Further, {HEAD ~ the material stiffness} of {TAIL ~ the buffer element} is less than the material stiffness of the supporting base 
of
Further , { HEAD ~ the material stiffness } of { TAIL ~ the buffer element } is less than the material stiffness of the supporting base
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH