At one time the characteristics of unsymmetric polymeric matrix fiber reinforced composite laminates were nothing more than an unexplained curiosity hyer 1981a after curing flat at an elevated temperature fig. Rather than being saddle shaped as predicted by the classical theory the paper shows that thin unsymmetric laminates cure into a shape of a right circular cylinder. 164 and 188 the optimal stacking sequence for a 10 layer symmetric laminate is determined to be 15 30 15 0 30 s it was asserted that a multilayer composite laminate can be modeled using an equivalent unidirectional fiber angle θ eq which results in approximately the same load deformation characteristics for this particular layup the equivalent.
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