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Hey Guys
I am beginner in APDL. I want to use shell 181 to mesh a thin plate. what is different between real constant and section?
Both have parameters for defining thickness and mass? so, which one I use ? what are differences?
thanks in advance

RE: shell181

There are no real constants defined for SHELL181, so you must use a section.

Rick Fischer
Principal Engineer
Argonne National Laboratory

RE: shell181

Thanks rickfischer51
Actually you are right about pre-processor tabs. But It is possible to add rc for shell181 by r command,I solved a thin plate by r command.My question is what is benefit of rc?
Thanks for your attention rick.

RE: shell181

There is nothing in the manual regarding real constants for SHELL181. I still have V14.5 installed, nothing there either. My guess is the element was created with a real constant thickness, and that feature has been undocumented in favor of sections. If it still works, I guess its OK to use. One thing I've run into is the emodif command does not work to alter any attributes via the section method.

Rick Fischer
Principal Engineer
Argonne National Laboratory

RE: shell181

I use V18 and , here there is nothing in manual about realconstant too, but in macro line r command works!
Anyway,can I know what is your trouble with emodif,and what was your example? I wonder when this command is useful?
Thanks Rick

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