Grid parameterization-based structure multi-disciplinary design optimization method

An optimization approach, multidisciplinary technology

Inactive Publication Date: 2017-05-31
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

This optimization cycle has the following defects: 1) It has high requirements for the parametric design of the geometric model; and in view of the current generation method of the geometric model, it cannot guarantee that a reasonable geometric model can be generated, and in severe cases, it may even cause the model update to fail
2) It is difficult to ensure the quality of the re-divided grid, which causes the dr

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  • Grid parameterization-based structure multi-disciplinary design optimization method
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Embodiment Construction

[0026] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0027] This implementation case is aimed at the multidisciplinary design optimization of turbine blades involving aerodynamics, heat transfer, structure, strength and other disciplines, including the following steps:

[0028] Step 1: For figure 1 In terms of the multidisciplinary design optimization of the turbine blade shown, it involves aerodynamics, heat transfer, structure, and strength. The weight is the smallest, the average temperature of the blade is the smallest, etc., and the constraints are that the maximum stress and maximum deformation of the blade meet the design requirements. In addition, the blade flow-thermal coupling analysis model and the structural strength analysis model were established respectively, the aerodynamic characteristics and convective heat transfer of the blade were analyzed by the commercial computational fluid dynamics softwar...

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Abstract

The invention relates to a grid parameterization-based structure multi-disciplinary design optimization method. According to the method, analysis grids of all disciplines are parameterized by utilizing a grid deformation technique, and the consistency of grid changes of all the disciplines at a coupled interface is guaranteed; the multi-disciplinary design optimization of a structure is realized on the basis of grid parameterization, so that the problems caused by needing to regenerate a geometric model and divide grids during each time of optimization iteration in the traditional optimization design method are effectively avoided.

Description

technical field [0001] The invention relates to a structural multidisciplinary design optimization method based on grid parameterization, which belongs to the field of structural design. Background technique [0002] Multidisciplinary design optimization is an optimization design method developed in recent decades to solve coupling problems of multiple disciplines. Compared with the traditional single-subject serial design method, the coupling design between subjects is considered, which is more appropriate to the essence of the problem and has higher design accuracy; the multi-objective mechanism is used to balance the interaction between subjects, and the overall best design can be obtained. The waste of manpower, material resources and financial resources caused by repeated design is avoided; the collaborative / parallel design idea is introduced, which effectively improves the design efficiency. Due to the advantages shown by multidisciplinary design optimization, it has ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2111/06G06F2111/10
Inventor 李磊杨帆仝福娟张猛创唐仲豪岳珠峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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