General Mechanical

General Mechanical

uniform force in long period of time

    • Mehran
      Subscriber

      Hi everyone, i want to apply a fix force in 4 hours to one beam,i dont know how to work with  transient structure.would you help me? 

    • peteroznewman
      Subscriber

      Hi Mehran,


      Since you mention 4 hours, this implies that inertial forces are insignficant so you can run this model in a Static Structural system. You only need to use Transient Structural if the accelerations get high enough where the inertia forces on the mass become significant.


      You need to create a material with a viscoelastic or viscoplastic behavior to build a model that simulates the creep that occurs when a constant force is applied for a period of time.


      Do you have experimental creep data from a material sample?  That is most important.


      Regards,
      Peter

    • Mehran
      Subscriber

      love you man!  tnx


       

    • Mehran
      Subscriber

      hi peter, im working with a pressure vessel that works in specific working cycle:


      1) 4 hours takes that its pressure become 0 to 103 Mpa


      2) 4 hours holds 103 Mpa 


      3) 5 hours takes that its pressure beacome 103 Mpa to 0


      i dont know how simulate this in static stractural or other parts


      can u help me?


      plz explain in simple mode im new with ansys.tnx

    • peteroznewman
      Subscriber

      Answered in this discussion.

    • peteroznewman
      Subscriber

      For anyone interested in Creep, here is a relevant discussion.

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