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Rigid connector equivalent in 4.2a
Good day i am using version 4.2a but the tutorial i am using is for 4.3 and it says to find a rigid connector in solid mechanics. I need to apply a torque to a fillet bar,what is the equivalent function?.
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Sliding 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...
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Difference Between Fixed Constraint and Rigid Connector .
Whats the difference between fixed constraint and rigid connector ?? I'm trying to simulate a Frequency Response Analysis on a Aluminum Box that has a 'shaker' on it's lid and the lid is fixed to an...
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PML for infinite layered films
Dear folks, I am trying to simulate a point source illuminating on a stacked films extending to infinite. A intuitive way to truncate the film, I think, is to use PML. However, when extending the...
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How to display "Cut Point 3D" data sets?
Hi there, I want to simulate and visualize discrete measurement points which I import from another application as distinguished "Point" objects in the geometry of my 3D-model. So far I've created a...
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Modulated sinusoidal excitation
Hi everybody, I have to simulate a piezo transducer. The excitation of ceramics is a modulated sinusoidal excitation with an amplitude of 110V. In Piezdoelectric Devices module, I just can set a...
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External U vs. I
Hello, I'm quite new to COMSOL. I generally have doubts where to use external U vs. I or external I vs. U when I want to insert my designed model into a circuit. I think in any of those cases I have to...
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hill plasticity
Hi, Trying to make hill plasticity non-symmetric so my question is; is it possible with different yield stress level in tension and compression. Then in addition the plastic stage is confusion. How are...
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Mesh continuity at boundaries
Hello, I'm starting with Comsol, and I have this question, that may sound really basic to many of you. I have defined a contact pair between two parts of my geometry - an assembly. Now I would like to...
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Modeling a complex structure
The structure I'm modeling is very complex. it's a double layer structure with one wrapped outside the other. The structure is on nanoscale, so the mesh has to be really really fine. Due to the...
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minimum time value under condition
Hi I have a problem on my simulation I have a time dependent simulation and I want to get the minimum time value when a phenomena occur ( The voltage V raise a value above a certain threshlod) I want...
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Plotting the mesh of a cut plane through a 3D model
Hey guys, So i am currently doing some simulation involving parallel plate capacitors and i just want to see the difference between the meshes outside and within the capacitor. I've tried to create a...
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magnetic field gradient in 3D return zero!
Hi everybody If anybody knows that why the gradient of magnetic field in 3D models is always zero? I checked the different methods. for example I wrote d(Bx,x) or different component of B and H. Even...
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[Batch Run on Linux Cluster Problem]
Hello, I am currently trying to run COMSOL/4.3a in batch mode on our university cluster. I am able to submit the job and pull it back after computation. However, although the size of the *.mph has...
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How to 'fill' the space between two parametric curves.
Good morning, I'm trying to make an S shape drawing to my model that consists in two rectangles and 4 parametric curves ( forming 2 semi-circles). But when I make the extrusion the parametric part of...
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solution does not converge when using more intensive mesh
Dear: I am making a 2d model about laminar flow around a plane. When I use better mesh, the solution does not converge. It works quite well using not so intensive mesh. Can anybody explain this to me...
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Excavation process - time dependent
Hi, I am trying to model a real-time excavation of a borehole. Assuming that at the time t = 0, the drilling begins and at time t = 1 day, the tunnel advancement is 1 m (drilling velocity = 1m/day)....
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How to make sure AC/DC and Structural models are coupled? SIMULATION ATTACHED
I'm doing my thesis on the magneto-mechanical coupled analysis. The attached file is only a simple example showing what I want to do about magneto-mechanical coupling. I chose to use the AC/DC model,...
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Rigid connector equivalent in 4.2a
Good day i am using version 4.2a but the tutorial i am using is for 4.3 and it says to find a rigid connector in solid mechanics. I need to apply a torque to a fillet bar,what is the equivalent function?.
View ArticleClik here to view.
Sliding 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 Article