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Layout optimization design method of multi-component structural system based on multi-point constraints

A multi-point constraint and design method technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as low efficiency, achieve the effects of shortening time, improving efficiency, and reducing the total number of units

Active Publication Date: 2016-02-24
陕西翱翔天宇新材料科技有限公司
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Problems solved by technology

[0005] In order to overcome the inefficiency of the existing multi-component structure system layout optimization design method, the present invention provides a multi-component structure system layout optimization design method based on multi-point constraints

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  • Layout optimization design method of multi-component structural system based on multi-point constraints
  • Layout optimization design method of multi-component structural system based on multi-point constraints
  • Layout optimization design method of multi-component structural system based on multi-point constraints

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Embodiment Construction

[0031] refer to Figure 2-4 . The multi-component structural system layout optimization design method based on multi-point constraints in the present invention specifically includes the following steps.

[0032] The size of the topological design domain 5 of the two-dimensional support structure is 1.8m in length, 0.6m in height, and 0.01m in thickness, and it is divided into 2700 shell elements, so the number of topology design variables is 2700. Two identical rectangular components 6 are both 0.24m in length, 0.12m in height and 0.01m in thickness. The upper right end of the support structure and the upper end are fixed to the right third. The x-direction initial position coordinates of the two components 6 are 0.6m and 1.2m respectively, the y-direction initial position coordinates are both 0.3m, and the initial angle is 0 degrees, and are connected to the topology design domain 5 through the node at the connection position 7. At the same time, optimize the design of the...

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Abstract

The invention discloses a multi-assembly structure system layout optimization design method based on multipoint restriction. The method is used for solving the technical problem of low efficiency of the existing multi-assembly structure system layout optimization design method. The method has the technical scheme that an assembly and structure finite element model is built, a multipoint restriction method is used for building the connection relationship between the assembly and the structure, a problem optimization mathematical model is created for realizing the structure system finite element analysis and sensitivity information solving, and finally, the optimization is carried out to obtain the reasonable results. Because the multipoint restriction technology is introduced for building the connection relationship between the assembly and the support structure, the structure lattice re-division near the assembly is avoided, the time required by preprocesing of the finite element model is reduced, in addition, the total unit number of the whole finite element model is also reduced, and the time required by the finite element analysis calculation is shortened. The time required by the whole optimization process is shortened from 20 minutes and 46 seconds in the prior art into 5 minutes and 13 seconds for the layout optimization design of a two-dimensional supporting multi-assembly structure system.

Description

technical field [0001] The invention relates to a layout optimization design method of a multi-component structure system. In particular, it relates to a multi-component structural system layout optimization design method based on multi-point constraints. Background technique [0002] There are a large number of multi-component structural system design problems in aerospace, shipbuilding, automotive and other fields. Due to 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 the components and the supporting structure have their own mechanical properties, the placement of the components and the configuration of the structure fundamentally determine the comprehensive mechanical properties of the structural system. In order to improve the overall stiffness of the structural system, it is necessary to ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 朱继宏高欢欢张卫红谷小军
Owner 陕西翱翔天宇新材料科技有限公司
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