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On a QUAD 1x1, pinned at all nodes ( see the image ), I apply a constant pressure-traction (PLOAD4) at x-direction, with a magnitude of 10. The Tx reactions on each support is 2.5 as expected. Total X force = 10*1*1=10. Each support takes 10/4=2.5. I create a Cylindrical Coordinate System...

Thank you all guys for your advices![bigsmile]

MacGyver, of course an engineer is not a programmer. But also, a programmer is not an engineer. So, the question is: Is it better to learn a programmer engineering, or an engineer programming? The engineer who can program, it's better from a developer who programming FEA, just by put down the...

Well...the engineer, will first learn how to program and then will go on with the developing of the code. It's easier for them to learn an engineer to program, than to learn a programmer engineering. So, I would like to learn from you if the programming, after some time becomes boring? May you...

I have the oppurtunity to work for a company that develops a Finite Element Solver. I must choose between the next two: 1) Programming of FEM method etc, with C, C#. 2) Performing analyses to check if the solver works properly. I have worked as a structural engineer, 10 years now, where I have...

Finally I find it. The problem was that the master and slave sets, where defined by the solid facets of the elements that come in contact. In the file that works fine, the master and slave sets include the whole solid elements and not the only the facets that come to contact. I don't why this...

I did it with convergence ratios been equal to 0,1. Try both with NLPARM and NLSTEP. It's not working again. The same behavior as before. The problem is that for some reason, the contact in some steps is behave as glued contact...if you see the videos it's clear.

OK, I'll try, but I would not be happy if it could be solved by adjusting the convergence ratios in so "big" values. A value of 0,01 it's not a promising value for a reliable results. Also in addition to SOL601, where the solution is very easy with pretty small convergence ratios. I will try...

And the crazy thing, is that when I modify the model and the initial position of the male is out of the female and i just move it, it's all working fine!![ponder] https://app.box.com/s/tkbmcs3ay0wjg1b956ov85fom22qleia

From where you set it in the pre-processor. Do you use PATRAN or something else? From where you initially set it. From there, you can edit it. Or, you can simply change the settings to the *.nas file (or dat or bdf etc)

1) I used TSTEPNL because it 's a pseudo-transient analysis (3 seconds duration, so the inertia effects have no meaning), cause I didn 't want to do it as a static with steps. 2)TLOAD is the correspondence to the DLOAD I didn 't find a reason so I tried to do a static analysis with step. And I...

As you can see in the end of .f06 file, you have give wrong values for TSTEPNL. Try to run the file with the following entries for TSTEPNL TSTEPNL 1 20 1e-3 1 5 10

It 's not SOL 600. It's SOL 601 of NxNastran (by ADINA). I always worked for nonlinear contact problems with Femap and SOL 601. Almost everything I did could be easily solved. Then I start using MSC's SOL 400...as the original one. But in some contact problems, it just not converged...Also, I...

Hello, I have a model with solid elements, simulating a clip, as you can see in the image below. In SOL 601, with NxNastran, I can easily simulate the male clip moving out from the female and in again with a transient analysis, as you can see in the images sequence. But when I try to perform...

UPDATE! I only made it with criteria style. I set up right the criteria levels for pass and fail and it works fine. The failed elements are not showed. But in contour style the problem remains....

Criteria levels for elements that Pass or Fail has nothing to do with the visibility of the failed elements in contour style view results. Are for criteria style view results. But even if I turn the results presentation to criteria view, these parameters does not affect the view of failed...

The problem is that Femap does not have the opportunity for not showing the failed elements. Below you can see the above file with the ball and plate, reading from another post-processor, not Femap. In the first picture you can see the failed elements as it came from Femap, with grey color. In...

I have tried also with smaller elements to other models, and I always had the same problem. I have analyzed models with bigger elements on other explicit solvers, such as Ls-Dyna and Pam-Crash and never had such problems. Only with NxNastran I have this annoying problems...

Also, in this video https://www.youtube.com/watch?v=hhqigu_PHCk, the same happens, but the user did the "trick" with the black backround and the black elements color and the problem is not well appearing. Also, in the 3rd video here...

I tried many to times to run an Explicit analysis, but I think Femap doesn 't behave as it should, or better, as other Explicit solvers do. Like LS-Dyna or Abaqus. I tried to do something like this http://www.dynaexamples.com/intro-by-j.-reid/symtube (select the animated result to see it...