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nonlinear analysis. Large Deflection in a aluminium sheet

nonlinear analysis. Large Deflection in a aluminium sheet

nonlinear analysis. Large Deflection in a aluminium sheet

(OP)
Hello everyone:

I have a problem with a nonlinear analisis.
I have a aluminium sheet, with a small thick, that is someted a pressure at the top. Also I have the  curve stress vs strain.
I want to obtain  the stresses and deformations of the sheet, but, when I do the Solve, the program doesn´t finish.
I think, that is because, I must put the pressure by increments, but I don´t know how to do it well.

I asked every people I know, who works with ansys,but a few people, works with nonlinear analysis, so I need help.

 

RE: nonlinear analysis. Large Deflection in a aluminium sheet

What does it do when it exits from the solve? Does it give any kind of error message?

Are you working in classic or workbench?
 

RE: nonlinear analysis. Large Deflection in a aluminium sheet

For large deflection use the command NLGEOM,ON in /solu. It will basically reposition the direction of the external loads after deflection and re-iterate.


 

RE: nonlinear analysis. Large Deflection in a aluminium sheet

(OP)
Hi!!
It do nothing, doesnt finish the graphic, for that I supposed that the problem is with the pressure.

In the file ERROR, I have a lot of warnings. I send you one of the file and you can see them, because I´m doing many tests, trying to obtain the solution.

Now I´m trying to do it, dividing the load in 10 steps.

Thanks

Ahhh I´m working with classic, no workbench

RE: nonlinear analysis. Large Deflection in a aluminium sheet

(OP)
Thanks timKwan! I go to do this now.
I thought in some errors in the constrains, but I dont know where, and also maybe, in the calculations about strain and stress...

But first, I´ll try with this tutorial, Thank you very much.

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