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protontim
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Used the recommended method for both parts shown. Joined them with bonded contact. Made for a very clean mesh on a part that previously would not even mesh. Thanks again for the help.
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Thanks so much for the help. Greatly appreciated. Sergio, I had tried something similar to your method and got to work, but your method is superior. Thank you and thanks to VMH for the informative illustrations. Problem resolved.
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I can't seem to get it to mesh. Crashes appear to be because of "intersecting elements."
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Yes it is one triangle that also selects a neighboring real surface. When meshing, it gets all the way to generate the volume mesh (takes a long time to get there as there is a bit of complexity to the part) and then crashes. I'll tweak the meshing…
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Hi Victor, Great work as usual. I was wondering if you might consider adding support for a 3D mouse like the 3D Connexion products. This allows for simple examination of the part in 3D space. Thanks, Tim
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Hi Victor, Thanks for the answer. I have used calculix and it works great, but your user interface runs circles around its (virtually nonexistent) interface. I would really appreciate it if you could continue to develop your pre and post processo…
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Thank you all very much for your responses. I have installed Netgen 5 and I am on my way. Thanks again.
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VMH the step file should be attached. Turns out gmsh is not the panacea I thought it was. Getting bogus results because of mesh sizing.
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here is the file that is giving me the trouble
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its just the meshing program that crashes. Mecway does just fine recovering from it. If you still want the step I think I can dig it up.
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I looked around and found gmsh - works great. Mecway read in the mesh it generated just fine. I am up and running.
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Victor, Thanks for pointing me to Calculix. I wrote a script to generate my mesh and my amplitude profiles. The input deck turned out to be about 47,500 lines. The simulation seems to be yielding reasonable results although the graphical display …
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Figured it out, sorry to bother you.
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I looked at the .frd file and the stress data appears to be there. It just does not show in the Calculix Graphix window. I'll try and track down why.
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Victor, I realize this is beyond the scope of this forum, but any help would be appreciated. I ported the file to Calculix but I can only display displacement. Stress is not being saved to the file. Any ideas why this might happen. Below is the…
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Hi Victor, I exported the file to a Calculix .inp file. Mesh and material came over fine, but it looks like the loads are not making it over. Working on coming up to speed on Calculix. Thanks.
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Havsula, It's really excellent code. Best deal I've found in a long time.
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Thanks for that clarification.
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Hey prop_design, Appreciate your comments. The whole purpose of this particular simulation was to explore the effects of centrifugal stiffening. It would seem to me that if the blade is undeflected in the static analysis, then the lift forces wi…
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Simple enough. Thanks!
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Hello Gentlemen, Thanks for all your help. Here are a few points to clarify. ROTATIONAL AXIS The rotational axis is through the aerodynamic center not the center of mass. This is intentional to avoid any lift induced twisting moments. I'm okay …
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Hey prop_design, It is a 6' radius hollow aluminum rotor. The reaction force at the "hub" is 1230lbs @552 rpm, so the centrifugal forces are significant. I bumped it up to 1000rpm resulting in a reaction force of 4034 lbs - still there is no sign…
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It looks like the xml code does not display on the screen. Attached is a screen capture showing the xml. Thanks!
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Thanks. I purchased the book you referenced to have a closer look. I will contact you by email if it seems profitable. Thanks again.
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Thanks. I got it working. I had to merge nodes at my junctions to make things work correctly but I am good to go. Thanks again.
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Hi Victor, That looks really good. Two questions if I might. 1) How do I find maximum stress (like vonMises) in the frame? 2) Is there a section in the tutorial that shows me how to construct a structure out of individual elements? What I am looki…
