Generalized equilibrium equations for shell derived from a generalized variational principle

In this paper, the general equations of equilibrium for axisymmetrical deformation including the torsional deformation of shells with general forms are derived as stationary conditions of a generalized variational principle, which is established by the semi-inverse method. It shows that they are different from the results obtained by Chien (1990) in case of revolutional shell, therefore Chien's results can be further improved. (C) 2016 Elsevier Ltd. All rights reserved.