*ELSET,ELSET=driveshaft-differential,GEN
*SURFACE,NAME=driveshaft-differential,TYPE=ELEMENT
driveshaft-differential,SNEG
*COUPLING,REF NODE=983103,SURFACE=driveshaft-differential,CONSTRAINT NAME=driveshaft-differential
*DISTRIBUTING
**-------------------------------------------------------
*ELSET,ELSET=driveshaft-transmission,GEN
*SURFACE,NAME=driveshaft-transmission,TYPE=ELEMENT
driveshaft-transmission,SNEG
*COUPLING,REF NODE=983101,SURFACE=driveshaft-transmission,CONSTRAINT NAME=driveshaft-transmission
*DISTRIBUTING
**-------------------------------------------------------
** add dummy mass/rotary inertia to coupling ref nodes
*ELEMENT, TYPE=MASS, ELSET=driveshaft_mass
*MASS, ELSET=driveshaft_mass
<small_mass>,
*ELEMENT, TYPE=ROTARYI, ELSET=driveshaft_rotary
*ROTARY INERTIA, ELSET=driveshaft_rotary
<small_rota>,<small_rota>,<small_rota>
**------------------------------------
*nset,nset=retained_driveshaft,unsorted
*nset,nset=retained_all
retained_driveshaft,
**