Комп’ютерне моделювання анізотропних оболонок у ПК «AUTODESK INVENTOR»

Abstract. A numerical experiment was conducted to investigate the behaviour of structurally anisotropic structures under the influence of a uniformly distributed load and a concentrated load of 1 t/m2. To study the stress-strain state of the elements, a safe space was proposed in the form of a structurally anisotropic shell measuring 9 m x 9 m with a concrete ribs pitch of 1 m with polystyrene foam inserts and a structurally anisotropic shell measuring 9 m x 9 m with a metal sheet in the lower belt. Goal. The goal is to create a scientifically based calculation of structurally anisotropic structures in the Autodesk Inventor software package. To achieve this goal, the task was established as follows: to develop calculations of the stress-strain state of structurally anisotropic structures in the form of a 9m x 9m shell. At the same time, the energy criterion was applied to the rationalization of the external structural parameters of reinforced concrete structurally anisotropic shells. Originality. According to the results of the study, it was determined that (for the specific conditions considered) at H ≈ 3.8 m, the potential energy of deformation reaches its minimum. The study incorporated the relationship of rational parameters in a structurally anisotropic shell between the DER of the system of external and internal rational parameters: at a rib pitch close to l ≈ 1000 mm, the DER reaches the lower limit. A numerical experiment on the behavior of a structurally anisotropic structure under the influence of a uniformly distributed load and a concentrated load of 1 t/m2 was performed. The object of the study is the properties of anisotropic shell structures in the context of small architectural forms. Methodology. Research methods are the finite element method in numerical modeling of the work of the structure, as well as classical and numerical methods of mechanics of a deformable solid. Practical value. Design of the design of the middle of built enclosed spaces of small architectural forms, and even small ground-based modular shelters for the protection of people in large towns in Vibukhov hills and fragmentation shells for placement on transport links, near parks, in squares and other open places, the presence of people in populated areas and territories of hostilities is on the clock