Extracting nodal solution at shell top, bottom or middle

- January 28, 2021 at 12:01 pm
  
  Janne
  Subscriber
  
  Hello,nin Mechanical APDL I have a plate that is meshed with 4-node structural SHELL181 elements. The plate is subjected to uniform pressure. I want to extract maximum principal stress. nIf I plot contour plot I can see that the maximum principal stress (S1) is 58.92 MPa. This is naturally on the tension side of the plate. However, my elements are oriented in a way that the tension side is actually the bottom side of the shell. nBy default, when I list the nodal results, the nodal results are shown at the top of the shell element rather than the bottom. For this reason, when I use:nasel,s,area,,1,,,1nNSORT,S,1,0,0,1n*get,PANE2_S1MAX,SORT,,MAXnI get the maximum result on the top of the shell element (30.49 MPa). This is incorrect. I want the maximum on the bottom of the shell element. nIs there something to add in NSORT or above that, that would change the position of the results within the shell? Or is there a command which allows me to get value, which is the largest out of bottom and top (total 1 value). I know that the analysis, and the results are correct, it is just matter of extracting the correct values.nThank you!n
- January 28, 2021 at 12:12 pm
  
  Janne
  Subscriber
  
  I should mention that the maximums at top and bottom of the shells are not located in the same node. 58.92 is in the middle of the plate and 30.49 somewhere else. n
- January 28, 2021 at 12:41 pm
  
  Janne
  Subscriber
  
  Hello,nI found a solution. I simply put SHELL,BOT before NSORT command. Other options are TOP and MID.n

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