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Optimal non-design space division method based on topological optimization variable density method

A technology of design space and topology optimization, applied in computing, image data processing, special data processing applications, etc., to achieve the effect of reliable iterative formula, reliable sensitivity, reducing computing time and iteration times

Inactive Publication Date: 2019-08-30
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these design space division methods are difficult to obtain the optimal design space so that the mass of the mechanical structure after topology optimization is the lightest.

Method used

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  • Optimal non-design space division method based on topological optimization variable density method
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  • Optimal non-design space division method based on topological optimization variable density method

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Embodiment Construction

[0026] The following will take the division of the topology optimization optimal non-design space of a simple cantilever beam as an example, and then further explain the invention patent.

[0027] as follows Figure 4 Shown is a two-dimensional plan view of a cantilever beam with a length of 75 mm, a width of 25 mm, and a height of 25 mm, with a Poisson’s ratio of 0.33 and a material density ρ 0 =2760kg / m 3 , its left end is fixed, a concentrated load F=1N is applied to its lower right corner, and the upper surface of the structure is reserved.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right" etc. are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the re...

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Abstract

The invention discloses an optimal non-design space division method based on a topological optimization variable density method and with the minimum mass as an optimization target. Through judgment oftopological optimization results under different non-design space volumes, the range where the non-design space volumes are located is shortened step by step, the lightest mechanical structure is obtained, and a mechanical structure topological optimization global optimal solution is obtained. The method can be suitable for dividing the optimal non-design space of most mechanical structures, theoriginal structure is directly converted into the final topological structure, the topological optimization efficiency is improved, and the design optimization time is shortened.

Description

technical field [0001] The invention relates to the field of mechanical structure topology optimization, in particular to an optimal non-design space division method based on topology optimization variable density method. Background technique [0002] With the continuous advancement of today's science and technology, the continuous improvement of the industrial level, and the continuous emergence of advanced manufacturing processes, such as 3D printing technology, etc., the mechanical structures originally obtained through traditional processing processes have greater optimization space and machinability. The topology optimization of the mechanical structure is mainly to divide the non-design space and the design space first, and then perform topology optimization. There are many ways to divide the design space at present, such as dividing the design space according to experience, and dividing the design space by means of response. However, these design space division metho...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00G06F30/17
Inventor 宋欣孔子成沈华
Owner HARBIN UNIV OF SCI & TECH