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HI, ¿Does anybody know how to keep the cmd window open at the end of the meshing process so one can review any warning and the abstract ? Thanks
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Your comparison between merging the nodes and the elastic contact has convinced me. Once the stresses arising by an unproper selection of master and slave are removed , the stresses due to different material properties are totally real. Thanks Vic…
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The first picture of the post is an example. Tie and Elastic with high tangential stiffness might warranty the bodies keep together but it can make some stresses to arise at the contact area. Displacements continuities are usually ok. *SURFACE BE…
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HI Victor, I would like to be able to set up the *SURFACE BEHAVIOR,PRESSURE-OVERCLOSURE=TIED + the value of the tangential stifness (even remove it). I have not found other option than OVERCLOSURE=LINEAR + automatic tangential stifness but it is to…
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Hi cwharpe, For me, MECWAY + topic directly in Google works better than the search bar inside the forum.
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Thanks Victor, I think selecting SI(mm) as unit system could extend the range of values that work well.
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Oh, so you have the custom palette already in use as default. mhh
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I propose to store the inverted scheme in the Custom Colors. Last option below ....., Red-Blue, Grey Scale. This doesn't mean it has to be the default. You can keep the Rainbow as usual and switch to custom depending on your needs. I have created a …
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Hi, You are progressing very fast. Be careful. There is a very common mistake. You have applied a TOTAL vertical force of -2.5KN to a “Set of 4 nodes”. That means each node gets -2.5Kn/4 = -0.625 kN. If you want -2.5KN on each node you need to …
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Hi dculp, There is a way to do this. My first response was probably too precipitated as sorted the problem immediately but for a more permanent solution you could create a custom color legend and save it inside the default model folder to be loaded…
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Hi LHartley, A must sanity check is to verify that the action/reaction principle is fulfilled. To check this, create a new named selection for the nodes of interest (I named them Reaction_Force) , recalculate, and then go to Solution/Sum menu to ex…
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First step - will change the rotation of the L members but I have another question. Should I set it to 0 or 90? Angle normally would be +/-45º , +/-135º. It aligns the flanges with the Cartesian planes. If you show the beam thickness you can see …
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Hi LHartley , -You have all the members specified as truss; columns included. ¿Is that ok with you? -L members have their V axis naturally rotated 45 degrees. That makes you are losing strength capacity of the members and it will be difficult to …
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The offset card allows to build custom beams in ccx extending considerably the available sections. I have tested with a custom build IPE160 but I don’t really think it is worth the effort unless one builds a library or needs a specific custom profil…
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Hi, I must correct my previous post. There is a way to offset beams when using the ccx solver and adjust stiffeners positions. I requires custom cards but it is not complex. First go to the Element Properties in the Mesh Tools menu and set the pr…
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Confronting ideas politely is always worth. I would like to use the result of this discussion as example to encourage more users to participate in the forum. The fruits are already beginning to be seen. Eight revolutions in Total CalculiX Time: 16.6…
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Thanks Victor, I’m working on that old problem with pure shells and large rigid body rotations, and I have already identified two issues. The first is related with the shell losing its axis of rotation. That’s fixed and was caused by a wrong unders…
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Hi, Now that we have this wonderful shell elements and that their usage will probably be extended more and more, would be nice if the edge detecting selection tool could be extended also to the shell faces as it works on solids. Not sure if it was …
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Hi, After a long debate, Victor has helped me to identify the origin of the discrepancy between my results and MECWAY. It has turned out that the starting hypotheses in the statement of my post was wrong. Precisely the one "displacement of 1mm in …
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That’s really impressive. Beauuuuuutiful mesh. I am a big fan of manual meshing and MECWAY is very strong in this sense. Congratulations to you and of course Victor for the new release. We have a gem on our hands.
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@Victor "Oh, I see what you mean now about "if I eliminate the Orientation card in the three my custom model fails". That's because the custom CCX cards refer to an ELSET (element_orientation_elements) that the orientation card creates" The Orien…
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I would better like to find the way to impose an arbitrary displacement on beams without having to decompose the vector. I guess now the question is ¿why it works when it is imposed only in one cartesian coordinate without showing let’s call it free…
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Hi, Victor and Thanks for your reply, Thats ok for 1 Beam but we couldn't solve the attached file as it would over constrain the model. The most general case is important as it involves dandelions (spiders). I think my method could solve it corre…
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Hi, The Coordinate system shown in Figure 153 has been removed from the ccx Manual 2.20. I think it is not said but the vector from beam to b point must be orthogonal to the beam and pass through the point a. I have tried other combinations that re…
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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…
