Determining the transverse normal and shear stresses ar ean important part of the design process for layered materials. Current methods to predict these quantities often utilize higher order laminate theories or zig-zag theories which can be computationally expensive, especially for a large number of laminae. In the present work a simple two layer zig-zag theory coupled with a novel repetitive methodology provides a simple method for accuratley predicting transverse stresss in alminates. The method is based on zig-zag theory's ability to accurately predict interface stresses. Since the solution for the structure is comprised of two layers, analytical expressions can be obtained. The method uses a known solution applied at different transverse locations in the problem to build the transverse stress distribution of the laminate. An example is presented showing excellent correlation with elasticity solutions. While the example is applied to beam structures, the methodology is also valid for beam plate and shell theories.
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