A multi-material continuum structure topology optimization design method based on an independent continuous mapping method

A topology optimization and design method technology, applied in computing, special data processing applications, instruments, etc., can solve the problems of non-convergence of analysis and low computing efficiency, and achieve the effect of saving design cost, improving work efficiency and strong adaptability

Pending Publication Date: 2019-05-07
BEIJING UNIV OF TECH
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Problems solved by technology

Overcome the deficiencies of existing technologies, such as analysis

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  • A multi-material continuum structure topology optimization design method based on an independent continuous mapping method
  • A multi-material continuum structure topology optimization design method based on an independent continuous mapping method
  • A multi-material continuum structure topology optimization design method based on an independent continuous mapping method

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[0023] Such as figure 1 As shown, the present invention provides a multi-material continuum structure topology optimization design method based on the independent continuous mapping method, and the specific solutions are as follows:

[0024] The first step is to determine the design parameters of the continuum structure, including setting the boundary conditions and loading conditions of the multi-material structure in the design domain, and assigning each material property to establish a finite element model of the multi-material continuum structure, and analyze the displacement of the structure . In addition, the present invention performs performance analysis on the structure based on the finite element analysis method, and uses the finite element grid to represent the smallest unit of the structure design, and the grid size can be determined according to the design requirements. According to the static equilibrium equation in the finite element method, the structural displace...

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Abstract

The invention discloses a multi-material continuum structure topology optimization design method based on an independent continuous mapping method. The multi-material continuum structure topology optimization design method comprises the following steps: (1) determining continuum structure design parameters including a design domain size, a structure boundary condition and an actual bearing condition; And (2) establishing an optimization model, wherein the optimization model comprises determination of an optimization target, a displacement constraint condition and a convergence criterion initial preset condition. (3) establishing a relationship between the independent topological variables and the constraint conditions and the optimization target, and performing standardization processing on the optimization equation; (4) solving the optimization equation, and updating the optimization column form based on a set iterative loop system and a set convergence condition; And (5) outputting an optimization result to obtain a multi-material structure optimal topological configuration and a structure weight fraction iteration curve. The invention provides a practical multi-material continuum structure design method, and aims to achieve the purpose of lightest structure weight under the condition of meeting the constraint condition of structure displacement. The method is of great significance in engineering practice.

Description

technical field [0001] The invention belongs to the technical field of engineering structure design, and in particular relates to a multi-material continuum structure topology optimization design method based on an independent continuous mapping method, which provides a new idea for the topology optimization of a multi-material continuum structure. Background technique [0002] As the pillar industry of my country's industrial development, the machinery manufacturing industry is directly related to and reflects the country's productivity level. Topology optimization is a type of structural optimization. It is a mathematical method to optimize material distribution in a given area according to given load conditions, constraints and performance indicators. Among structural optimization problems, compared with shape optimization and size optimization, topology optimization as a conceptual design stage has more degrees of freedom and can obtain a larger design space. It is wide...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 叶红玲戴宗杰王伟伟苏鹏飞隋允康
Owner BEIJING UNIV OF TECH
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