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You are in the right direction. I can barely express how much light a simple cube can bring on this subject. -First let me tell you I like to express imposed displacements as it’s equivalent Stretch. Stretch do not depend on the Strain framework, a…
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There is another source of discrepancy when looking at the "reaction forces". When the applied force is distributed (like gravity), part of the force ends up at the constrained nodes and it is deduced when evaluated. Reaction force = Sum of all Ex…
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Is Shech asking for a CFD?."Internal 2D problem". I don't understand well the question. "Flow field" and thermal field can be transient with pipe element if that what is asked for.
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Forced convection ......Wasn't this what was introduced in v19? It should work with shells too ¿right? https://mecway.com/forum/discussion/comment/6917#Comment_6917
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I see . There are many details to consider. Thanks both, @FERNANDO When concrete cracks, it stops supporting traction. Yep. I have noticed on the calculation report. There is a completely different Young modulus before and after Mcr. @MikeMc…
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Hi, I have some progress. I can now predict the failure point (in a Brazilian test for example) and it agrees well once the results are represented into the Mohr Coulomb Diagram. (Failure=Circle touch the line).The problem is that the expected fail…
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First, I'm mapping all those material properties involved in a report into ccx material properties. Compression_only material has two constants, apart from density,.... *USER MATERIAL,CONSTANTS=2 **• E. - ----Ec28 According to EC2 Below Mc…
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Hi Mike, I have read that your formula refers to what EC2 calls fctm and it’s a mean value for tensile strength. fctm [MPa] = 0.30⋅fck^2/3 and it is valid for a range of concrete class ≤ C50/60 fctm [MPa] = 2.12⋅ln[1+(fcm / 10 MPa)] for concrete c…
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Hi, I ‘m working to get that concrete beam reference file for MECWAY/CCX. Segio suggestion is too intimidating for me to start with concrete, so I’m starting with a simpler example. It is based on an EC2 calculation of a simply_supported T cross se…
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Great, Are you using the old portable version of MFRONT or the new published?
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Oficial ccx_dynamic.exe ver 2.21 as your ccx solver. http://www.dhondt.de/calculix_2.21_4win.zip @Sergio Most of the available material models I have tested doesn't or provide nonsense results. Each material behavior .mfront need the user revisio…
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Well, That's some progress. Could you push on the Details button and post to see what’s the problem.?
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Have you set up ccx_dynamic.exe ver 2.21 as your ccx solver.? It should look like this.
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Hi Fernando, Rafal.brzegowy will try to compile a new portable version by the end of this week. Let's see if that helps. Mean time you could try the old portable one. It works for me, at least for the most basic material models. Just put all those…
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Strange it worked before. This is like a press and typically works better solved imposing displacement.
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How did you install the Library.? What's the error message?
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Hi Fernando, Do you have some realistic parameters for a standard concrete.? Let's Say HM-25 I can't find information about : **• Dilation angle ψ in degrees and the relationsheep between **• Cohesion yield stress and its Equivalent plastic st…
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Now I have remembered I already made a test example with Mohr Coulomb but it is related to Soil Stability. It is a copy paste based on a You tube video and I did not found too much application to my working area so I didn't go more in deep.
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I'm not civil engineer and don't have experience with concrete, but if anyone else is up for it, I'm in. I can try to apply this Mohr Coulomb to my previous file as I know is converging fast. Later we could try; 1.2. Reinforced Concrete Beam or …
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Be careful if you are using: PASTIX_MIXED_PRECISION = 1 It can speed up the analysis but there has been reported some issues.
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I assume that this option allows using multiple processors For running multprocessor, create new Windows System Variables with settings: OMP_NUM_THREADS=6 CCX_NPROC_STIFFNESS=6 Using more than 6-8 proc for most models will not reduce run time f…
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Hi Fernando and welcome, Ccx manual says that for those models “In essence, a one-dimensional Hooke-type relationship is established between the principal stresses and principal strains.” So, the Only tension and Only compression materials models i…
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By other hand. If you still do not have clear the material model for the rope I would do the tests on a much simple and smaller model. Without rotations. Tensile test.
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"Project nodes into cylinder tool is way above my league" It's a Mecway meshing tool (Project onto surface). The idea is to prepare both surface's nodes accurately following a desired shape. You have available a cylinder similar with your scenari…
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First is to make the contact work. Contact problems between curved surfaces require a good initial node position. I would recommend you to start with finer mesh on the belt and use the project nodes into cylinder tool to adjust the positions to a c…
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Hi Fatigue_Pro. Cool. May I ask you something? I have seen your webpage and results comparison between ccx and Mecway Internal. I have never seen the first eigenfrequency to be higher than the second. Is that possible.? By the way, Merry Christma…
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end release beams (Internal solver only) https://mecway.com/forum/discussion/comment/5532#Comment_5532 NOTE: You need to Show Element Surface to apply it.
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Tanks Victor, Not sure how you did that, but I had a demonic file with some Rigid elements linked like a chain that now is converging. ¿?¿ Mecway is more robust every day. Tanks also for the edge detection on shells.
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Mecway also allows to extrude points into beams. That could be usefull to you.
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Maybe related with this issue. Same Model but one is set up in mmgs and the other in MKs. frd result for MKS is 7 times bigger. Another important difference is that MKS triggers mass scaling while mmgs not. I know this is a ccx bug not Mecway but …
