RATIONAL DESIGN OF A COMPOSITE BALLOON WITH A POLYMER LINER

В. С. Івановський, О. В. Івановська, С. В. Буркун

Abstract


The analysis of existing composite cylinders made by winding reinforcing materials on a polymer binder is carried out. The analysis showed that the design methods and manufacturing technology of cylindrical metal composite and composite cylinders are well developed, and the design and manufacturing technology of spherical balloon is based on an empirical approach. This is due to the fact that such cylinders are wound with a multiple family of layers in which reinforcing materials are laid at different angles to the axis of the cylinder. At the same time, the composite layer being created represents a statically indeterminate system, and it is impossible to design the thickness values of the reinforcing material in the layers without involving deformation equations.

The paper presents a method of designing a composite balloon with a polyethylene liner on the example of a specific design. The method consists in preliminary calculation of the thickness values of the reinforcing material of the spiral and annular layers for a cylindrical cylinder with a cylindrical part of zero length. Since it is impossible to wind a cylindrical layer on the surface of the ball, we distribute the resulting thickness of the annular layer evenly into multi-zone layers. At the next stage, we calculate the relative deformation of the reinforcing material in each layer in the direction of reinforcement and compare it with the permissible one, taking into account the safety factor. In those layers where the deformation is greater than the permissible one, we increase the thickness, and again we find the relative deformation. The calculation is repeated until the permissible relative deformation is reached in all layers. It should be noted that this technique makes it possible to obtain a design of a cylinder of minimal mass and can be used for the design of cylindrical metal-composite and composite cylinders with multi-zone winding of spiral layers

Keywords


composite materials; spherical balloon; liner; winding; zone; deformation; reinforcement angle; layer thickness; pressure; tape

References


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DOI: https://doi.org/10.32620/oikit.2023.97.02

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