Friction is generated between the outer surface of {HEAD ~ the unattached portion} of {TAIL ~ the friction damper} and the underside of the adjacent shroud 
of
Friction is generated between the outer surface of { HEAD ~ the unattached portion } of { TAIL ~ the friction damper } and the underside of the adjacent shroud
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH