Learning Forum

[Noelly]

Hello,

I'm trying to find the average stress value on a face in Static Structural (the maximum value is the design criterion but for this application, I also need to report the average value). I've never used APDL before so I found this code online for a command:

!   Commands inserted into this file will be executed immediately after the ANSYS /POST1 command.



!   Active UNIT system in Workbench when this object was created:  U.S. Customary (in, lbm, lbf, s, V, A)

!   NOTE:  Any data that requires units (such as mass) is assumed to be in the consistent solver unit system.

!                See Solving Units in the help system for more information.



/post1

allsel,all



set,last			! Read result set

cmsel,s,face_01,node		! Select the node group

Atot=0.0                  	! Reset total area value.

tot_stress=0.0            	! Reset total volume times stress value.

*GET,NNUM,NODE,0,COUNT  	! Get total number of nodes in the name selection

ncounter = 0 			! Node number counter reset to zero



*DO,I,1,NNUM,1					! Loop over all the selected nodes

ncounter = ndnext(ncounter)		! Acess the next node in the selection

narea = arnode(ncounter)		! Calculate the area associated with this node

*GET,vonmises,NODE,ncounter,s,EQV	! Calculate the stress at this node.

tot_stress = tot_stress + narea*vonmises

Atot = narea + Atot

*ENDDO

my_avestress1=tot_stress/Atot               	! Calculate average stress.

fini

And I defined the face of interest as "face_01":

But there is no solution... I think the problem is to access the result set but I don't know why it does not work. 

I also tried using the probe but it does not give average values.