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Hello SteveMelton You comment on previous post that “I was able to apply bolt pre-tension by using offset nodes and the contact feature” Here it looks the same strategy.” prestress on rivets at .005 inch tension” ¿Do you mean you draw the bolt short…
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KLINGERSIL C-4400 I used a constant value of 3 GPa. ¿Which constitutive model would you suggest?.
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Result can be confusing. I was able to mesh it, but it only generates shell elements. The slab is "empty".
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Bad geometry Your higher element in the hierarchy is a shell with and not fully closed. Cut it with the sliding bar and you will see there is no solid to mesh below the surface.
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Nonlinear material and Quasi Static in tree steps. Bolt Preload . Internal Pressure. Internal Pressure release. -Reduce the model to 1/28 and apply symmetry: OK. I found slave nodes needs to be removed from symmetry plane in order to work. No need…
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Thanks Sergio. Actually not. Most of the models I’m working in are kind of “second opinion”. At this moment I feel much more confident with hand calculations. My main concern here was to check my skills with contact and validate maximum stress/stra…
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Hello Victor, ¿Did you have the chance to introduce an ALT- key combination to show/hide elements? Thanks
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I tried. Option (meter gmsh 4), and it correctly scales the whole mesh. I’m using gmsh 4.0.4 The problem is that on the maximum element size definition box the scale factor is not applied so it incorrectly assumes 1 mm is 1 m as the maximum element …
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Thanks Victor. Meshing looks really fast now. WOW!! When meshing with Gmsh version 4.0.4. I need to introduce minimum element size x 10E-3. I remember to comment this with you on previous version. If I do not scale it seems like when I say 1mm is…
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Stiffeners below the perforated plate looks like they are not solid objects. Seems two surfaces together very close and "empty" . Check the image below. ¿Is that what you wanted to model? The geometry healing of netgen shows some small edges too. V…
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Could you post the file? Previously clean the solution for lighter file.
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Could you attach the step file?
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290.000 Nodes solved without issues. This do not seem a limitation of ccx. At least ccx_2.14_MT Intensive PC use but windows manage properly memory usage through the hard drive in case is needed. I only have 8 Gb. Try ccx ver 14. The link is in the…
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Thanks for sharing your experience with us.
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Hello Steve. “a couple of things going on here, one, the arm to clamp interface”. ¿Which kind of contact are you considering.? I think you didn’t merge nodes as it looks like a free clamp that could open or slip but ; ¿Isn’t a phisical gap between…
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Modify the step file with your favorite software, save it with the same name and in the same place as the original and then "reload" the geometry in the geometry menu in Mecway. Do nor import as new Step, just reload. As Sergio said be sure to add …
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Hello davefo, Don’t underestimate what you got. You problem is not trivial at all. I dare you to find a code which analytically solves the transition between a skirt and a cone with the supporting line "in the cone" itself. It is not by chance that…
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Hi davefo I’m getting soft Von Misses result. Check the deformed view of your result to see if it has sense. If it blows to hell or goes out of your axis center your BC are probably wrong and Stresses are nonsense. It is not mandatory but preferab…
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Hello, Victor it would be very nice if in version 10 the circular selection tool keeps the origin fixed when zooming so you can be more accurate on the radius without losing the initial circle center. Same for rectangle selection tool. Davefo the…
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I would suggest you consider your reference axis aligned (same elevation) with the lateral pins instead of the central , so you can impose they will not move vertically, only laterally. On this new reference the pins on the axis of symmetry (both) w…
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In Mecway 8 there is an option in Tools/Labs/Propagate axis orientation to the neighbours. Very useful and it normally works pretty well. This option has disappeared in MECWAY 9 and it is replaced by the option to automatically set the axis orientat…
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Hello JRP, Something strange here. Stress on the beam should not depend on axis orientation. It is an invariant under rotation. Something is not properly represented when we see two different values of bending on the plot. I do not think you are c…
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Thank you very much to both for your help.
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I really did not pay very much attention to the angle. That is a small part of the complete dome with its supporting structure. It helps me to understand properly what am i doing before going to the complex geometry and waste too much time. ¿ Does …
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Sorry I forgot to comment I'm using MECWAY 9 and ccx_2.14_MT.exe.
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Hello Sergio, Cyclic symmetry seems not allowed in Mecway with ccx. It turns red. The inp file generated by Mecway does not contain CYCLIC SYMMETRY card. If I import the previously "save as inp file" CYCLIC SYMMETRY seems that has disappeared. ¿Am…
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Thanks both.
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Hello Victor and Guillermo, I have been following your interesting post. I have only been able to force rotation by beam elements or as a displacement imposed on elements at the same distance from a certain origin. Each one has their disadvantages…
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You could try choosing all rim elements and apply an axis change of this kind (see picture) To open this dialog box ,put cursor on top of the elements , right button and element properties menu
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I have found two issues. As far as I know Iges is a surface oriented objects format. No volume will be meshed with an iges file because there is no solid “below the surface”. I have inspected your step file. One of the holes , the one in the posi…
