In this way, {HEAD ~ the bead damage} may be suppressed by {TAIL ~ the synergistic action} of the reducing effect of the bending stress and deformation heat generation by decrease of bead deformation, and alleviating the effect of the shearing stress 
In this way , { HEAD ~ the bead damage } may be suppressed by { TAIL ~ the synergistic action } of the reducing effect of the bending stress and deformation heat generation by decrease of bead deformation , and alleviating the effect of the shearing stress
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH