Abstract
Shear-lead is the anti-shear-lag phenomenon named by prof. Tsuyoshi HAYASHI and means, in opposition to the shear-lag, that the stress level near loaded member is lower and one diffused into the structure is higher than a linearly distributed stress lervel predicted by the engineering theory. The main cause comes from that a concentrated load at the inner position of member is conveyed two ways, or, inward and outward.
The author reports the exact solution of an orthotropic (Ey=∞) plate with constant edge members loaded in the arbitrary distribution, especially by the inner concentrated forces, and test results of a stiffened plate box beam model loaded on the spar caps by concentrated axial forces that show good coincidence with the three concepts of theoretical analyses, namely, the above one, the shear field theory and the finite element method.
