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Metal structure optimization design method

An optimized design and metal structure technology, applied in the field of computer simulation, can solve the problems of time-consuming and labor-intensive pre-processing, difficulty in ensuring accuracy, and affecting the efficiency of optimization analysis, etc.

Pending Publication Date: 2020-02-25
上海波客实业有限公司
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Problems solved by technology

Pre-processing is time-consuming and laborious, and it is difficult to ensure accuracy, which affects the efficiency of optimization analysis
[0004] The following problems still exist in the current metal structure optimization design method: the optimization object is only suitable for thin-walled plate or stiffened plate structure, and there are not enough response constraints that can be considered, which will affect the efficiency of the optimization method to a certain extent

Method used

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Embodiment Construction

[0085] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0086] The invention is mainly developed through the Python language, develops a 3D graphics engine based on VTK, and develops a graphic interface based on wxPython, so as to realize the optimal design of the metal structure.

[0087] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0088] like figure 1 As shown, the embodiment of the present ...

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Abstract

The invention relates to the technical field of computer simulation, in particular to a metal structure optimization design method which comprises the following steps: defining a design variable; defining a response constraint; defining a target function; outputting an optimization solution file; submitting to an optimization solver for calculation; judging whether constraint conditions are met ornot; if yes, extracting an optimization result, and completing optimization; and if not, adjusting the design variable and the response constraint, and restarting the operation in the step 1. According to the invention, dimension optimization can be carried out on the thickness of the two-dimensional unit skin, the sectional dimensions of the frame, the beam, the stringer and other one-dimensional units; the design requirements of displacement, stress, strain, stability, section rigidity, area ratio, process constraints and the like are considered, a solving file is automatically generated and submitted to an OptiStrut or Nastran solver for optimization calculation, and an optimization result is subjected to rapid post-processing. According to the embodiment of the invention, the metal structure optimization pretreatment efficiency is improved, and the research and development period is shortened.

Description

technical field [0001] The invention relates to the technical field of computer simulation, and in particular to a metal structure optimization design method. Background technique [0002] In product development, in order to meet the weight, strength and stiffness requirements and reduce development risks, optimized design is widely used in its structural design stage. In optimization design, the definition of design variables and the creation of constraint equations are the most critical processes in the entire optimization process. [0003] Metal siding structures are widely used in aerospace structures, and due to their structural characteristics, there are many constraints on strength, stiffness, and stability. Preprocessing is time-consuming and labor-intensive, and it is difficult to ensure accuracy, which affects the efficiency of optimized analysis. [0004] There are still the following problems in the current metal structure optimization design method: the optimi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17
Inventor 张攀雷咸强
Owner 上海波客实业有限公司
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