We’re putting the final touches on our new badges platform. Badge issuance remains temporarily paused, but all completions are being recorded and will be fulfilled once the platform is live. Thank you for your patience.
Structural & Thermal

Structural & Thermal

Why are moment probe calculations scoped to contact so far off when large deflection is turned ON?

    • FAQFAQ
      Participant

      For those Moment probes which perform a moment arm calculation, Mechanical employs the undisplaced mesh. In other words, when Mechanical computes a moment arm for a node, it finds the difference between the (x,y,z) of the node and the summation point (sx,sy,sz) in the base mesh: moment_arm = (x,y,z) – (sx,sy,sz) Note that the above formula differs from how Mechanical APDL performs a moment arm calculation and therefore, the results between the two applications differ. Mechanical APDL uses the FSUM command for large scale deformation analyses (NLGEOM,ON). In Mechanical APDL, node-based displacements, where the NLGEOM,ON command is issued, are added to the (x,y,z) in the base mesh, such that: moment_arm = (x+ux,y+uy,z+uz) – (sx,sy,sz)