A Fast Extraction Method of Finite Element Node Coordinates

An extraction method, finite element technology, applied in the field of rapid extraction of finite element node coordinates, can solve problems such as reducing work efficiency

Active Publication Date: 2020-02-18
哈尔滨泰铭科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of ensuring that the grid is not very sparse, an ordinary tire contains at least 3000 nodes, which need to be manually extracted, and the time for extracting nodes occupies at least 40% of the pre-processing time, and this repetitive Work will make people feel irritable, which further reduces work efficiency

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  • A Fast Extraction Method of Finite Element Node Coordinates
  • A Fast Extraction Method of Finite Element Node Coordinates
  • A Fast Extraction Method of Finite Element Node Coordinates

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0050] by figure 1 As the initial geometric model of this embodiment, according to the implementation steps of the present invention, at first the geometric model is manually divided into grids in CAD software, divided into triangular or quadrilateral units, such as figure 2 shown. In order to better identify the intersection point, the model line segment of the boundary is extended. At the same time, the original model line is black and the grid line is red. Save the area where the entire model grid is located as an image in .jpg format with a resolution of 96dpi.

[0051] Use Matlab language to read the image and obta...

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Abstract

The invention discloses a fast finite element node coordinate extracting method. under CAD graphic software, a two-dimensional geometric model is manually divided into grids, the original model and grid lines are different in color, a picture of the model obtained after grid division is captured, original model lines are recognized through image processing, grid lines are recognized again, the two images are stacked, relative positions between all nodes are determined by recognizing the change of pixel values, and true node coordinates are obtained through coordinate transformation. Intersection points can be extracted from the model conveniently, and the finite element preprocessing efficiency is greatly improved.

Description

technical field [0001] The invention relates to a method for quickly extracting finite element node coordinates, which belongs to the technical field of tire finite element analysis preprocessing. Background technique [0002] Finite element analysis is one of the trends in tire research in recent years, and major tire companies and research institutes are all committed to this research. For example, the patent CN200710194353X of Sumitomo Rubber Industries Co., Ltd. provides a tire model modeling method and simulation method; Michelin's patent US2008 / 064527 uses finite element analysis or thermocouple probes to determine the vulcanization limit part of the tire or tread; Korea The patent CN2011102066300 of Tire Co., Ltd. analyzes the forming method of the tire section through finite element analysis, etc. [0003] The node is the basis of the finite element model, and extracting the node coordinates of the model is one of the main contents of the finite element preprocessin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/12
CPCG06F30/23
Inventor 王友善崔志博吴健粟本龙
Owner 哈尔滨泰铭科技有限公司
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