On the stress analysis of cross-ply laminated plates and shallow shell panels

摘要

This paper extends the appicabiltiy of a new stress anaysis method (Soldatos KP. Watson PA. Acta Mech 1997;123:163-186) towards the accurate prediction of stresses within cross-ply laminated doubly curved shell segments having a rectangular plan-form. The method is based on the successful incorporation of three-dimensional elasticity information for stress distributions into a two dimensional five-degrees-of-freedom shallow shell theory. This successful matching is achieved by means of a set of two shape functions, which are incorporate within the two-dimensioanl shell model whereas their form depends on the particualr problem considered. In the present case, two different sets of shape functions are developed and tested, one of which is more accurate than the other is, the later being however simpler than the former.