ABSTRACT
As described in Chapter 15, we consider here composite beams made of isotropic phases. Extrapolation to beams with transversely isotropic phases is straightforward. ”e study of orthotropic phases with one principal direction parallel to the axis of the beam, the other two principal directions variable in the plane of a cross section, does not present fundamental diªculties.*
16.1 Uniform Torsion We will keep the conventions and notations of the previous chapter. In Figure 16.1, O is the elastic center and (y, z) are the principal axes. ”e beam is slender and uniformly twisted, that is, every cross section is subjected to a pure and constant torsion moment, along the x-axis, denoted as Mx.
