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A microstructure product multi-component topology optimization design, processing method and system

A technology of topology optimization and design method, applied in the direction of geometric CAD, etc., can solve problems such as low calculation efficiency, existence of connection parts of microstructure units, failure to consider physical properties of connection parts of components and constraints of manufacturing process, etc., to achieve low manpower and material resources consumption, The effect of meeting the size constraints of equipment and meeting the requirements of high-precision machining

Active Publication Date: 2021-11-30
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing multi-component topology optimization method is mainly aimed at the optimization of solid components, and it is directly applied to large components composed of microstructures, which will have the following problems: the microstructure may be divided into multiple components during processing, resulting in There are huge challenges in the connection of microstructural units of multiple components
At the same time, the current multi-component topology optimization method based on the gradient method does not consider the physical properties of the component connection part and the constraints of the manufacturing process. Very low, unable to meet the requirements of thousands or even hundreds of thousands of millions of design variable optimization

Method used

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  • A microstructure product multi-component topology optimization design, processing method and system
  • A microstructure product multi-component topology optimization design, processing method and system
  • A microstructure product multi-component topology optimization design, processing method and system

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Embodiment 1

[0092] The present embodiment discloses a multi-component product microstructure topology optimization method, comprising the steps of:

[0093] A step, provided topology optimization design domain [Omega]; constructing a pseudo-density design variable (geometric topology design variables) φ, φ is a continuous function of the design domain [Omega], [Phi] value at each position in the design of the design domain [Omega], respectively at respective positions within the domain Ω material whether arranged, -1≤φ≤1; multi-component design vector construct ([mu] 1 Μ 2 , ...., μ k , ...., μ K ), Where μ k Indicates the design variable of the king of the king, μ k Continuous function in design domain Ω, μ k Values ​​at each location in the design area Ω respectively indicate the possibility of the corresponding position within the design domain Ω, 0 ≤ μ k ≤1, k = 1,2, ...., K, K is the design domain is divided into the maximum number of (artificial setting) component; final optimized desig...

Embodiment 2

[0151] The present embodiment discloses a multi-component product microstructure processing method, comprising the steps of:

[0152] Step i, using micro-architectural design method of multi-component Topology Optimization in Example 1, the solved φ, μ k The optimal value, and its corresponding dummy density design variable ρ, variable M k , Average dummy density design variable ρ l Parameter Ω k ;

[0153] Step ii, the mathematical model of each component constituting the microstructure is obtained according to the following formula:

[0154] C k = ΡM k + g (ρ l (1-m k ) Ω k

[0155] Where C k Represents the kth component constituting the microstructure;

[0156] Step iii, all components are processed in accordance with the mathematical model of each component of the microstructure;

[0157] Step IV, assemble each component to obtain a microstructured product.

Embodiment 3

[0159] The present embodiment discloses a multi-component product microstructure topology optimization design system including a memory and a processor, the memory stores a computer program, the computer program when executed by the processor, cause the processor to implement in the above-described Example 1 multi-component product microstructure topology optimization method.

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Abstract

The invention discloses a multi-component topology optimization design, processing method and system of a microstructure product, which constructs a pseudo-density design variable φ and a multi-component design vector (μ 1 ,μ 2 ,…,μ k ,…,μ K ), taking the minimization of compliance as the objective function, considering the volume ratio constraints of materials used, the size constraints of each component, the local average density constraints, the multi-component entity interface and the connection part volume constraints; solving the objective function, we get φ, μ k The optimal value of ; according to φ, μ k The optimal value of is used to determine whether to arrange materials at each position in the design domain Ω, and the microstructure product model is composed of all parts of the design domain Ω where materials are arranged. In the design process of microstructure products, the present invention considers the dimensional constraints of processing methods in the process of processing microstructure products, the assembly and connection methods of components, and the physical properties of component connection parts. It is an integrated method of design and manufacturing, which can meet the high Precision machining requirements.

Description

Technical field [0001] The present invention belongs to topology optimization, microstructured product design processing, functional gradient microstructure, design and manufacturing integration, and 3D printing field, specific to a microstructured product multi-component topology optimization design, processing method and system. Background technique [0002] Microstructure not only has the characteristics of excellent print performance, but also achieves multi-functional ratio, zero thermal expansion, high cooling ratio and performance ratio, and frequency band sound absorption performance and optical guidance, so it is in automobile, ship, train And the needs of industrial applications in the fields of aerospace. [0003] The design method of the existing microstructured product (microstructure, including the microstructure) is mainly by designing the microstructure unit, and then the finite element simulation analysis is used by adding a periodic boundary condition, ultimatel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17
Inventor 易兵彭勇姚松李雄兵杨岳汪馗李盈利饶燕妮
Owner CENT SOUTH UNIV
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