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Multi-component structural system distribution optimized design method based on KS function

A layout optimization and design method technology, applied in the direction of calculation, electrical digital data processing, special data processing applications, etc., can solve problems such as topology optimization problems that are difficult to carry out and difficult to converge

Inactive Publication Date: 2013-11-27
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

Such a large number of constraint equations makes topology optimization difficult to perform or difficult to converge

Method used

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  • Multi-component structural system distribution optimized design method based on KS function
  • Multi-component structural system distribution optimized design method based on KS function
  • Multi-component structural system distribution optimized design method based on KS function

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Embodiment Construction

[0031] refer to Figure 4-6 . The present invention is illustrated by taking a multi-component cantilever beam structure under a fixed load as an example. The structural size of the planar cantilever beam is 90mm long and 30mm high, and its Young's modulus is 7×10 10 Mpa, Poisson's ratio is 0.3. Four components are embedded in the cantilever beam structure, which are rectangular component, convex component, cross component and L-shaped component. The initial center position and initial direction of the rectangular component are (15, 15, 360); the initial center position and initial direction of the convex component are (35, 15, 360); the initial center position and initial direction of the cross-shaped component are (55 , 15, 360); the initial position and orientation of the center of the L-shaped component is (75, 15, 360). Dimensions of individual components refer to Figure 4 , the Young's modulus of each component is 2×10 11 Mpa, Poisson's ratio is 0.3. The load bou...

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Abstract

The invention discloses a multi-component structural system distribution optimized design method based on a KS function, which is used for solving the technical problem that the conventional multi-component structural system distribution optimized design method brings large quantities of constraint equations. The invention adopts the technical scheme that all the component interference constraint equations are integrated to one or more constraint equations, and in addition, the integrated constraint equations can satisfy constraint surely. The number of geometry constraint (i.e. constraint equations) in the multi-component structural system distribution optimized design can be greatly reduced. According to the embodiment of the multi-component structural system distribution optimized design of a suspension beam structure, four components are provided, the components 1-4 respectively use 2, 3, 1 and 3 circumcircle affinities, and a design domain edge uses 4 circumcircle affinities; by applying the method of citing reference, 30 constraint equations are needed to be led in, and the optimization can not be performed, while by applying the method, only 2 constraint equations are needed, and the optimization can be performed smoothly.

Description

technical field [0001] The invention relates to a layout optimization design method of a multi-component structure system, in particular to a KS function-based layout optimization design method of a multi-component structure system. Background technique [0002] refer to figure 1 . The multi-component structural system design pattern covers most industrial products, such as aerospace vehicles, ships, automobiles and machinery. Due to its complex service conditions and demanding performance requirements, the mechanical performance design of multi-component structural systems is particularly prominent in the field of aerospace vehicle structural design. Since both components and structures have their own mass and stiffness, the placement of components and the configuration of structures fundamentally determine the comprehensive mechanical properties of the structural system. In order to ensure the balance and stability of the aircraft and avoid damage to equipment or struct...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张卫红周莹谷小军张亚辉侯杰朱继宏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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