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