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Computer Aided Design Environment for Composites (CADEC) 14.1.6392.14245

Software Support for Introduction to Composite Materials Design-- 2nd Edition, CRC (2011) by Ever J. Barbero

CADEC -- Ply Mechanics -- Plane Stress

The vast majority of composite material structures are built in the form of thin plates and shells. The main reasons for this are 1) that processing (fabrication) of bulky composites is difficult and costly and 2) that thin-walled structures resist loads in tension and compression, rather than bending. Since composites are very strong in tension and compression, it makes sense to make them thin. Also, thin-walled structures use less material, which saves cost and weight. So, a composite structure is lightweight not only because the density of the material is low but also because it is used efficiently in the form of a thin-walled structure. In chapter 5 (Ply Mechanics), the Plane Stress page links to pages for calculations using 3x3 compliance [S], 3x3 reduced stiffness [Q], 3x3 transformed compliance, and 3x3 transformed reduced stiffness.

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