Mean stress values - absolute value - for an entire volume: please help me! Ansys 14 1

[oguila]

Hello everybody!

I am trying to get the mean absolute value (e.g. SEQV) for an entire volume. Ansys provides max and min values, but not the mean.
After ploting the volume, the best I got was:

General Postproc > Element Table > List Element Table > select the stress I want = resulted in a list (.lis) showing the value of each element. I transfer the values to Excel, eliminate "the number of element column", and it calculates the mean for all elements.

However, it is complicated when you have thousands and thousands of elements....

Isn´t there a simple way? As Ansys provide the value of each element, can it provide the mean?

Thank you very much!

 

[flash3780]

If you need to compute a volume-averaged von mises stress, you'll probably want to use ETABLES. I think you can select the elements that you want to average and do something like this to loop through them:

cmsel,s,my_elems,elem
*get,enum,elem,0,count
EE = 0
vmvol = 0
totvol= 0
etable,vmstr,s,eqv
*do,i,1,enum
  EE = elnext(EE)
  *get,evol,elem,EE,volu
  *get,evmstr,elem,EE,etab,vmstr
  vmvol  = vmvol + evol*evmstr
  totvol = totvol + evol
*enddo
avgvm = vmvol/totvol
etable,erase,

I haven't tested that, so beware. No exchanges, substitutes or refunds.

Hope that helps. Good luck!

 

[oguila]

Thank you very much! It worked fine!