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An Aeronautical Gear Based on Variable Density Lattice Structure and Its Design Method

A technology of lattice structure and design method, applied in design optimization/simulation, computer-aided design, calculation, etc., can solve the problems of large calculation variables and low efficiency, reduce design variables, meet working condition requirements, and improve optimization calculations efficiency effect

Active Publication Date: 2021-08-10
HUNAN IND POLYTECHNIC
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of aviation gear and its design method based on the variable density lattice structure, by constructing the variable density lattice filling function of the gear structure, the lattice structure is matched with the force condition of the gear, and the The problems of large calculation variables and low efficiency in the design of existing variable density lattice structure aviation gears

Method used

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  • An Aeronautical Gear Based on Variable Density Lattice Structure and Its Design Method
  • An Aeronautical Gear Based on Variable Density Lattice Structure and Its Design Method
  • An Aeronautical Gear Based on Variable Density Lattice Structure and Its Design Method

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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] It should be noted that the descriptions in the present invention such as "first", "second" and so on are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the pre...

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Abstract

The invention discloses an aviation gear based on a variable-density lattice structure and a design method thereof. The method comprises the following steps: constructing a variable-density lattice filling function of the gear structure; constructing a mixed finite element model of the variable-density lattice gear structure, and The gear structure is divided into a solid area and a variable-density lattice structure filling area, the solid area is filled with solid elements, and the lattice filled area is filled with beam elements; the second-order response surface model is constructed based on the finite element analysis results of the gear, and the response The multi-objective optimization design of the variable density lattice gear structure is carried out by the surface model. The design method provided by the present invention makes the lattice structure match the force condition of the gear by constructing the variable-density lattice filling function of the gear structure, and greatly reduces the design variables; meanwhile, the second-order response surface model is used instead of the finite element model to The multi-objective optimization of the gear structure improves the optimization calculation efficiency and meets the demanding working conditions of aviation gears.

Description

technical field [0001] The invention relates to the technical field of structural lightweight design, in particular to an aviation gear based on a variable-density lattice structure and a design method thereof. Background technique [0002] On the premise of satisfying the performance, lightweight structure has always been the goal pursued by aviation systems. Relevant studies have shown that a lighter overall structure can significantly improve the maneuverability, fuel and power density of the aircraft during flight. As one of the main parts of the aviation transmission system, the weight of the gear accounts for a large proportion in the entire transmission system, and its lightweight design can effectively reduce the weight of the aviation transmission system. Due to the limitation of traditional processing technology, the existing lightweight design of aviation gears is generally only carried out on macroscopic structures such as spokes, and the weight reduction effect...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17G06F30/15G06F111/06G06F113/10
CPCG06F30/15G06F30/17G06F30/23G06F2111/06G06F2113/10
Inventor 易辉成易杰唐锋
Owner HUNAN IND POLYTECHNIC
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