Design method of large caliber optics telescope four way structure and obtained four way structure

Abstract

The invention discloses a design method of a large caliber optics telescope four way structure and the obtained four way structure, relates to the machinery industry photoelectric instrument field, and solves the problems that an existing design method of an existing four way structure is long in product design period and the existing four way structure is low in structure lightweight rate. The design method of the large caliber optics telescope four way structure includes steps: building a four way structure initialization geometric model of the large caliber optics telescope four way structure, using a finite element method to build a finite element simulation model of the large caliber optics telescope four way structure in dispersion mode, using four way material distribution as an optimization design variable and setting reduction of the weight of the existing four way structure as an optimization objective under an optimization constraint condition which meets displacement deformation, using a topological optimization method to perform weight reduction optimization on the finite element simulation model, performing distribution design on a shell plate, an inner rib plate and an inner circle plate and confirming the initial thicknesses of the shell plate, the inner rib plate and the inner circle plate, using the initial thicknesses of the shell plate, the inner rib plate and the inner circle plate as another optimization design variable to perform the weight reduction optimization twice, and performing rigidity performance analysis verification to obtain the lightweight four way structure which meets performance constraint. The maximum deformation value of the obtained four way structure is 0.0698mm, and less than the maximum design deformation value 0.08mm, and the weight of the obtained four way structure is reduced from 122.217t to 13.776t, and furthermore the lightweight rate of the obtained four way structure reaches 89%.

Description

technical field [0001] The invention relates to the technical field of optoelectronic instruments in the mechanical industry, in particular to a design method for a four-way structure of a large-aperture optical telescope and the obtained four-way structure. Background technique [0002] Large-aperture optical telescopes are one of the important technical means for the detection of deep space objects in the universe. The pursuit of large field of view and high resolution makes the telescope aperture larger and larger, and the size of the tracking frame increases accordingly. The existing tracking Racks tend to be bulky, expensive, and difficult to control. [0003] As an important supporting part of the tracking frame, the four-way structure carries the components of the primary mirror chamber and the secondary mirror chamber. Its weight reduction design is of great significance to the entire telescope system. The design method of the existing four-way structure is as follo...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of long product design cycle and low structure lightweight rate existing in the design method of the existing four-way structure, the present invention provides a design method for the four-way structure of a large-aperture optical telescope realized through topology optimization and size optimization and the resulting four-way structure

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