3 Replies Latest reply on Aug 21, 2009 3:36 PM by Jose Eduardo Fernandes de Camargo

    Stress Concentrations and Fatigue

      Hello,

       

      I was hoping that someone could please help me out with a fatigue issue.

       

      I am designing a 6082-T6 aluminum part that will be cyclically loaded.  After running FEA, it has a very high stress concentration in a small round.  To avoid any fatigue failures do I need to make sure that the stress concentration is below the aluminum fatigue limit?  Also, is there a general safety factor that is used with the fatigue limit to determine an allowable stress at the stress concentration area?  I would like to design for at least 10 million cycles. 

       

      Thank you very much for your help, I appreciate it.