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Victor
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You can make these settings in Analysis settings: Analysis type: Buckling Modes: 3 or whatever Shift point: 1 seems to be OK. It should be lower than the lowest buckling factor but not too many orders of magnitude lower or the error increases. Bewa…
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Mesh the plate and use contact with the CCX solver and Nonlinear Static 3D. If the plate is effectively rigid, you can use a very coarse mesh, like one huge element.
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Just a guess but your 3rd picture looks like it might be a symmetry boundary. Be aware that symmetry for DC current flow is the default when no boundary conditions are applied so maybe you can remove something from there??
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That happens when other constraints share the bonded contact's slave nodes. Those could be fixed electric potentials or other bonded contacts. A workaround is to extrude a thin layer from some surfaces and exclude the thin edge of that from one of t…
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There isn't a way to create a von Mises stress with the proper calculated values through a script without solving it again. You can add the Zienkiewicz-Zhu von Mises stress item to the outline tree with wrong values using solution.set_variable("zz…
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@jaros No non-commercial price anymore, sorry.
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@German It's according to Three-Dimensional Static and Dynamic Analysis of Structures A Physical Approach With Emphasis on Earthquake Engineering, 3rd edition, by Edward L. Wilson, Chapter 6. Incompatible elements.
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Not really. CalculiX has a 1-DOF spring (SPRING1 element) which you could define manually but that's probably even less convenient. You can create line elements by extruding from nodes, and could generate all 8 isolators together with 2 extrude ope…
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Not picking nodes in Mecway is because the OpenRadioss stresses/etc. are only on elements, not nodes. I intend to apply node averaging in Mecway so it has both.
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@Tao, I've heard of this same problem from one other person before. Did you experience it with previous versions too?
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I'm not able to reproduce this problem with a 262000 element model. Perhaps you could send it to me privately? That error message is supposed to show if you modify the node numbers near the top of the form to something that's invalid, like a non-ex…
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Other than Gmsh/Salome as Sergio suggested, since it's just a prismatic extrusion, you can do a surface mesh, delete all but one end surface, then extrude to a solid in Mecway. That will give you a hex-dominant mesh that's structured in one directio…
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@Fatmac Thanks for that Altair Study Guide. It's easier to read than the user guide and more helpful about recommended element options. The fixed format does take getting used to. But there's also a lot of consistency so it gets easier. Here's an …
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Hello Bruce The tube mesh you showed is likely too coarse being made from tet elements (automesher). Other ways to mesh it that will probably give better results and/or fewer nodes are: - Make a surface mesh then delete all except the inner or out…
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Previous versions would all co-exist by default but now (26+), it automatically uninstalls the old one (25+) retaining its settings and file associations. You can copy 25 to somewhere else before installing 26.
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@Sergio The void material (/MAT/LAW0) stays put on its own. Another way is /BCS for fixed displacement boundary conditions.
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Oh yes, OMP_NUM_THREADS for multithreading.
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You can do but I'd put them somewhere else then set their location as in your picture. If you change anything in the installation folder, it can get messy if you uninstall or update.
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Yes. You can do this: 1. Select the surface faces 2. Create a new node-surface coupling. The surface will automatically be assigned. 3. Select the reference node. 4. Edit the node-surface coupling. The selected node will be automatically assigned to…
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Here's a fixed one. The change is an added parameter for the C compiler to ignore errors. Thanks for discovering this problem. https://mecway.com/download/ccx_win64_mkl_pardiso_source_2.21_2.zip
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It looks like gcc 14.1 (released this year) breaks it by turning two warnings into errors: (-Werror=implicit-function-declaration and -Werror=implicit-int). I'm trying to find out how to force it to use gcc 13.3 or I might need to patch the code
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I'm getting the same problem. Still got to work it out but I suspect an update to gcc might have broken compatibility and needs some option to revert to the old behavior. This has happened before with gfortran and suddenly people everywhere couldn't…
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Oh sorry. That means the build failed and you need to look in [...]/x64/buildlog.txt which should have the relevant error messages near the bottom.
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My favorite way is compiling it with Mecway/ccx/ccx_win64_mkl_pardiso_source_2.21.zip which has a 5 step instruction procedure in it. Or you can: 1) download version 2.22 from dhondt.de 2) Install Intel OneAPI MKL 3) Copy everything from [...]/Int…
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You're quite right @Mishal I used that term a bit sloppily. Even a simple sin(theta)=theta pendulum won't work.
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Hello szicsa Mecway can't model general surface-to-surface convection or radiation so you would have to model it as an equivalent conduction through a layer of material. If you use the CCX solver, you can connect them with contact and define a the…
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You need to use the Nonlinear dynamic response 3D analysis type for this because of the large rotation. Just change that and set solver to CCX and it works. EDIT: Also add a Z constraint at the pivot for 3D. Pardiso can solve without that but Spool…
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Hello Vinicius_Petrucci. If I understand correctly, you can use contact with the unilateral option to allow sliding and separation. If you want sliding without allowing separation, maybe bonded contact with a near-zero tangential stiffness. It's OK…
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There isn't a general way to input a pressure field. Some alternatives: If the x,y,z values correspond to nodes or elements in the mesh, you could write a Python script or use a spreadsheet, perhaps with face node coordinates obtained from Solution…
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Yea it's a confusing word, also called bubble functions. I don't fully understand what it means but the "I" in C3D8I stands for incompatible too. So CCX has both types. I agree with the principle of just updating the formulation instead of adding a…
