General Mechanical

General Mechanical

Equivalent stress (von Mises) is higher than the yield strength

    • imselva26
      Subscriber

      Dear all,

      In order to understand, the Equivalent stress values, I have reduced my model with just 3 parts.

      It has a heating pipe, to which electricty is supplied and it is heated. The heating pipe is surrounded by insulator. The heating pipe is heated to 850 °C.

      Now I want to do the structural analysis, the bottom of the heating pipe is given an external displacement (all the values are zero). The deformation I got is around 4.5 mm and the Equivalent Von mises stress is over 100Mpa.

      I just want to understand, why this is hapennig? Is it because of the material properties? or is it because of the boundary conditions?

      It is a very simple geomentry, and I wish to get the Equivalent stress well below 3.4Mpa which is given in the material data sheet.

      Thank you

    • Ashish Khemka
      Ansys Employee
      nnThe high stress appears to be becaue of thermal condition applied.nnRegards,nAshish Khemkan
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