Gimbal ring structure lightweight design method suitable for additive manufacturing forming technology

Abstract

The invention discloses a gimbal ring structure lightweight design method suitable for an additive manufacturing forming technology. Structural characteristics, boundary conditions and stress workingconditions of a gimbal ring product are analyzed; an initial model suitable for gimbal topological optimization is established, and an optimization design area is determined; a gimbal optimal force transmission path and a material distribution initial model are obtained in combination with static optimization analysis, a design criterion considering a gimbal optimal topological structure and a good forming quality balance condition is provided, and a brand-new lightweight design model structure based on additive manufacturing is obtained.

Description

technical field [0001] The invention belongs to the field of metal manufacturing, and in particular relates to a lightweight design method for a gimbal ring structure suitable for additive manufacturing forming technology, in particular to a lightweight design method for frame-like load-bearing components formed by laser additive manufacturing technology. Background technique [0002] As the main load-bearing part of the gas rocking device of the liquid rocket engine, the gimbal ring can transmit the thrust vector and realize the rocking function. It has participated in the flight and launch missions of many types of Long March series rockets and has been successfully applied. The structural design of the new generation of liquid rocket engine is characterized by large size, integration and light weight. In order to meet the urgent need for weight reduction of rocket Quality, adopt a reasonable layout to avoid the increase of the overall height and mass of the engine, and re...

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Problems solved by technology

Currently, when the cross-section design and structural optimization of the gimbal ring are carried out, due to the limitation of the existing manufacturing process, the improvement plan is still designed based on "empirical" thinking, and structures such as weight-reducing holes, ribs, and welding patches are often used to reduce weight. Enhance the torsion and bending capacity, and then manufacture it by forging, welding, machining and other means. There are many processing procedures and long production cycle, and there may be welding deformation that affects the product qualification rate and reliability

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