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A topology optimization design method for periodic multi-material structures

A topology optimization and design method technology, applied in design optimization/simulation, calculation, instrumentation, etc., can solve problems such as increasing the calculation cost of optimization programs

Active Publication Date: 2019-03-08
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Although the introduction of additional constraints such as nonlinear diffusion techniques, Harveyside mapping, and Cahn–Hilliard models can significantly overcome these drawbacks, it undoubtedly increases the computational cost of the entire optimization program

Method used

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  • A topology optimization design method for periodic multi-material structures
  • A topology optimization design method for periodic multi-material structures
  • A topology optimization design method for periodic multi-material structures

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0050] figure 1 It is a flowchart of a topology optimization design method for a periodic multi-material structure provided by an embodiment of the present invention.

[0051] (1) Given the design domain, construct a topology optimization model of periodic multi-material structures based on the bidirectional asymptotic structural optimization method (abbreviation: BESO method);

[0052] Based ...

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Abstract

The invention discloses a topology optimization design method of a periodic multi-material structure, belonging to the technical field of structure optimization. Based on the bi-directional asymptoticstructure optimization method, the topology optimization model of periodic multi-material structure is constructed. By defining the initialization parameters, setting the material transformation rules, solving the sensitivity number and optimizing the structure, cyclic iteration is carried out according to the target volume and the final convergence condition of each material, thus completing thetopology optimization design of periodic multi-material structure. This method can make the designed macrostructure not only possess the regularity of periodic structure, has many advantages, such asorderliness, aesthetics, good workmanship and so on, also has many composite characteristics, such as high strength, anti-corrosion, anti-fatigue, high wear resistance, strong insulation and lightweight, and can be widely used in aerospace vehicle, weapon equipment, high-speed rail transit and construction machinery and so on.

Description

technical field [0001] The invention belongs to the technical field of structure optimization, and more specifically relates to a topology optimization design method of a periodic multi-material structure. Background technique [0002] Multi-material structures are composed of two or more solid materials, and usually have excellent composite properties such as high strength, corrosion resistance, fatigue resistance, high wear resistance, strong heat insulation and light weight, so multi-material structures have a wide range of applications Background, especially suitable for occasions with high comprehensive performance requirements such as aerospace, aircraft and advanced weaponry. The periodic structure presents a certain regularity and orderliness macroscopically, and has significant advantages such as beautiful appearance, low manufacturing cost, good workmanship and easy modular assembly. It is especially suitable for all kinds of crane girders, various bridges and A s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 高亮许洁郑永锋肖蜜李好李培根
Owner HUAZHONG UNIV OF SCI & TECH
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