Numerical Analysis for Sandwich Plates by Difference Method : 1st Report, Analysis of Flexure Problems

Abstract

Although a great many investigations for the strength and the stiffness of the flat sandwich plates have been reported, most of them show only the basic equations or the solutions which are applicable only to certain particular cases. In the present paper, we extend Hoff's energy method to the case of the cylindrical coordinates with the view of applying to the circular and sectorial plates, and on the other hand we propose to apply the difference method to the present problem in order to treat the plates with the arbitrary forms of the boundaries under the arbitrary loads and the mixed boundary conditions. The numerical calculations were worked out for the deflections and the stresses of several plates. From these results, it has been shown that our calculations coincide fairly well with our experiments and also coincide with the results obtained by means of the other theories.