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General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.
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  3. Invalid/missing Stress Life curve

Invalid/missing Stress Life curve

    • June 8, 2020 at 8:13 am
      AmirulHaziq
      Subscriber

      Hi


      I am using Ansys Workbench to calculate the number of cycles till failure for an ankle implant made of CoCrMo and UHMWPE parts. The model is subjected to a 796 N load pointing upwards. I've added the material properties of isotropic elasticity, Young's Modulus, Poisson's Ratio, Ultimate tensile strength and tensile yield strength. However, once I have solved, I get the error- "Invalid or missing stress life curve". Just what exactly am I missing or which parameter is wrong? Any help will be appreciated.

    • June 8, 2020 at 1:09 pm
      Sai Deogekar
      Ansys Employee

      Hi,


      Can you check the Materials properties in Mechanical and make sure the S-N curve has been defined? The following post might help:


      /forum/forums/topic/fatigue-random-vibration-analysis-error-with-stress-life-curve/


       


      Sai

    • June 15, 2020 at 11:01 am
      AmirulHaziq
      Subscriber
      Yes it works.thank you
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