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I'm sorry Aftab, Hope you didn't have a heart attack with my small result. I have applied symmetry, but your model has one fixed and one sliding support. My fault did not see it. 764KN ccx against 740KN Internal Solver. 760KN ccx once refined. I …
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HI Aftab, I'm getting both the same result after some arrangements. -I normally introduce the load as 1 so the buckling factor becomes the buckling load. -Symmetry as far as I can to reduce computation time. -Work some minutes on axis orientation …
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I think that for beam theory 1- cross sections of the beam do not deform in a significant manner under the application of transverse or axial loads and can be assumed as rigid. 2-during deformation, the cross section of the beam is assumed to rema…
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Another observation. When we set a displacement BC to a node of a second order beam element in ccx , the BC is only transferred to the vertex nodes when it is expanded to the corresponding cuadratic solid element. Middle nodes do not respect the BD…
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Just in case it helps to solve the issue , in this particular case ,less refinement helps. Edited: Dimensioning the element to a more squared shape also helps. This two workarrounds suggest me that maybe the issue is some shear locking as the ind…
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Hi mmartin, This is how I would normally simulate Pinned and Clamped beam connection as a whole. The effect is clearly seen on the main beam deformation. Keep i mind that for the main beam, stresses can be underestimated when using beam elements. …
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¿Would it be the same if you introduce the formula as a temperature?. Nodal values will be immediately showing the result of the formula at that point without the need of solving. Once the formula is checked, if it is correct you can supress from ac…
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Very good post JohnM. Covid's fatigue challenge.
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Hello, I remember working on this some time ago. I have rescued some formulas and attach example. If I'm not wrong that profile belongs to EN 1993-4. Anex C I have substitute dc/H by Pi number for you to easily identify it and also cylindrical stre…
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Thank you very much Victor. Looks amazing.
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I was very surprised about cmmcnamara results on his i7. i7 6700HQ @ 2.60GHz RAM: 16.00GB Kingston DDR4-2400 Run Time: 01:56 My spects are very close apart from ram speed. i7 4700MQ @ 2.4GHz RAM: 16.00GB DDR3-1600 Run time: 5 Min 17 Sec I have …
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Very good numbers, JohnM. i7-4790 looks really optimized performance versus price. ¿Are you running on Windows platform + Mecway or ccx pardiso on Linux? Seems that the mem amount is more important than the mem frequency. ¿Don't you think? ¿Why …
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CPU: i7 4700MQ (2.4GHz -3.40 GHz) (Refurbished 2015) Nvidia Gforce745M Cores-4 Threads-8 DDR3 2X8GB PC3 12800 Dual Chanel (800Mhz) SSD Update:SanDisk Ultra II 480GB Update Laptop Total Investment 760,00€. CCX Pardiso 2.16 using 4 cores Intel mkl 2…
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Check this. This would be more oriented to see the stresses and strains of the pipe resting on a rigid saddle. To evaluate the slings, you should include them on the model.
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Internal solver seems to solve pretty accurate once refined. You can recognize clearly a pattern which is also a good sign.
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In general, when solving buckling you need a mesh size capable to capture the size of the smallest wave pattern. Here , mesh size is too rough to capture it and results are not accurate in any of the two solvers in my opinion. Try a thickness of 20m…
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Hello, I'm running Sergio's liml file. ¿How is it possible that being the time period for the Analysis settings menu 1s the calculation is at 1.4s and still running?
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Do not forget super useful "Edge detecting selection" at the end of the "Edit" menu. I work 90% of times also with curved surfaces.
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Hi badbunny, ¿Have you try to set the viewpoint parallel to the surface? This way you can select with a rectangle the whole model and only the external edges will be selected as the other ones remains behind. See pdf for the sequence. Be sure to se…
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Hello Victor, But if we set an infinite combination of accessible boundary conditions to a problem : 0 = 1 ux5 + 1 ux14 + 1 ux13 + 1 ux9 + 1 ux17 + 1 ux18 + 1 ux6 + 1 ux15 + 1 ux3 0 = 1 uy5 + 1 uy14 + 1 uy13 + 1 uy9 + 1 uy17 + 1 uy18 + 1 uy6 + 1 …
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Hello Victor, I’m kind of puzzled with your bug and the liml file that has emerged it. ¿Why do you say there is a bug? Both conditions are satisfied at the involved nodes at least with an equivalent accuracy (see pdf). The boundary condition is kin…
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Hi fernandezpelayo Do you mean by custom model definition or new constrain equation. ¿Would you share your trick?
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Upps. Ok. I thought you file already had the right material.
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Hello Andrea, Nice to hear you . You have been in silence for a while. I think your problem is about initial distance between ball and target for contact to solve properly. Check attached file. Solution is less than 3 min. Solver stops once you are…
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MKL 2019 Update 3 for Windows just for FORTRAN is enough not the full collection with C++ . Visual studio integration is not required. Do not move files . Add to path according to picture 5.png of prop_designprop_design post to locate the files. R…
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It is a mesh problem. You have poor quality elements. Very thin triangles. Could you post the underlying geometry. ¿Step, iges,..?
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I did not read properly your post heading Attach example . There is a specific section RIGID BODY in the cccx manual. I'm still not sure how does the REF and ROT NODE works What I found is that you can define different body objects to behave as u…
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Very high Young's Modulus ?
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I faced this issue recently. Check this option in case you need to maintain the support point with fixed coordinates. It allows to adjust the rotational stiffness.
