General Mechanical

General Mechanical

Topics relate to Mechanical Enterprise, Motion, Additive Print and more

Equivalent Alternating Stress and Mean Stress Theory

    • Stuart Milam

      Howdy all,


      I am trying to get a handle around how Ansys fatigue tool accounts for mean stressses. I know essentially that tensile mean stresses reduce fatigue life and essentially increase the alternating stresses that are compared to the SN curve. 
      My question is how (algebraically) is this correction done in the case of Goodman?

    • Ashish Khemka
      Ansys Employee

      Hi Stuart,

      Please see if the following posts help you:

      Fatigue Analysis (

      Accounting for a Non-Zero Mean Stress in FA | Ansys Mechanical (


      Ashish Khemka

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