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A Fusion Method for Heterogeneous Models of Complex Products

A technology of heterogeneous models and fusion methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of difficult integration and fusion of heterogeneous system models

Active Publication Date: 2018-06-01
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a complex product heterogeneous model fusion method to solve the problem of difficult integration and fusion of complex product heterogeneous system models, provide an effective way for product multi-disciplinary multi-performance analysis and evaluation, and can effectively improve complex products Design efficiency, shorten complex product development cycle, greatly improve product competitiveness

Method used

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  • A Fusion Method for Heterogeneous Models of Complex Products
  • A Fusion Method for Heterogeneous Models of Complex Products
  • A Fusion Method for Heterogeneous Models of Complex Products

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Embodiment 1

[0089] Figure 4 The result of fusing dovetail information on the upper surface of the fandisk model.

[0090] in Figure 4 (a) is the dovetail groove point cloud model in the heterogeneous system, Figure 4 (b) is the basic volume model expressed by voxels, and each basic unit vertex on it contains distance field attributes. In this paper, the distance field information of the voxel model is displayed by horizontal and vertical sections, and the results are as follows Figure 4 As shown in (d) and (e), the lighter color in the middle part of the picture indicates the interior of the model, the darker color around the picture indicates the exterior of the model, and the other colors are the intermediate transition part, that is, the surface boundary.

[0091] By discretizing the dovetail groove information voxels, then initializing the distance field attributes, and using the static distance field difference set operation, the dovetail groove information can be fused to the ...

Embodiment 2

[0095] Blade design involves multiple disciplines such as solid modeling, surface modeling, structural statics, modal analysis, fluid dynamics, and heat and mass transfer. When analyzing the aerodynamic performance of the blade, only the overall shape of the blade needs to be considered; when analyzing the heat dissipation performance of the blade, the distribution and number of cooling holes and grooves in the model need to be considered; when analyzing the anti-leakage performance of the blade, the Need to consider end profile groove feature. Therefore, it is necessary to build a variety of models with different structural characteristics during the simulation analysis of blade products. In addition, there are a large number of processing measurement point cloud models and structural topology optimization models, which constitute the blade heterogeneous model system library.

[0096] The present invention takes the fusion of heterogeneous models in blade design as an example...

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Abstract

The invention discloses a complex product heterogeneous model fusing method. The method is mainly prepared through the following steps of firstly, extracting geometric feature and processing shape and position error information of a product model at different stages; secondly, establishing a voxel model of product uniform expression through a voxelization method; thirdly, establishing mapping of distance field intersection, subtraction and complementation operation and speed field operation functions and heterogeneous model primitive feature, shape and position error and high-grade feature operation; fourthly, fusing product heterogeneous primitive feature and processing shape and position error information into the voxel model; fifthly, reestablishing a voxel model surface model through a movable cuboid method so that the visual expression of the fused model can be achieved. The unified framework of product heterogeneous information processing is provided, heterogeneous model fusing integration and uniform visual expression in different CAX systems are achieved, the effective approach of product multi-major and multi-performance analysis and evaluation is provided, complex product design efficiency can be effectively improved, the complex product development cycle can be shortened, and product competitiveness can be greatly improved.

Description

technical field [0001] The invention belongs to a product digital geometric modeling method, in particular to a complex product heterogeneous model fusion method. Background technique [0002] In the process of product design and manufacturing, various modeling, simulation and analysis systems such as CAD, CAM and CAE need to be used, which will generate a large number of product digital models with partial information. However, the unique requirements of each system in a single field and the difficulty in unifying the commercial system software format standards make it difficult to fuse and integrate a large number of heterogeneous model information for a single part product. [0003] Currently, researchers mainly use file format unification and geometric feature processing to realize heterogeneous system model integration. The file format unification method mainly realizes heterogeneous model transformation and system integration through standard file format parsing and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/367
Inventor 易兵杨岳李雄兵刘冲高广军田红旗
Owner CENT SOUTH UNIV
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