A comprehensive theory for planar bending of composite laminates

Abstract Modern laminated resin matrix composite structures exhibit more pronounced transverse shear deformation than their conventional monolithic counterparts. This is because transverse shear is resin controlled and benefits little from fiber reinforcement. Recent theoretical research shows that there are additional nonclassical influences that also affect bending-related behavior of their composites. They include the consequences of section warping and its concomitant nonclassical axial stress contribution and transverse normal strain. A comprehensive theory for planar of laminates is developed and applied in this paper which accounts for these influences. It is applied to selected benchmark problems which illustrate the significance of these influences and permit comparison with previous theories.

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