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HI, This is OPTION 3 using the rectangular coordinate sistem (as MECWAY likes) that seems to work too. I’m using a *TRANSFORM TYPE=R (rectangular) custom made and built directly from the beam direction. For direction (1,1,1) it is (-1,1,0) I woul…
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¿Is it still possible to switch between Paradiso and Pastix? I experienced issues with mixed precision and nonlinear analysis too. I compiled the MKL Pardiso with out of core provided within the ccx folder in the last Mecway distribution and I don't…
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Sure.
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Here you can see why it was not working. Connection between a beam and a shell is rigid although they both have rotational degrees of freedom. When connected to the through thickness shell side , it don’t allow that section to rotate properly during…
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Hi cwharpe, Good news for your Dandelion. If you use Springs instead of beams , the square plate with hole delivers exactly the same result as Rigid body. The picture shows Node Surface Coupling RIGID against Dandelion using Beams , using Trus…
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Hi cwharpe, Sergio Well done and thanks for sharing!!. I can see you managed to find the way to get it work. As these spiders are new to me , I have been doing some readings and tests and if I understood it correctly literature differentiate betwe…
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Thank you very much Manuel !! , That’s the first approach to seismic analysis in the time domain I see with Mecway and could be very useful to me too. ¿May I ask you some questions if you don’t mind? -¿Is this method able to capture any possible…
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Hi, Cwharpe, Not sure if this is the same as a spider beam (new to me) but If it is, it could be done "easily" and maybe could be translated into your API function. Unfortunately, I’m very bad programing and I can’t help in that sense. It is based…
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Hi, Victor, I think I see what happens. You fixed the custom refinement adding a merge operation as some of the middle nodes disconnect in previous versions. Now , when merging, there is this particular case when two elements that are going to be r…
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Running the model just opened the plates separate as they are not attached in any means. After a Custom refinement 2,2,1, the nodes between plates are merged and the solution gives cero displacement . Additionally, internal solver shows a warning.:…
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Hi dperk492, I think there is no tolerance adjustment parameter to adjust convergence. ¿Could you post the file or a simplified version to see if we can help? I have found the compression only support can be difficult sometimes.
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HI Tim, Select the lip nodes, change the selection to edges, and extrude as usual but just one subdivision. Then collapse (*) this short shell ring. (*)Collapse means to reduce the element dimension by one. Volume to shell, shell to line or line …
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Thanks Sergio. I would say it's new. ccx beams where just the rectangular shape isn't it. Hallow tube doesn't work to me for this particular model.
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Thanks Manuel. @Victor, this version has internal solver and all the same elements as the original file but for some reason I can't see, it doesn't work on the full bolt model. I fixed the problem why the internal solver didn’t work. The projectio…
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Hi, Victor, The internal solver can set up a bonded contact between a beam and a solid or a beam and a Shell at an intermediate node, the same as we have in this bolt. See file. I think the main issue is that pretension, forces to convert the beam …
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There are two options available in Calculix. 7.129 *UNCOUPLED TEMPERATURE-DISPLACEMENT step - thermal and mechanical analyses are solved sequentially - thermal simulation is followed by mechanical one in each increment and thus there’s no feedba…
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Good morning , I have set up a test to check the Cavity tool performance. There are four increasing in size concentric spheres with a heat source BC in the core. R=1 m, R=2 m, R=4 m, R=8m I have stablished radiation with emissivity=1 + Cavity chec…
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Hi dculp, I would rotate the whole model 180º.
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@cwarpe Looks great! @Nordlicht Your chute looks symmetric. If your box is a rectangle, you could apply symmetry and you only need to model one corner.
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The file with quadratic elements (>1000 nodes) looks much better.
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Hi, I normally don’t stiff from the inside (except for the trays on distillation columns as they are the stiffener and the tray support at the same time) In my applications there would be product accumulated on top of the stiffener and it is not ok…
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Sure, As the question was not in the improvement-suggestions area I thought you were looking how to sort it out. By the way, some transparency would help too.
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Hi Lriga, There is no "hide elements" button. If the faces are aligned with the XYZ maybe, you could expose them using the slice bar. Then you can select and create a surface selection for easy access in the future. If they are not aligned with XY…
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Hi Victor, Now you left me with little confidence too. ¿Do you remember what was wrong or did not give you the expected results? ¿Was it related with temperatures, heat fluxes, area of incluence, convergence issues...?
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OOh.Wait!! Maybe I'm falling myself into point 4. Now I see. The Source surface is in balance. All the heat is generated and radiated in the same point, and I can only see the Overall Heat Flux. I did not finished the shell analysis to realize tha…
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Hi Victor and thanks, 1-Find attached the shell version I started to work with. Radiation on the source surface drops from the correct value 64MW/m2 to 8MW/m2.4e-8MW EDITED: Sorry, 8MW/m2 is the value on the Tests bars. Radiation on the source su…
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You are welcome, Right, I normally work with cylindrical shells, so the end tips end connected without effort. In your case, if you are working with flat shapes or chutes like the ones used in mining for example, the sweep technique will be better …
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Thin and low E linear truss elements work perfect to follow the change in the perimeter length. Merge with the desired perimeter to control. Stresses (which can be tabulated) should be directly proportional to the change in length of each individua…
