Default contact auto detection off

- August 7, 2022 at 3:12 pm
  
  greg2835
  Subscriber
  
  Is there a way to have contact auto detection off by default? We keep running into scenarios where auto detection is causing issues.
- August 8, 2022 at 8:01 am
  
  Surya Prakash
  Ansys Employee
  
  Hi @greg2835,
  The contact auto-detection can be turned off in the workbench by going to file>options>mechanical>turning off auto-detection. Please refer to the image attached. Hope this helps.
  
  Thanks,
  Surya
- August 8, 2022 at 4:40 pm
  
  greg2835
  Subscriber
  
  I can't believe I missed that. Thanks Suyra.
- August 9, 2022 at 11:18 am
  
  peteroznewman
  Subscriber
  
  I can't believe Auto Detect Contact On Attach is turned on by default. This is a terrible choice for users with associative CAD interfaces who don't realize it is an automatic feature. They bring in their geometry the first time, get a model working, usually by deleting many unhelpful contacts. Then they update the geometry and get hit with all those old contacts that they don't want and it's hard to discern the "new" contacts from the ones that were carefully checked during the model building task.
- August 9, 2022 at 11:21 pm
  
  greg2835
  Subscriber
  
  Peter, I fully agree. In my lab, if we see erroneous results or convergence issues we assume we need to pay attention to mesh, load steps, contact "relief", etc. We don't immediately think that new contacts were generated without our knowledge.