Pre-tension note

Casper Kruger
Casper Kruger Altair Community Member
edited November 2021 in Community Q&A

Hi - I created a bolted flange FE model with pretension and it runs, but i get the below note during the run and was wondering why it states zero force will be applied. I created the pretension using the manager and used a force and new load collector. See screen shot below.

  1. Any idea why this note appears?
  2. Also, I have a slide contact on the flange faces and the gap is zero, but the graph during the run shows the gap as 334 towards the end, should this not be zero as the faces are touching or is this just a factor? See screen shot below. 

NOTE # 6544
Zero force will be applied on pretension sections which are defined but
not explicitly loaded via PRETENSION command. Zero relative deformation
can be enforced there by PRETPRM,INILOAD,ZEROA instead.

 

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