Influence of initial pressure on frequency characteristics of a rotating truncated circular conical shell

As a new global numerical approximate technique, the generalized differenti al quadrature (GDQ) method is used in this paper to study the influence of initial pressure load on the free vibration of a rotating thin isotropic tr uncated circular conical shell. The present motion governing equations incl ude the influence of initial stress field due to the initial uniform pressu re. The effects of initial hoop tension and the centrifugal and coriolis ac celerations due to rotation are also considered. The influence of initial p ressure on the frequency characteristics of the rotating conical shell is d iscussed in detail. For the examination of present work, frequency numerica l comparisons are made with those available in published works, and very go od agreement is achieved. (C) 1999 Published by Elsevier Science Ltd. All r ights reserved.