ДОСЛІДЖЕННЯ НАПРУЖЕНО-ДЕФОРМОВАНОГО СТАНУ ПАЛИВНОГО БАКА ВАФЕЛЬНОЇ КОНСТРУКЦІЇ РАКЕТИ-НОСІЯ

Calculations of the stress-strain state of the wafer-type fuel tanks of launch vehicles were carried out in order to predict their carrying capacity. We used software developed on the basis of the finite element method, which allows analyzing the thermally stressed state of structures in a three-dimensional formulation. When constructing the design model, the design features of the fuel tank were taken into account. Studies of the stress-strain state of the tank with regard to plastic deformations were carried out. It is established that the calculated values of destructive loads are in many respects determined by the diagrams of elastoplastic deformation of the tank material. It is expedient to carry out further studies to account for the influence of operational and design factors on the carrying capacity of the fuel tank.