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JohnM
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Build your fine submodel in the same space as the coarse model, then delete all so that the only thing you have in the Mecway database is the fine mesh model and a node set called cutb. Add CCX custom stuff below. You will also need to set the Mecw…
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MESHING STAMPINGS/SHEET METAL Parts with a single thickness (like sheet metal) can be meshed with hex solids by first meshing quad shells, selecting one surface, and extruding through thickness. These models are usually smaller and better quality. E…
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I have heard your exact comments from other forum users, that's why I started this thread! Here are two slides from some old group notes using GrabCAD examples. It would be great to understand what I don't know about Netgen. I have found Salome to…
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Your c3d error is likely from elements becoming distorted when they projected onto the adjacent surface. Make sure you are bonded contact pairs are closely mated. If you are using at *TIE command check the tolerance you are using between the surfac…
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I increasingly find myself relying on GMsh rather than Netgen. Very often the Netgen mesher gives me too much detail where a few splines have come together, and often does not produce a mesh when GMsh does. I do wish the refinement features that a…
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The library feature was hidden in labs in V12
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Python API test - save this as modY.py select nodes, execute macro, input new Y value (m). It works! def mod_node(nodes, value): for point in nodes: mw.set_node_y(point, value) active_nodes = mw.selected_nodes() # Get selected nodes i…
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I can right-click select now, no flicker on top, looks good.
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This was a feature that started as a Lab request. If you open a blank Mecway, define a single property, then save, you have your first property. If you switch around to the different physics, you can get "everything" in there - thermal, plasticity, …
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I'm hopeless with Python but one of the guys wrote a quick example that takes the centroid of selected nodes and writes to a file. Works great. As soon as we do something useful we'll share, looking forward to everyone else's use of the Python API! …
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I didn't think there were enough versions of how to mesh a DXF file, so here goes mine. Two minutes to click the nodes in one half-section to create quads, mirror, copy, copy,refine. See attached.
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@3rav CCX input file of case
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Intel Xeon CPU E5-2698v4 2.2GHz 64GB 2min 13sec ccx 2.16 PARDISO using 10processors out of 40 ~6%CPU reported
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I'd like to say that was deliberate - it's just the machine we bought 4 years ago that "made sense". In the past, I have benchmarked mult-processor speedup, with spooles on CCX2.8. I found that 8 processors was the point of diminishing returns, …
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Intel i7-4790 3.6GHz 24GB 1min 44sec ccx 2.16 PARDISO
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We will bounce a ball to get the damping characteristics of the material. Connecting the peaks forms a curve that allows you to calculate damping from fitting a logarithmic decrement.
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I have some suggestions for you: Start small - work out the details on a "single bay" model. Extending to 4cyl can be accomplished by applying the phase angle (180deg) and firing order(1-3-4-2). Start with constant speed. To develop the pin loads…
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I ran a chunk of your model with a single strap - it looks like yours. If you use displacement scale > 1.0, the deformations for a contact run can look silly. for example, if 2 parts come into contact by part A moving right 1mm and part B moving …
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Since this thing is unattached until it is (through contact), use a very small time step initially, and let auto time step do the rest. You might also need to use an elastic support with a very low stiffness to give the pile something to make it s…
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I converted to solids, moved the straps up so that they start with an initial penetration with the pile wall, starting time step 0.01, used auto-time stepping, ramped the gravity. The straps start out very "soft" until they develop contact, so a lot…
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In fairness to the person who taught me this trick, search YouTube for "calculix hyperelastic" to see the example. Interestingly, it is also a bellows!
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I copied all of them of it, about 500MB into my PARDISO directory, and saw another significant improvement. Worth the disk space!
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how many of those DLLs are there? Maybe I have to break down and learn the right way to do this! Thanks for finding this, I'll be testing myself!
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PARDISO is nicely hidden in plain site on the Calculix website. On www.dhondt.de, look for Windows executable..... files Download the Intel MKL from here https://software.intel.com/en-us/mkl/choose-download/windows Run with ccx_pardiso solver, it …
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I keep several ccx solvers in the same directory as my default, using directories when necessary (as with PARDISO with all the dll stuff). The current version bombs with the SUBMODEL command, and some versions don't play well with the KINEMATIC stu…
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Not sure of the issue, but for reference, I am running Mecway12 (but should work in all), and Windows 7. I downloaded the zip file, extracted, double-clicked run.bat and it seemed to run fine. Below are some details The run.bat file -creates the …
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When running many variations on the same model, consider running in batch: 1- set up and run model with all unit loads, set Mecway to output a scratch.liml 2- edit *.inp to capture the load files in a file called unit_loads.inp 3- add *AMPLITUDE ca…
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VMH, I'm not sure we're supposed to share that way, but if you install the Intel MKL and then look for those files (I've screenshot so you can see the date stamp and file sizes). You will set this up quick, promise.
