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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 …
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¿Why is beta damping not working? I’m slowly understanding better how explicit works. High frequency excitations are controlled through a different parameter on the dynamic card. it's time to give the ball a good kick.
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Hi Victor, I’m in love with those integrals added to the Solution tree. One can track Position of the center of mass, overall Kinetic and Potential energy balance,... I think we could even compute the probability of failure for brittle materials (W…
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Drag a nearby element node to Merge with new Hole Ctr., then run Hole Tool. Oh, I like that. !! Thanks
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Hi, I have done some test on the new tool features based on a given reference (*) and deviation has end up below 0.17%. (Even better than the Ansys reference) Things found on the test: 1-I can't change the SCL direction. Even switching the poin…
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Thank you Victor. Lots of new thinghs.
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I think I don't have other option now. Thank you Sergio.
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Not really but it’s easy to understand. My model is considerably pre-heated before operation. Once heated, It is intended to work on that temperature range it’s whole life. The expansion process is controlled as much as possible with lateral guides…
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It is more a release than a return to the initial position.
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Hi Sergio , Mainly change BC. Can’t find the way to introduce OP=NEW inside the same step.
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Custom model definition gets put immediately before the first automatically generated *STEP section I think that's the issue. *RESTART,READ must be at the very beginning of the inp itself not the *step block. didn't even know that it would be a …
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I got it. and it worked.!! I will request it also as a future feature in the github. I will explain the motivation. Thanks Victor.
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HI Mishal, What about applying some pressure on the outer surface of the truss. (Time dependent pressure).? If you set up the truss material as incompressible the beam will not have other option that elongate or shorten to preserve the volume depen…
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HI, pberry “I tried changing the analysis type from Nonlinear Static 3D to Static 3D” You are still in nonlinear analysis. Static GUI but NLGEOM=ON triggered by contact or some material nonlinearity. Check all contacts are bonded Elastic or better…
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Hi adg, Are you sure your problem has Steady State Solution? There is no initial temperature in Steady State ¿isn't it?. By other hand 0 @ 0°C . mmmmmh Could you try 0.0001 @ 0°C or -400 @ -200°C . Regards
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ccx Manual says classical von Mises-Huber yield condition applies. This condition is evaluated at the integration points. s.xx are also below 200MPa there. Plasticity is better captured with solid elements. https://calculix.discourse.group/t/elas…
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¿Do you have any complex custom formula in the solution tree?
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If you look at the beam integration points you will find that VM Stress is below the yield point. Node values are extrapolated and are not accurate enought for the element/mesh selection. stresses (elem, integ.pnt.,sxx,syy,szz,sxy,sxz,syz) for set…
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Thank you, Victor , I have calculated the first expected oscillating period by hand. I have found the same formula in at least 3 different sources, and they all agree. For a cylindrical shaped tank, Diameter=20m and depth H=25m, the expected first …
