Maximum deformation expression
I want to apply inequality constraints for optimization module that max deformation of component is smaller than 1mm.So I need expression for max deformation.How can I express that?
View ArticleAcceleration time history data for seismic analysis
Hi all,Can somebody explain how to apply acceleration time history load for seismic analysis of buildings?
View ArticleBuried pipeline (Beam embedded in solid)
Hi,I am trying to model a pipeline buried in sand. Elastic properties of the sand is assumed.I was able to do this succesfully using shell-solid as shown in the attached file "Buried pipe...
View ArticleInterface font size
Dear all,Is it possible to increase the font size of the interface on screen (I am using a MacOS)? The default is very small...Thank you Francesca
View ArticleUnknown Variable Error in a Multi-physics Model
Hi,I have defined the Young's modulus as a piece wise function in the global variables. (Function name pw1 and Argument p). But when it is called for, under the Linear Elastic Material node of the...
View ArticleHow to create uneven surfaces?
I want to draw a kind of cube, with the top face with the topography and different internal layers that divide the cube into the different rock layers of the subsoil. I have already placed the...
View ArticleError in the number of arguments in the analytic functions
I am trying to model the heat transfer through a laser cavity by a pulsed pump laser with arguments in both space (r) and time (t). I have set up my analytic functions with both arguments defined and...
View ArticleCoupling of two physics
Hi I made two models seperately and then assembled them. First model uses "Coefficient form PDE" and second model uses "particle tracing module and Electrostatics module". I want to couple them such...
View ArticleFerrofluid concentration gradient
Hi I am trying to simulate the concentration gradient of ferrofluid in a microfluidic channel. but I can't find the material in the library.. is there anyone know how to choose the material ?thank you :)
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Simple Electric current simulation (Capacitor)
Hello Everybody.I want to model a capacitor inside of near vacuum chamber, two electrode with one side of high voltage and the other side with ground. In between the plate, there are vapor (low...
View Articledefine the attribute of material
i am a noviciate of comsol, i want to define the variable refractivity of material to simulate the reflentance with the wave optics. the refractivity was defined by interpolation function, but it meet...
View Articlephase change of powder-liquid-solide
Hello everyone! I'm trying to model the laser melting in the additive manufacturing which means I must have the correct phase change in the system. I want to model phase change of powder-liquid-solid...
View ArticleFinding total volume affected by certain temperature value in time dependent...
Hi,I am trying to determine the total volume using intop1(T>myvlaue). But it gives the volume at each time step. But I want sum of total volume affected at all times steps together. any suugstion?
View ArticleSave solution after cancelation
Hello, I want to ask, if there is a way to get and save the solution when I cancel/abort the simulation by myself. Thanks in advance for your help.Greetings, Kant
View ArticleForce&Torque Analysis Between Permanent Magnets and Motion Simulation
Hello colleagues.I work with magnetic field based robotic system and currently using COMSOL for magnetic field simulation regarding permanent magnet and coils. Now I am looking for sort of advanced...
View ArticleTangential stress
I'm solving a 2d analysis of a tunnel. How can i import cylindrical coordinates in to the analysis?How can i find out the tangential stress on the annulus in postprocessing?
View ArticleExcluding Interior of Domain in Induction Heating Simulation
Hello,I recently came across the tutorial called "Iron Sphere in a 13.56 MHz Magnetic Field" (https://www.comsol.com/model/iron-sphere-in-a-13-56-mhz-magnetic-field-12835) and it was quite useful it as...
View ArticleTotal volume affected by Some temperature value in transient thermal analysis
I am solving a transient thermal model and need to find the total volume affected by certain temperature value. when I am using volume integral operator intop1(T>myvalue). it gives me a table of...
View ArticleMolecule dipole
Hi I am doing a simulation on molecule dipole transport in a charged tissue. I am very confused by how to model a molecule dipole in comsol. Is there anyone who have suggestions? Thanks.
View ArticleProblems with time-dependent on 3D coils
Good afternoon,I'm trying to study the time-dependent on 3D coils, through the example "Magnetic Field of Helmholtz Coil", in order to observe the inductance in one of the coils through the other....
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