Abstract
The boundary element method (BEM) for thin elastic plate bending analysis uses two different integral equations for the displacement and the slope. It is difficult to integrate the integral equation for rotation accurately, because the equation has hyper-singularity. In the present paper, these boundary integral equations are nomalized by the superposition of the rigid rotation mode. Through some numerical results of square plates under several boundary conditions, it is shown that unknown nodal values along the boundary are more accurately obtained that those of the usual methods, and the accuracy of deflections, moments and shear forces at internal points has been clearly improved.
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