General Mechanical

General Mechanical

SURF154 axes

    • Loui



      why is axis x shown as element axis, if xij should be that?



      Regards, Loui.

    • Sandeep Medikonda
      Ansys Employee


      It is not obvious to me what the X Y and Z axes represent in the two geometry figures for SURF154 (Figure 154.1).  They seem to match the direction of those in the first pressure load figure (Figure 154.2)  but those are based on a non-default element coordinate system. The triad is usually for global Cartesian so they are not the default nodal directions.     The Xij in the geometry figure is for the default element coordinate system X axis.   I think it is a documentation defect and I've already filed one as well.  I see that SURF152 which is the 3D thermal surface effect element shows only one triad and it also says "The element x-axis is parallel to the I-J side of the element."

      Anyway, Thanks for bringing this to our attention.

      Guidelines to the Student Community

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