I/O Options and Subcase Information Entry The MBFORCE command can be used in the I/O Options section to request force output for a set of joints and/or force elements from multibody dynamics subcases.


MBFORCE = option


Argument Options Description
option <YES, ALL, NO, NONE, SID>

Default = ALL

YES, ALL, blank
Force is output for all joints and force elements.
Forces are not output.
If a set ID is given, forces are output only for joints and force elements listed in that set.
Note: Joints and force elements may share IDs. When MBFORCE is requested for a SET, force results are output for all entities whose ID is part of the SET definition.


  1. When MBFORCE is not present, force results for joints and force elements are not output.
  2. The force results for selected joints and force elements are output to the .mrf file.