In operation the working part bends to help distribute recoil foces evenly over the area of the face of the working part and {HEAD ~ the struts deflections} decrease {TAIL ~ the angles}, increasing the mechanical advantage of the struts in stretching the working piece, thus giving the pad a fairly load/deflection characteristic 
In operation the working part bends to help distribute recoil foces evenly over the area of the face of the working part and { HEAD ~ the struts deflections } decrease { TAIL ~ the angles } , increasing the mechanical advantage of the struts in stretching the working piece , thus giving the pad a fairly load / deflection characteristic
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