2021 Volume 77 Issue 1 Pages 1-11
Shear lag and transverse shear in beams have been studied separately so far. The research on shear lag has taken cross-sectional deformation into account since its early stage. On the other hand, most of the research on transverse shear has devoted itself to determine the shear correction factor and has rarely considered the cross-sectional deformation. The authors have developed a beam theory that explicitly takes into account the cross-sectional deformation of transverse shear. On the basis of this theory, this paper proposes a beam theory that can take into account the cross-sectional deformations due to shear lag and transverse shear in a unified manner. A numerical method for determining the cross-sectional parameters required for the proposed beam theory is presented and comparison of solutions of the proposed theory with finite element solutions using continuum elements confirms the validity of the proposed beam theory.
