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