Stuck? 
support@mecway.com
support@mecway.com
Mecway
FEA
disla
About
- Username
- disla
- Joined
- Visits
- 1,954
- Last Active
- Roles
- Member
Comments
-
Wow, didn't know about this option of separating the load from the loads for buckling. I will try. Seems the proper way to do it. Thanks Victor.
-
One thing that it is important gwillis, When you say: "If the other degrees of freedom are not specified (4-6? rotations around x,y,z axes?) as you have done...." -I have not specify anything around x,y,z axes. I have stablished a relationship be…
-
Not sure I understand your question,.. If two beams share a node, the software automatically consider the connection as rigid. (Same displacement and same rotation of both beams at that point) If you separate the beams without any node in comm…
-
It is a Mecway file . The file has 21 nodes so you can run it in Mecway I I'm not wrong. Victor can confirm that.
-
Buckling Load Loading conditions have been changed as load is now applied to the web. 887KN ccx against 822KN Internal Solver. Without 100N 872KN ccx against With 100N To be fair the 100N should be applied incrementally as 100*t. (*) First mode…
-
Find example with arbitrary loads on the beam and free to rotate. Just need to keep in mind that Pinned means same node displacement and rigid same displacement plus same rotation. In this case, for large deflections I would go to nonlinear analisys…
-
Hi, I would draw independent beams not sharing any node and impose the link through constrain equations on the vertical displacement for example. See attached file. 1 uz3 - 1 uz8 = 0 Where 3 and 8 are the corresponding nodes at the connection p…
-
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 …
-
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 …
-
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…
-
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…
-
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…
-
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. …
-
¿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…
-
Very good post JohnM. Covid's fatigue challenge.
-
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…
-
Thank you very much Victor. Looks amazing.
-
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 …
-
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 …
-
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…
-
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.
-
Internal solver seems to solve pretty accurate once refined. You can recognize clearly a pattern which is also a good sign.
-
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…
-
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?
-
Do not forget super useful "Edge detecting selection" at the end of the "Edit" menu. I work 90% of times also with curved surfaces.
-
..
-
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…
-
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 …
-
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…
-
Hi fernandezpelayo Do you mean by custom model definition or new constrain equation. ¿Would you share your trick?
