As a result, {HEAD ~ the rigidity} of {TAIL ~ the bead part} is increased, and the bead deformation h0 h1 is decreased 
As a result , { HEAD ~ the rigidity } of { TAIL ~ the bead part } is increased , and the bead deformation h0 h1 is decreased
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH