“…where I I y ¼ R A z 2 dA, E is Young's modulus, n is Poisson's ratio, and K s is the Timoshenko shear coefficient, which is introduced as a correction factor to account for the non-uniformity of the shear strain over the beam cross-section (e.g., Kaneko, 1975;Stephen and Levinson, 1979;Jensen, 1983;Wang, 1995;Hutchinson, 2001). Note that in reaching Eqs.…”