General Mechanical

General Mechanical

water tank sloshing: warning ” coupled node set ..has unused node ….”

    • harsf
      Subscriber

      Hi,


      I am modelling water tank sloshing behaviour due to earthquake loading.


      I get warnings  e.g " coupled node set 19 has unused nod 1430 ". i have attached the txt. file and some photos. can anyone help?



    • Karthik R
      Administrator

      Hello,


      This warning message is saying that there is no element associated with the node. If your nodes are constrained properly, this error message should not matter. Please check your constraints. 


      Since this is a structural mechanics question - I'm moving this to the appropriate thread in hope that the discussion here gets better visibility.


      Thank you.


      Best Regards,


      Karthik

    • harsf
      Subscriber

      Thank you for the reply,


      those nodes belong to the coupled nodes at the fluid-solid interface at the left and right surfaces. i have applied a fixed support at the bottom surface of the tank only. i have used solid 186 and fluid 80 elemnts , i have no idea why this happens,, can you help?  

    • Wenlong
      Ansys Employee

      Hi,


      Can you please show the command snippet you are using?


      Regards,


      Wenlong


       

    • harsf
      Subscriber

      Hi


      i somehow managed to overcome this warning, but then water leakage occured. But here  i am attaching the images of the command 


       

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