Multi-sphere storage tank structure parameter determination method considering weak correlation between multi-sphere storage tanks of spacecraft

Abstract

The invention discloses a multi-sphere storage tank structure parameter determination method considering weak correlation between multi-sphere storage tanks of a spacecraft, and the method comprises the steps: carrying out the preliminary design of a multi-sphere storage tank structure, and preliminarily determining the basic design parameters of the force transmission layout of a sphere structure; establishing a finite element model of the multi-sphere storage tank structure; analyzing an autonomous flight section internal pressure design working condition, an active section internal pressure, an axial pressure and shear force combined design working condition and a hoisting design working condition of the finite element model by applying a finite element method; extracting loads at the symmetrical boundaries in the working condition, if the loads at the symmetrical boundaries exceed the allowable loads, adjusting sphere structure design parameters, and if the loads at the boundaries meet the design requirements, completing design of the multi-sphere storage box structure, and storing basic design parameters of sphere structure force transmission layout to serve as final multi-sphere storage box structure parameters.

Description

technical field [0001] The invention relates to a method for determining structural parameters of multi-spherical storage tanks considering the weak correlation between multi-spherical storage tanks of space vehicles, and belongs to the technical field of space vehicle structure design. Background technique [0002] In the field of aerospace vehicle structural design, the distribution method of the internal load of the structure determines the specific plan of the structural design. By optimizing the design of the transfer method of the load, the load can be reasonably distributed to the bearing structure, which can make full use of the bearing potential of the material and reduce the aircraft structure. It is of great significance to ensure the load-carrying performance. [0003] The existing multi-sphere structure design methods for aerospace vehicles are generally designed for the overall structure, and less attention is paid to the interaction between the components of t...

AI Technical Summary

Problems solved by technology

[0003] The existing multi-sphere structure design methods for aerospace vehicles are generally designed for the overall structure, and less attention is paid to the interaction between the components of the overall structure. The components interact with each other, and the design correlation is strong. Verification has an important impact. Only the overall test verification of the whole device structure can be carried out, and the hierarchical verification of structural products cannot be realized, resulting in uncontrollable test risks. Failure of the test leads to repeated design, wasting financial and material resources

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