Use symmetrical bolts for models
with symmetry boundary conditions, where one or two planes of
symmetry cut through a bolt with a full cross-section.
Reference Geometry For
1/2 symmetry bolts, select the plane, or planar face of
symmetry.
If you use symmetrical
bolts, for a pre-load value enter the total pre-load value of
the full section bolt; for bolt mass value, enter 1/2 or 1/4 of
the mass of the full section bolt according to the selected
symmetry type. The computed results for a symmetric bolt, such
as shear force, axial force, bending moment, and torque, equal
1/2 or 1/4 of the results computed for the full model with a
full section bolt.
Be cautious when
you are inquiring reaction forces normal to the symmetry plane
of a symmetric bolt, as the results can be erroneous. It is
possible that reactions forces from a model with symmetric bolts
cancel out when you run the simulation on a whole model with
full section bolts.
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