the rolls 5 and 6 can be varied according to the loading requirements during the tests performed the rolls 5 and 6 were adjusted symmetrically about the center line k while the angle u03b1 subtended between the center line k and the center point of the roll 6 was approx 21 u00b0 with the help of computer calculations the layered structure illustrated in fig2 was selected said structure having an epoxy or urethane elastomer modified for extreme elasticity as the core 3 the materials of the outer faces 2 and inner faces 4 were carbon fiber reinforced epoxy the radial modulus of elasticity in this material was in the range 50 100 gpa since the specifications were set as to achieve a nip width of 250 mm and 4 n mm 2 average nip pressure the roll of 1 m diameter was dimensioned as follows equal thicknesses a and b of outer face 2 and inner face 4 a b approx 5 mm the core 3 had a modulus of elasticity of 1350 n mm 2 and a shear modulus of 500 n mm 2 the results of computations were verified using a model scaled down by 1 5 the dimensioning rules were characterized by a requirement stating that a sufficiently large local displacement must be achieved without exceeding the maximum allowable stress of the outer face in addition the local stiffness of the structure had to be sufficient for reaching a desired compressive loading over the entire nip width in the.