A Method of Sequentially Extracting Structural Contours
A technology for extracting structures and contours, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of cumbersome operation and large operation volume, and achieve the effect of saving operation time, reducing interference, and facilitating deformation analysis.
Active Publication Date: 2016-02-17
HARBIN INST OF TECH
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Problems solved by technology
In the commercial finite element software, if you want to retrieve the deformation of a certain section or a certain (or multiple) materials under a certain section, the operations in it are usually cumbersome and the amount of operation is huge
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[0015] 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.
[0016] In the finite element analysis, the node lists corresponding to the elements are arranged in a clockwise or counterclockwise direction, and in this embodiment it is assumed that they are arranged in a counterclockwise direction. In this embodiment, the unit number of the part that needs to be extracted from the contour and its corresponding node number information and geometric information will be read from the unit division information file of the finite element analysis, such as figure 2 As shown, the ones at the intersections are the node numbers, and the ones in the middle of the grid are the unit numbers. Dele...
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The invention provides a method for extracting structure outlines orderly, and relates to an extraction method for the structure outlines. The method for extracting the structure outlines orderly can be used for extracting the outlines in a pre-processing process and a post-processing process in finite element analysis. According to the method for extracting the structure outlines orderly, computer programming language Python is adopted to achieve the purpose of ordered extraction of structure outlines. The ordered extraction means that nodes in an obtained outline node list are arranged according to the connection order of the nodes on the outlines, and the nodes are connected in series to form a closed outline curve. On the basis of the ordered extraction, the extracted geometrical information of the outlines can be output to DXF files, the outlines can be analyzed further, and the outlines are parameterized and recognized. By means of the method for extracting the structure outlines orderly, two-dimensional finite element information is extracted, the structure outlines are extracted rapidly, and the deformation of the whole structure is analyzed conveniently. Further, by means of the method for extracting the structure outlines orderly, a great amount of operation time is saved, disturbance of other structure information is decreased, and the deformation condition of the structure parts is performed vividly and specifically.
Description
technical field [0001] The invention relates to a method for extracting structural outlines, which can be used for extracting ordered outline node numbers in pre-processing and post-processing of finite element analysis. Background technique [0002] In the finite element analysis of an object, in order to characterize the deformation of the whole object or a certain part of it during the loading process, although we can get a general understanding of its shape change by outputting the volume, we prefer to be able to Use a more intuitive way to display the changes of the object or a part of it. At this time, the usual method is to ignore the change of its internal deformation, and reflect its deformation process through the change of its outline. Therefore, it is necessary to extract effective geometric information of elements and nodes from the result data of finite element analysis to characterize the change process of its shape, that is, to extract the node number of its...
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IPC IPC(8): G06F17/50
Inventor 王友善吴健刘强粟本龙
Owner HARBIN INST OF TECH