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A method to obtain new lattice structure based on firefly algorithm

A firefly algorithm and lattice structure technology, which is applied in the field of obtaining new lattice material structures based on the firefly algorithm, can solve the problems that the mechanical properties cannot reach the best and other problems.

Active Publication Date: 2021-03-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the unit cell structure of the lattice structure is manufactured by simulating the molecular lattice configuration, but because different molecular structures have different advantages and disadvantages, the mechanical properties cannot reach the best

Method used

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  • A method to obtain new lattice structure based on firefly algorithm
  • A method to obtain new lattice structure based on firefly algorithm
  • A method to obtain new lattice structure based on firefly algorithm

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Experimental program
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Embodiment Construction

[0027] The method for obtaining a novel lattice structure based on the firefly algorithm of the present embodiment includes the following steps,

[0028] s1: if figure 1 As shown, build a cube with 8 vertices D k (k=1,2...,8), six face center points S j (j=1,2...,6) and a body center point B, the base structure connected by discrete rod elements between any two nodes. Because in the porous foam structure, when there are straight rods running through the whole model, the elastic modulus of the model has a linear relationship with the relative density, so that the longitudinal tension and compression become the only deformation forms, so most porous foams do not contain Straight bars, allowing the bending deformation of the beam to play a role. The base structure selected in this paper does not consider the horizontal bar and the vertical bar. On the basis of the base structure, the optimization algorithm selects the minimum section of each member or deletes unnecessary memb...

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Abstract

The invention discloses a firefly algorithm-based novel dot matrix structure obtaining method. The method comprises the following steps of s1: establishing a base structure of a dot matrix structure;and s2: establishing a mathematic model taking a section area of a bar unit in the base structure as a design variable, taking an axial force of a bar member as a constraint function and taking a minimum volume as an evaluation function, and obtaining an optimal dot matrix structure under a certain constraint condition by adopting a firefly algorithm. According to the method, a simulated molecularconfiguration is not adopted for manufacturing a porous material, and a base structure method is adopted as a topology generation method of a bar system structure to be combined with the firefly algorithm to finish structure topology optimization, so that a lightweight and high-strength dot matrix material is obtained.

Description

technical field [0001] The invention relates to a method for a novel lattice structure, in particular to a method for obtaining a novel lattice material structure based on a firefly algorithm. Background technique [0002] The configuration design of the lattice structure is the most basic work in the study of the lattice structure, which will directly affect the preparation method used later and what kind of mechanical properties and special functions it has. At present, the unit cell structure of the lattice structure is manufactured by simulating the molecular lattice configuration, but because different molecular structures have different advantages and disadvantages, the mechanical properties cannot reach the best. Moreover, when the parent material and the processing parameters are the same, the lattice materials with different microstructure configurations have different mechanical properties. Contents of the invention [0003] In view of this, the present inventio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06N3/00G06F119/14
CPCG06N3/004G06F30/20G06F2119/06
Inventor 柏龙张俊芳陈晓红易长炎龙樟
Owner CHONGQING UNIV