Electric field not adjusting with moving mesh
Hi, I have created a model which is effectively a capacitor with a moving plate. I have ground electrodes on the fixed top plate and +/-100V electrodes on the bottom moving plate. I am using ALE with...
View ArticleSimple Contact Mechanics Problem
Hi All, I have been struggling a little with trying to implement a contact mechanics. I am modelling indentation of a hybrid polymer base layer in 2D. The polymer base layer is a combination of two...
View ArticleHow to couple pore water pressure to simulate triaxial test using Cam-clay model
Here are some questions I want to ask. Thanks! the figures are in doc file. Problem description: We want to simulate the behavior of soil sample from a trialxial test. The cam-clay model here is...
View Articlehow to set the domain temperature?
In heat transfer in solid model I need to set the domain temperature as a constant value(such as T=300K) In all the computing process. Now I can only set the boundary temperature.Thanks.
View Articlehow to set the domain temperature?
In heat transfer in solid model I need to set the domain temperature as a constant value(such as T=300K) In all the computing process. Now I can only set the boundary temperature.Thanks.
View ArticleAC Electrical Field simulation in interdigit structure
hi I want to do AC filed simulation for interdigit structure. I am wondering what kind of physics should I select and how I can apply AC signal to my structure? I would appreciate any help
View ArticleDefine simple-support boundary condition of a beam (Solid Mechanics)
Hello everyone, I am a new Comsol user and through the past few months I have made simple models comparing the results with some theoretical models. I will bother you with plenty of questions the next...
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 Articlejpeg to dxf
Hello everyone, I am trying to import an image in to my model however i am not clear on how to convert the .jpeg to .dxf, i tried a few online softwares but of no use. May your expertise assist me....
View ArticleOptical Metals
Hi, Does anyone know how to simulate Drude or Loretzian type of metal (gold, silver in Optical frequencies) to see the eigen frequency analysis on plasmonic waveguides... thanks, Asanka.
View ArticleAsynchronous Machine time dependent startup, singularity error
Hello, I am trying to simulate a ASM in the rotating machines physics, time dependent. The Stator slots are coupled to the electrical circuit physics for a Voltage excitation The rotor slots are also...
View ArticleHow to save deformed geometry so that it can be used as new initial geometry...
Hi. I am looking the ways to save the deformed geometry at the end of analysis, and i would like to use it as a completely new initial geometry for further analysis, by clearing out the previous...
View ArticleCylindrical anisotropic stiffness
Hi, Problem: Imagine a cylindrical shell, with a certain wall thickness. The material properties of the shell have an isotropic density (rho) and an anisotropic stiffness described by a constant radial...
View ArticleRF: Emitting planar light from PORT (3D)
Hello my friends. I am trying to construct a model where the port is placed along the y,z-axis and emits light in the x-direction. However, I do not want to just emit light normal to port's surface, ie...
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 ArticleAdding a weak contribution to a fluid domain
Hello, Can anyone please help me to add a modified continuity equation in fluid domain, I came to understand that by adding a weak contribution node, it is possible to modify equations.....Has someone...
View Articlewhich kind of solver?
Hi all, i am doing some kind of simulation in RF using 4.3 version comsol and the RAM of my computer is about 30G , how to select the best solver to use almost of my RAM to finish the task as faster as...
View Articleanalytic function in another analytic function
Hi, I have two questions: 1. an analytic cunction that has one argument - sigmaxx that I want to incorperate in another analytic function that has another argument = ec.normE. I cant do it no matter...
View Articleopen .mat file in comsol
Hi all, I got couple of files which are in version of 3.5a, and the file extensions are .fl and .mat. I can open .fl through comsol, but I don't know how to open .mat in comsol, which can be opened...
View ArticleAssembly (Identity Pairs + Continuity) and Compose Geometry (/Union): Do they...
Dear all, I am trying a simple example to better understand the Assembly mode. The example is a multilayer (3 layers), where only the layer 2 is at high temperature (so it expands and "pull" the other...
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