n increases x axis the inter laminar shear stress is reduced y axis in the present example the nylon pads have a thickness of 0 140 in the method of determining the appropriate dimensions of the nylon pads 36 44 and 46 as well as the setback distance c of the bolt through holes 40 42 is derived in the method moment transfer design set forth below for a given isolator frequency and stiffness requirements using traditional curved beam design equations an optimum open section spring arm configuration can be designed to determine the spring arm radius width thickness and composite material laminate definition all the design constraints are satisfied except the critical spring arm moment transfer from the composite spring arm into the spring arm retention area to optimize this aspect of the spring arm design a unique series of design steps are executed to create a retention configuration of the composite spring arm metal hub metal retention plates and nylon pads that are situated between the hub and plates and the retention bolts for a given isolator design requirements k e 0 3 u00d7 bh 3 12 ue89e r 3 1 the open section strain due to inplane design motion is u025b u03b1 ue89e ue89e h 0 3 ue89e u03c0 ue89e ue89e r 2 2 once the composite spring arm is.