Connection design method of multi-egg shaped bionic pressure shell

Abstract

The invention discloses a connection design method of a multi-egg shaped bionic pressure shell, and belongs to the technical field of diving equipment. The multi-egg shaped bionic pressure shell is formed by serially connecting a plurality of egg shaped pressure shells; an annular reinforcing rib is arranged at the connection part of every two adjacent egg shaped pressure shells. The connection design method comprises the steps of firstly obtaining a unit balance differential equation of each egg shaped shell through deducing a geometric equation and a physical equation of each egg shaped shell, so that each point deformation on each egg shaped shell is obtained; secondly obtaining the radial deformation of each annular reinforcing rib according to pressure suffered by the annular reinforcing rib at the corresponding connection part; lastly designing the parameters of the annular reinforcing rib according to a principle that the deformations of each egg shaped shell and the corresponding annular reinforcing rib at the corresponding connection part are identical, wherein the parameters comprise an outer diameter, an inner diameter and a width. Compared with the prior art, the design method disclosed by the invention can provide guidance to theoretical calculation and experiment design of the shells, can prevent the rigidity of the annular reinforcing ribs from being too large or insufficient, and can effectively guide the engineering design of the multi-egg shaped connected pressure shell.

Description

technical field [0001] The invention relates to a handover design method for a multi-egg-shaped bionic pressure-resistant shell, which belongs to the field of diving equipment design. Background technique [0002] Submersibles are important equipment for ocean exploration and deep-sea scientific research. As an important part of submersibles, pressure-resistant equipment plays a role in ensuring the normal operation of internal equipment and the health and safety of personnel during the dive process. [0003] Most of the active deep-sea pressure-resistant equipment is a single-spherical structure, and the limitation of the internal space can only be increased by increasing the radius of the sphere, which leads to the rapid development of multi-spherical structures. The multi-spherical structure expands the cabin space to a certain extent and improves the comfort of personnel, but it still cannot overcome the shortcomings of the spherical structure, such as high sensitivity t...

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Problems solved by technology

[0005] Purpose of the invention: Aiming at the deficiencies of the prior art, the present invention provides a multi-egg-shaped bionic pressure-resistant shell handover design method, which uses the radial deformation of the egg-shaped shell at the theoretical junction and the radial deformation of the annular reinforcing rib, Based on the principle of consistent deformation, the parameters of the annular stiffener at the junction can be designed to avoid excessive or insufficient stiffness of the annular stiffener, and can effectively guide the engineering design of the multi-egg-shaped junction pressure hull

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