Axisymmetric stresses in buried thin orthotropic cylindrical shells due to p-wave loading

Abstract

This paper is concerned with the study of stresses (axial and hoop) induced in a buried infinite orthotropic cylindrical shell, when it is excited by a p-wave travelling in the surrounding ground. A thin shell theory formulation has been used and only axisymmetric behaviour of the shell has been investigated. The shell is assumed to be perfectly bonded to the surrounding medium of infinite extent. The relative influence of the variation of orthotropy parameters on the stresses in the shell has been studied for different angles of incidence of the p-wave. Results have been obtained for different soil conditions-hard (rocky), medium hard and soft. It is realized that the stresses in the shell can be reduced quite considerably by adjusting the orthotropy parameters while designing the composite shells. © 1989.