Strength and reliability of cylindrical shells prepared by the method of continuous filament winding

1. Strength calculation of shells whose material has a scatter in elastic and strength characteristics should be carried out using statistical methods. A deterministic calculation using values of elastic and strength characteristics leads to appreciable errors in the estimate of bearing ability. 2. The problems of estimating the strength and the reliability of constructions from laminar composites are closely interconnected. 3. Physicomechanical characteristics of a material which have been obtained in tests of unidirectional specimens make it possible to describe the behavior of a construction on the condition that the structure of the shell layer material is reduced to the structure of the specimen material. 4. Allowing for the scale effect plays an important role in estimating the reliability and bearing ability of heavy-duty shells for large-size pressure vessels.