Cross-Sectional Properties of Thin-Walled Composite Beams
In the following tables a11 and d11 are the elements of the compliance matrix of symmetrical laminates (Eqs. 3.29 and 3.30) evaluated at the midsurface; αij, βij, δij are the elements of the compliance matrix of nonsymmetrical laminates (Eq. 3.23). These properties are evaluated at each wall segment’s “neutral” plane. In the main text these elements are identified by the superscript ϱ. To simplify the notation, in this Appendix the superscript ϱ is omitted.
The subscripts f1, f2, and w refer to flange 1, flange 2 and the web, respectively.
The modified material properties are ...