10 mm/min. Using Solid Mechanics, I was able...
View Article
