Daniltsev V. The Strength of fiberglass constructions with interlaminar structure defects of the material

A number of important scientific and technical tasks has been solved in this dis-sertation, including the justification of the models and methods of calculation of the stressed and strained state as well as the thermoelastic state of layered rotation shells with interlaminar structure defects. The method of the integral thermoelastic characteristics of layered structure composite determination has been developed and tested; the algorithm of the thermal linear extention and thermal conductivity of layered anisotropic material coefficient definition was suggested. The thermoelastic strained state of multilayer rotation shells has been determined. The problem of the structural strength has been solved and the technique of de-termining the maximum internal pressure of multi-layered cylindrical shells has been invented; the stress state of the GRP pipes in flange, bandage and socket joint areas has been studied. Using the modified polynomial strength criterion, the critical pressure values, at which the rupture occurs at the points of GRP pipes surface contact with metal flang-es, have been calculated.