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AQWA user_force error

- February 20, 2024 at 11:00 am
  
  富佳
  Subscriber
  
  Hi, i met a problem when i used aqwa user_force through python. The program stopped after about 30 steps, and show ANALYSIS ERROR USER_FORCE DLL ERROR NUMBER 1179901292. I simulated the two-bodies floating structure. Expected a answer.
  And i also want to know how to use use_force in Workbench.
- February 22, 2024 at 11:19 am
  
  Mike Pettit
  Ansys Employee
  
  Hello,
  Are you able to share your Python script here?
  For running a Python user-defined force function through Workbench, you should turn on the time domain Analysis Settings option 'Connect to Server for External "user_force" Calculation', and use the option 'External Operation before Solving' to launch the Python server.
  Mike
- February 27, 2024 at 2:23 am
  
  富佳
  Subscriber
  
  Thank you for much,I have solved my problem of python script.
  I also want to know the detail of 'External Operation before Solving' for using in Workbench. Hope your response.
- February 27, 2024 at 2:54 pm
  Mike Pettit
  Ansys Employee
  Hello, I'm glad you got it resolved.
  The 'External Operation before Solving' option allows you to either:
  - Run a command, as if you were entering it in the Windows Command Prompt; or
  - Run a Python script, where the script can be defined directly in the Aqwa Workbench editor, or you can load a script from disk.
  Both of these operations are performed after the Aqwa input file has been generated, but before the solver is executed.
  I hope this helps!
  Mike
  - March 5, 2024 at 12:24 pm
    
    Lijie Yuan
    Subscriber
    
    Hi,I’m currently experiencing the same problem. My question is ：In the workbench interface, is it still necessary to follow the instructions in the manual, running the .py file first to establish the connection when running a Python user-defined force function ?
    By the way, what is the meaning of USER_FORCE DLL ERROR NUMBER 1?
    Thank you very much
    - March 11, 2024 at 12:00 pm
      
      Mike Pettit
      Ansys Employee
      
      Hello,
      I've just posted an answer to this under your separate thread: /forum/forums/topic/aqwa-user-force/#post-356339
      Cheers, Mike
- March 5, 2024 at 11:50 am
  
  Lijie Yuan
  Subscriber
  
  Is it possible for us to communicate via email to discuss issues in this regard?
  
  Yljgoodmail@163.com
  - March 11, 2024 at 12:03 pm
    
    Mike Pettit
    Ansys Employee
    
    Hello,
    As an Ansys employee I'm not allowed to correspond outside of this forum, but maybe OP can help you out.
    Mike

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