**
** coupling surfaces
**
*surface,name=lower_arm_left_hole_front
lower_arm_left_hole_front,spos
*coupling,ref node=101834,surface=lower_arm_left_hole_front,constraint name=lower_arm_left_hole_front
*distributing
**
**
*surface,name=lower_arm_left_hole_back
lower_arm_left_hole_back,spos
*coupling,ref node=101831,surface=lower_arm_left_hole_back,constraint name=lower_arm_left_hole_back
*distributing
**
**
*surface,name=lower_arm_left_tip
lower_arm_left_tip,spos
*coupling,ref node=906343,surface=lower_arm_left_tip,constraint name=lower_arm_left_tip
*distributing
**
**
*nset,nset=lower_arm_left_strut
101427,
101428,   
101429,
101430,
101431,
101432,
101434,
101435,
101436,
101437,
101445,
101448,
101450,
101452,
101454,
*surface, type=node,name=lower_arm_left_strut
lower_arm_left_strut,1.0
*coupling,ref node=971496,surface=lower_arm_left_strut,constraint name=lower_arm_left_strut
*distributing
**--------------------------------------------------------------
** add dummy mass/rotary inertia to coupling ref nodes
*ELEMENT, TYPE=MASS, ELSET=lower_arm_left_mass
801001,101834
801002,101831
801003,906343
801004,971496
*MASS, ELSET=lower_arm_left_mass
<small_mass>,
*ELEMENT, TYPE=ROTARYI, ELSET=lower_arm_left_rotary
801021,101834
801022,101831
801023,906343
801024,971496
*ROTARY INERTIA, ELSET=lower_arm_left_rotary
<small_rota>,<small_rota>,<small_rota>
**--------------------------------------------------------------
*nset,nset=retained_lower_arm_left,unsorted
101834,
101831,
906343,
971496,
101470,
*nset,nset=retained_all
retained_lower_arm_left,
**