*include,input=crank_conn_gr_ref_nodes.inp
*include,input=crank_camfollow1_nodes.inp
*include,input=crank_camfollow1_elts.inp 
*include,input=crank_materials.inp
*** coupling nodes: 
***    35 - couplig node near the follower contact surface
***    21 - follower's pivoting point
***    20 - follower's connection with the tie rods
*include,input=crank_camfollow1_coupling.inp
*********************************************
*********************************************
*step
*frequency,eigen=lanc, SIM=NO
6,
*boundary
35,1,6
21,1,6
20,1,6
*output,field,freq=0
*output,hist,freq=0
*end step
*step
*substructure generate,type=z6,overwrite,mass=yes,libr=crank_camfollow1,
recovery=yes,grav=yes
***
*** the three coupling nodes above
*RETAINED NODAL DOFS,SORTED=NO
35,1,6
21,1,6
20,1,6
*SELECT EIGENMODES
1,2,3,4,5,6
*substructure matrix output, stiffness=yes, mass=yes,file=crank_camfollow1,
recovery=yes,grav=yes
*end step