Author Topic: csurf + (plot,hide)->stack overflow  (Read 8449 times)

maxlox

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csurf + (plot,hide)->stack overflow
« on: December 15, 2013, 09:11:37 AM »
Hi all,
I've a problem to assign loads on 3d surface with csurface.
At the end of attached I-file I've load a portion of a surface with -8000 unit in x3: the O-file don't report them.
Where's my error?

When I'm in plot window (in batch or interactive mode after plot,perspective ...) typing "hide" the program do a "stack overflow". What's the matter?

Thanks.

Max
** maxlox **

FEAP_Admin

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Re: csurf + (plot,hide)->stack overflow
« Reply #1 on: December 15, 2013, 01:05:19 PM »
I tried hide with your input file and it worked fine so i'm not sure what the problem is with your version.
Regarding csur it is not possible for anyone but you to debug given the complexity of your structure.
Also it is not clear what you expect to simulate use 2D elasticity element in a 3D structure.  Perhaps you
want shell elements?


maxlox

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Re: csurf + (plot,hide)->stack overflow
« Reply #2 on: December 16, 2013, 10:15:59 AM »
Hi FEAP_Admin,

I tried hide with your input file and it worked fine so i'm not sure what the problem is with your version.
I'm using FEAPpv ver. 3.1 rev. f 2013/08/12 64 bit on OS windows 7 64bit

Regarding csur it is not possible for anyone but you to debug given the complexity of your structure.
I've generated the mesh with netgen 5.1 (from a CSG file). In the area delimeted by the four point in csurf command there is a portion of cantilever: how can I debug an error  :'(

Also it is not clear what you expect to simulate use 2D elasticity element in a 3D structure.  Perhaps you
want shell elements?
I've used a solid 4-node tetrahedron with 3dof, not 2D: make I a mistake ?  :-[

Thank's
Max
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maxlox

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Re: csurf + (plot,hide)->stack overflow
« Reply #3 on: December 17, 2013, 10:21:34 PM »
Hi all,

I tried hide with your input file and it worked fine so i'm not sure what the problem is with your version.
I'm using FEAPpv ver. 3.1 rev. f 2013/08/12 64 bit on OS windows 7 64bit
Yes, using my full version of FEAP ver. 7.5.t 2005/04/29 ( ;) ) on OS windows xp 32bit the input file worked fine to me too !  ???  .... the compiled version of FEAPpv 64bit have some problem?

Regarding csur it is not possible for anyone but you to debug given the complexity of your structure.
My 'csurf' problem ... have anyone tried to solved it?

Thank's
Max
** maxlox **

FEAP_Admin

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Re: csurf + (plot,hide)->stack overflow
« Reply #4 on: December 18, 2013, 10:48:39 AM »
I just tried with feappv (v3.1 on my mac), it loaded your file and plotted just fine.

But I did not see any load. Three things to check:

1) that your csur uses a counterclockwise numbering (for the outward normal)
2) your tets appear to be numbered backwards; see the manual for the convention
3) please check the source code to make sure that csur works with tets in FEAPpv