Non-axisymmetric dynamic response of buried orthotropic cylindrical shells

Abstract

This paper deals with the non-axisymmetric dynamic behaviour of buried orthotropic cylindrical shells excited by a combination of P-, SV- and SH-waves. Numerical results have been presented for the case of an incident plane longitudinal wave (P-wave) only. The flexural mode response has been compared with that of the axisymmetric mode. It has been found that, depending upon soil condition and apparent wave speed, shell deformations in the flexural mode may be even greater than in the axisymmetric mode. Also, the shell response is found to be significantly influenced by variations in the shell orthotropy parameters and by the soil condition around the shell. © 1988 Academic Press Limited.