Contact problem. Static vs Dynamic
I have an impact model; steel presses down soft tissue. I can solve this model in static analysis with prescribed displacement. But when I solved the model in dynamic analysis with prescribed velocity,...
View ArticleImpulse Response of a simple structure
Hi everyone, I would like to simulate a simple structure under the action of an impulsive force. The structure is a free-clamped cantilever, where the impulse force is applied at the free end. The...
View ArticleFrequency-Domain, Perturbation
Dear all, I'm simulating impedance spectra on a newman type lithium ion battery model. I use one single solver Step: Frequency-Domain, Perturbation. There is one single "Electrode Current Densitiy"...
View ArticleResonant frequency +set stress and temperature
How way I will find resonant frequency my structure? I use to Structural mechanic modul, then Solid mechanics and then Frequency domain-Modal or Eigenfrequency? I need to specify these parameters:...
View ArticleLight Propagation in Tissue
i just want to simulate the propagation of monochromatic light (800nm) in a 3 Layer tissue model 3D. Does anyone know a working Comsol solution? Problem: to many elements with this wavelength. Setup: 3...
View ArticleMoving mesh problem with two concentric circles (Li-ion)
Hello, I am using Comsol Multiphysics 3.5a. I am modeling a problem involving three models, Solid Stress-Strain (including thermal expansion), PDE General Form and Moving Mesh (ALE). My geometry (2D)...
View ArticleInduction Heating efficiency
Hi, is it there any way to calculate the efficiency of an induction heating process using comsols?
View Articlefrom 3.5 to 4.0 or later">"Integration coubling variable" -> from 3.5 to 4.0 or later
Hi, In COMSOL 3.5 or earlier, for "Integration coubling variable", one could go to option -> Integration coubling variable -> subdomain/boundary/ point variable. Can anyone tell me how can I do...
View ArticleHow to simulate particles trajectory under dielectrophoretic force
Hi all, Now I'm trying to trace the particles under dielectrophoresis(DEP) and laminar flow. I could apply DC but I can't apply AC. I can't make correlation among AC, laminar flow and dielectric force...
View Articlesetting mass flow rate at inlet
Hi, Model description I have a 3D laminar air flow inside channel whose cross section is rectangle. for BC , 1- the inlet , mass flow rate boundary is set (kg/s), 2- the outlet , zero pressure p=0 pa...
View Articleprescribed displacement with time dependant study
I am having trouble with my model, so now I have a really simple test file to find the problem. There is a block and it moves 1mm with prescribed displacement during 0.1ms. The results show me that...
View ArticleResonant Transducer Damping with Acoustic Load
Hello, I am trying to understand the effect of mechanical load on the resonant characteristics of a piezoelectric transducer. For that I basically take a rod of PZT-5H. I applied a voltage difference...
View ArticleTime dependent alternating temperature/thermal insulation boundary conditions
Hi all, I am trying to setup alternating boundary conditions for a certain boundary based on the hours of each day. My model will run for about 2 months, and I would like to set the boundary condition...
View Articletransport of dilute species
I am trying to have solute transfer in a flowing fluid only due to convection and not diffusion. If I put diffusivity to be very low, no transfer occurs at all and the concentration of solute is seen...
View ArticlePCB w/ Components simulation
Can i take my PCB w/ all the components and simulate in Comsol? My PCB is simple PCB generaly w/ Fet driver that drives a PCB planner coil
View ArticleA question about the correct boundary conditions
Hi I'm currently modeling a microwave oven. Inside the chamber is a titanium cylinder, surrounded by a susceptor in zinc oxyde. All of this is surounded by a stationary TE10 wave. I was wondering what...
View ArticleHow to solve and verify a ODE equation?
How to solve a ODE equation with mathematical problem? And how can I verify the result correct with the mathematical answer? Thanks for help.
View ArticleHow to transfer temperature plot data in excel sheet
Hi, I have a contour temperature plot and its data (i.e. contour temperature plot ) would like to transfer in excel sheet. Can anyone tell me how can i transfer data in excel sheet. Thanks in advanced....
View ArticleRed arrows
Hello. When the output reports can also use the source arrow, arrows will appear. Can anyone explain what these arrows have physical meaning and what can be used in the calculations? Thank.
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