Abstract
This investigation consists in finding stresses and displacements produced by a rigid footing (or punch) at the plane boundary of a semi-infinite elastic solid. The proposed method is a combined application of electrical analog and finite-difference technique and can be applied to any arbitrary shape of rigid footing (or punch). The experimental setup is very simple and the numerical-analysis part is easily amenable to computer programming. The method has been exemplified by 3 cases: (1) rigid strip footing (or punch); (2) rigid circular footing (or punch); and (3) rigid square footing (or punch) on a three-dimensional semi-infinite solid. The results, wherever possible, have been compared with exact solutions and have been found to be in close agreement.
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