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A multi-objective optimization method for load-bearing and thermal protection structures of micro-truss structures

A thermal protection structure, multi-objective optimization technology, applied in multi-objective optimization, design optimization/simulation, instruments, etc., to achieve the effect of small calculation amount, guaranteed stability, simple and effective method

Inactive Publication Date: 2020-09-29
BEIHANG UNIV +2
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Problems solved by technology

The traditional structural configuration and its structural design and calculation methods have been difficult to meet the stringent requirements of the new aircraft for the continuous improvement of the performance of the airframe platform. Therefore, it is urgent to break through the original structural form and design method, and adopt an innovative and comprehensive consideration of load / heat. Multifunctional structure with performance requirements such as protection

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  • A multi-objective optimization method for load-bearing and thermal protection structures of micro-truss structures
  • A multi-objective optimization method for load-bearing and thermal protection structures of micro-truss structures
  • A multi-objective optimization method for load-bearing and thermal protection structures of micro-truss structures

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The present invention provides a multi-objective optimization method for a micro-truss structure bearing and thermal protection structure, which will be described below by taking the optimization design of the heat transfer and load-bearing multifunctional integrated structure of the wing leading edge of a micro-truss sandwich structure as an example. The overall method flow of this example is as follows figure 1 Shown, each step is described as follows in conjunction with embodiment below:

[0029] (1) Design the initial micro-truss topology and the periodic unit cells of the basic shape before structural optimization according to the structural conditions. Specifically: This example is based on the micro-truss sandwich structure, combined with design requirements and working conditions for structural design. Such as Figur...

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Abstract

The invention discloses a micro-truss structure carrying and thermal protection structure multi-objective optimization method, and belongs to the field of spacecraft instrumentation overall design andmultifunctional structure material design. A flow channel is introduced into a micro-truss sandwich structure, multi-objective optimization of temperature and stress is realized by thermal transfer and force transfer coupling calculation, and final design meets a design process and the lightest front edge structure of a design boundary. The problem of thermal mechanical coupling under practical working conditions is taken into full consideration, the influence of the temperature on strength is introduced, processing technology boundary conditions are considered, and optimum structural designis realized by an optimization algorithm. The method is simple and effective, optimum design can be realized by small calculated amount, and time and cost consumed by trial and errors are greatly reduced.

Description

technical field [0001] The invention relates to a method for multi-objective optimization design of a micro-truss structure containing flow channels for heat transfer and load-carrying, and belongs to the field of overall design of aviation vehicles and multi-functional structural material design; specifically, it is a micro-truss structure A multi-objective optimization method for load-bearing and thermally protected structures. Background technique [0002] In order to meet the complex and harsh flight environment, new aircraft usually require reducing the structural weight as much as possible and overcoming the problem of aerodynamic heating. Therefore, structural materials with light weight, high temperature resistance / heat protection, high strength and low density are particularly critical for the development of new aircraft (especially new aircraft and aerospace aircraft that are reused). The traditional aircraft structure design idea considers the structural system a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/15G06F111/06G06F119/14G06F119/08
CPCG06F30/15G06F30/23G06F2111/06G06F2119/06G06F2119/08
Inventor 关志东王晓东王垚黎增山苏亚东
Owner BEIHANG UNIV
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