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disla
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Think in the other way. Mecway doesn't constrain degrees of freedom a priori so you don't need to specify something to behave "free". If you just want the plate not to move just constrain the displacements. I also recommend you follow some of the tu…
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Looking with more detail the Strain Energy density hot spots I have realized that there was a chance to improve them even more. Agreement between methods is now even better. I like this method very much . Files updated. **! NL Contact +Perturbation…
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Thank you very much Victor.
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Hi Victor, I think it would be interesting to have a button that opens the temporary folder where the .frd .dat,... are generated. They are files that contain relevant information and it is a long path and that changes in each analisys.
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Hi dculp, I have found the rod exact modes formula for the free-free BC. I have run all the 6 tests comparing 1st and 2nd bending and 1st torsional modes and biggest error is 0.04%. You can find the exact solution and test details at : https://w…
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Hi Victor, The attached file ,originally posted in the Prepomax forum by Agazzotti , is imported in MECWAY as a unique part. (Prepomax keep it separated as four parts). Keeping the different parts separated allows to assign easily different meshing…
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It works perfectly fine for me. Seems a hardware/drivers/permissions problem. Probably Victor has some other ideas. I can only suggest you reinstall MECWAY as administrator. NOTE: ¿Did you deactivate the license on your laptop before using the ne…
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"Mecway closes during solving stage with no error message." ¿Do you mean the program close, or the solver process stops and exits without solution? ¿Could you share that simple model that is failing with the internal as it is? I understand it onl…
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-I would check if Mecway has read / write permission on your workstation. -Play with the temp directory so you are sure Mecway can write there. -¿have you been able to solve simple models?. I mean, ?what happens if you make your laminate just a…
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You also have many examples of laminates in the forum with files attached that do not "Crash". Look at this for example: https://mecway.com/forum/discussion/354/composite-laminates-tutorial
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Hi Kuhl, ¿Could you post one the files that "crash"?. Without it, is difficult we can help you. Regarding the number of CPU there are many references in the forum about increasing the performance and set up the number of cores. https://mecway.co…
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This could be a good validation file as reference. Full model has 0% discrepancy with the closed form solution. Analytical solutions for finite cylinders compressed between platens (3. Homogeneous stress and strain without end friction) https://ww…
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OOh. That's weird. ¿Are you using Mecway 18? At "stress in element coordinates" neither?
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Hi, First to say is that I would define the same orientation card for all your model to be sure you extract the same component for all the elements. The last three components of the “stress in element coordinates” and “force per length” refers to …
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By the way. This is the 1/4 model. After three refinements I have end up at an equivalent plastic strain of 1.978 after 3min computation. ¿I guess if there is analytical solution for this problem and Mr. Kraska knew that?. PEEQ seems to tend to 2.
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Hi, I understand your concern. This is how I would proceed. 1-The fact that too solutions are the same (full/slice, slice/axisymmetric) doesn’t mean the solution is right unless one is validated. You need an analytical solution to compare, prefer…
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I have seen this is also done by the main Steel's connection design software in the market. "The shell is divided into five integration layers through thickness of the plate at each integration point and plastic behavior is analyzed in each point. …
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The hexagonal Bolt-model should be in fact be called JohnM-Bolt-model. Check the link below where it was first described. It's worth to spend a couple of hours and build a library. Another thing I consider interesting to look at is the meshing. Look…
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From the manual: Eight-node axisymmetric element (CAX8 and CAX8R) "The axisymmetric structure is expanded by rotation about the second coordinate axis, half clockwise and half counterclockwise." "the expansion creates only one layer of elements. C…
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I think that should be (2100Mpa+265Mpa)*1.000.000=2.365.000.000Pa *PLASTIC,HARDENING=ISOTROPIC 265000000,0 2.365.000.000,1 I see what happens. Seems like you take the second point of the line at a strain of 1.000 . Strain rarely should go beyo…
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Manual: "Sometimes, it is useful to specify that the radiation is closed. This is done by specifying a value of the environment temperature which is negative if expressed on the absolute scale (Kelvin). Then, the view factors are scaled to one exact…
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I have downloaded your file and considering only external surface to compute the view factors shouldn’t be a bad hypothesis. The winding is very dense.
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Look at the conclusions at the end of this post: https://mecway.com/forum/discussion/comment/6023/#Comment_6023 If you can live with this 15% I would try: -Uniform temperature on the spiral area. (2000K-2500K) -Consider the spiral as very tight …
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Hi Manuel, I would be very interested in validating or at least end up as close as possible to the Bearing capacity provided by EUROCODE 3. I’m posting the EC3 result for this configuration. I have changed the bolts to 8.8 as I don’t have 6.8. I’m …
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Hi Manuel, Feliz año. I would say there is some initial mesh penetration or too much clearance in the contact areas. If "Adjust" is active the nodes are projected strain free from slave to master. Those crazy nodes flying could be those adjusted …
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Hi Victor, I don’t have programing experience to evaluate how much work could be involved in one of these features. I was looking at one .inp I downloaded at YouTube below the referenced video and it seemed to me it just added the *plastic card. I’…
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Allow for plasticity on ccx when the laminated shells are isotropic. It now gives a warning. *PLASTIC + *SHELL SECTION,COMPOSITE This can be useful to add integration points to isotropic shell elements and solve Plastic behavior accurately.
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Based on the proposed example, this picture shows the GNA solution with the layered approach (6x2mm ) and how the first three modes are triggered. Like in a spectrographic analysis , displacements show three clear snaps at (0.31s , 0.39s and 0.64s).…
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Hi, I'm having some difficulties too. Not with linear buckling like in the example but with the nonlinear approach + S8/S8R. (S4 works but plasticity is not properly captured). I have seen one person solving the problem with a layered approach comb…
