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A structural topology optimization solving method based on resampled particle swarm optimization

A particle swarm optimization and topology optimization technology, which is applied in the computer field and can solve problems such as being prone to falling into local optimal solutions.

Inactive Publication Date: 2019-03-08
BEIHANG UNIV
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Problems solved by technology

However, the particle swarm method also has obvious problems, that is, it is easy to fall into a local optimal solution when solving complex multimodal problems.

Method used

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  • A structural topology optimization solving method based on resampled particle swarm optimization
  • A structural topology optimization solving method based on resampled particle swarm optimization
  • A structural topology optimization solving method based on resampled particle swarm optimization

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Embodiment Construction

[0075] The following is a further description of this method in conjunction with the accompanying drawings and two structural topology optimization examples. In order to reflect the advantages of this method in solving ability, the genetic optimization method or traditional particle swarm optimization method is also used for the same example. Compare.

[0076] The present invention proposes a method for solving structural topology optimization problems based on resampling particle swarm optimization. The main process of this method is shown in figure 1 , see the specific flow of the resampling process figure 2 , the resampling particle swarm optimization process is as follows image 3 As shown, the calculation example is as follows:

[0077] Example 1 , nine-bar truss structure

[0078] The nine-bar truss structure is attached Figure 4 As shown, there are nine design variables in this problem, and the structural symmetry relationship needs to be maintained in addition ...

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Abstract

The invention provides a structural topology optimization solving method based on resampling particle swarm optimization, which can realize the topology optimization of structural topology optimization problem and has higher solving efficiency. The method comprises the main steps of 1 establishing the optimization model of the topology optimization problem; 2 establihsing the fitness function of the topology optimization problem; 3 utilzing the resample particle swarm optimization to solve that problem accord to the fitness function; 4 obtaining the optimal value of the objective function according to the optimal solution. The method can effectively solve the structural topology optimization problem. For that same topology optimization problem, after comparing with the traditional particleswarm optimization and the genetic optimization, the method of the invention can prove that the method in the invention can obtain a better optimization result, has high solving efficiency, and has advantages in stability of the result of multiple solving. The method is simple, practical and easy to implement, and has the value of popularization and application.

Description

technical field [0001] The invention relates to a structure topology optimization solution method based on resampling particle swarm optimization. Compared with other algorithms, the structure topology optimization design can be performed better, and belongs to the field of computer technology. Background technique [0002] The basic concept of structural topology optimization is to determine the interconnection mode of structural components, whether there are holes in the structure, the number and location of holes, etc. under the given design space, support conditions, load conditions and certain process design requirements. Form, so that the structure can transmit the external load to the support, and at the same time optimize a certain performance index of the structure. This process is called structural topology optimization, which is a type of structural optimization. Compared with size optimization and shape optimization, topology optimization has a higher degree of d...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06N3/00
CPCG06N3/006G06Q10/04
Inventor 王晓慧陈皓月谷浩然
Owner BEIHANG UNIV
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