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Genetic algorithm optimization method of fiber-reinforced pressure container shell laying structure

A technology of pressure vessel and optimization method, which is applied in the fields of instrumentation, calculation, special data processing application, etc., can solve the problems that the quality of the solution cannot be guaranteed, is not suitable for large-scale optimization, and has low calculation efficiency, achieves fast global search, and solves immature solutions. Convergence problem, the effect of good local optimization ability

Inactive Publication Date: 2013-09-18
INNER MONGOLIA JINGANG HEAVY IND
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Problems solved by technology

Enumeration method is a traversal search method of solution space, including dynamic programming method, implicit enumeration method and complete enumeration method, etc. It is characterized by finding the global optimal solution of the problem, but the calculation efficiency is too low to be suitable Solving large optimization problems
The random search method randomly selects a certain number of points in the solution space and then optimizes them, which has a certain degree of blindness. It cannot guarantee the quality of the solution for complex problems, and its computational efficiency is basically equivalent to that of the enumeration method.

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  • Genetic algorithm optimization method of fiber-reinforced pressure container shell laying structure
  • Genetic algorithm optimization method of fiber-reinforced pressure container shell laying structure
  • Genetic algorithm optimization method of fiber-reinforced pressure container shell laying structure

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0023] The genetic algorithm optimization method of a fiber-reinforced pressure vessel shell lay-up structure described in the present invention aims at the discrete characteristics of the laminated structure parameters of composite materials. After studying the optimization mechanism of the genetic algorithm, the improved genetic algorithm is applied to the Carbon fiber pressure vessel shell layup structure (including carbon fiber pressure vessel shell layup, carbon fiber pressure vessel head layup and carbon fiber pressure vessel shell opening place layup), the strength optimization design of the layup was carried out, and the layup was obtained. The ply optimization results provide an important way and direction for improving the ply structure design of carbon fiber pressure vessel shells.

[0024] In the genetic algorithm optimization design o...

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Abstract

The invention discloses a genetic algorithm optimization method of a fiber-reinforced pressure container shell laying structure. An integer coding strategy suitable for the genetic algorithm optimization method of the fiber-reinforced pressure container shell laying structure is provided, and structure parameters of the fiber-reinforced pressure container shell laying structure are expressed by integer encodes. In addition, on the basis of deep research on fiber-reinforced pressure container shell laying theories as well as analysis on strength of the fiber-reinforced pressure container shell laying structure, fitness functions capable of being used in a genetic algorithm can be created aiming at structural strength optimization; certain laying principles are for reference, laying angles are limited to be four angles (0 degree, + / -45 degrees and 90 degrees) frequently used in projects, load results calculated by ANSYS software are applied, laying optimization design is performed on each primary portion of a fiber-reinforced pressure container shell by the genetic algorithm, and then an optimal laying result of each primary portion of the fiber-reinforced pressure container shell is acquired.

Description

technical field [0001] The invention belongs to the field of structural mechanics of composite materials, and relates to a genetic algorithm optimization method for the layer structure of a fiber-reinforced pressure vessel shell. Based on an improved genetic algorithm, the layer-up optimization calculation is performed, and combined with Ansys software to further analyze the structure of the fiber-reinforced pressure vessel shell. Laminate structural properties. Background technique [0002] The optimization design of composite material structure is not only a very basic research work, but also a highly applied technical work, because it not only involves mathematical modeling, mechanical modeling, optimization methods, numerical solution technology, but also involves To the selection of the best structural scheme and research results in other fields of composite materials. The ultimate goal of many researches on composite materials and structures is more reasonable structu...

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Application Information

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IPC IPC(8): G06N3/12G06F17/50
Inventor 冯消冰
Owner INNER MONGOLIA JINGANG HEAVY IND
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