西井 大樹 (Daiki NISHII)
Bending strain distribution on wide flanges does not become uniform because of the shear lag. An analytical approach with assumptions of the shear lag displacement on simple cross section was proposed. Authors have proposed semi-analytical approach to solve the shear lag problem with the help of the homogenized beam theory. In present study, we try to exploit the numerical result in order to improve accuracy of the semi-analytical approach. In addition, we propose a beam element considering shear lag effect. Consequently, an accurate shear lag analysis applicable to arbitrary frame structure has been established.
Key Words : periodic boundary condition, shear lag, homogenization method, finite element analysis