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