General Mechanical

General Mechanical

Extract Bolt Pretension Working Load with ANSYS APDL

    • Norbert Ionas
      Subscriber

      Hi,

      Would like to extract the working load of a Bolt which has a pretension on it using APDL commands.

      Thanks,

      N

    • Ashish Khemka
      Ansys Employee

      Hi,

       

      You can use a Bolt Tool to extract the working load:

      Regards,

      Ashish Khemka

    • Bill Bulat
      Ansys Employee

      Hello Norbert,

      I'd have to experiment with a test case to be absolutely sure this works, but I'd start by making sure that you save calculated nodal forces to the results file and set "Save MAPDL db" to "Yes" before solving. These settings are made in Analysis Settings Details.

      Then, in a post processing command object, you could select the pretension elements and list forces using PRRSOL of PRRFOR:

      resume

      /post1

      set,last

      esel,s,ename,,179

      nsle

      prrfor

       

      The reactions force listing would appear in either the solve.out or post.out file, depending on whether you run the create the post processing command object before or after solving.

       

       

       

      Similarly, you could try this (if it works it'll show the net bolt load force in Details of the command object):

      esel,s,ename,,179

      nsle

      esel,inve

      nsle,u

      esel,s,ename,,179

      nsel,r,d,ux,-1e8,1e8

      fsum

      *get,my_net_bolt_load,fsum,,item,fx

      Regards,

       

      Bill

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