Simulation of a ring in ansys (error message)

[Flout]

I am a newbie in ansys and I need some help of you guys.

I started the simulation but I got some errors:

Shell element 1 does not have a valid section ID or real constants
Shell element 2 does not have a valid section ID or real constants
Shell element 3 does not have a valid section ID or real constants
Shell element 4 does not have a valid section ID or real constants
Shell element 5 does not have a valid section ID or real constants

I am using Ansys 14 and the element is shell181 and I can't input the real constants because ansys says:
"Real constants for SHELL181 element type are no longer supported."

Why I got this errors?

 

[Drej]

You will need to use the SEC#### series of commands to define the section properties of the shell (see SECDATA for example).


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[Flout]

How do I use it man?

Sorry for my newbie questions.