1 Reply Latest reply on Jul 13, 2014 2:35 PM by Jerry Steiger

    Section Modulus

    Lakhvinder Singh

      Hi,

       

      I am trying to calculation the Principal Moments of Inertia of a section. But when I click on the section, the Principal MoI is calculated about the centroid of the section by SolidWorks (please see attached).

      But I need to calculate the Principal MoI according to X and Y axis as shown. I even tried to make a new coordinate system, but the Principal MoI does not change. Any advice on how can I accomplish this? In the end, I just need to calculate the Section Modulus with respect to X and Y axis.

       

      Regards,

       

      LS

        • Re: Section Modulus
          Jerry Steiger

          LS,

           

          I don't know how SolidWorks handles this question, but I would go back to my textbook and use the parallel axis theorem.

           

          Izz=Io+A*d^2

           

          Izz= the moment around the axis that you want

          Io=the moment of the section about it centroid.

          A=area of section

          d=distance from axis to centroid

           

          Jerry S.