General Mechanical

General Mechanical

Invalid/missing Stress Life curve

    • 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.

    • SaiD
      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:


      https://forum.ansys.com/forums/topic/fatigue-random-vibration-analysis-error-with-stress-life-curve/


       


      Sai

    • AmirulHaziq
      Subscriber
      Yes it works.thank you
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