Three-dimensional visualization simulation method directed at boundary element analysis

Abstract

The invention discloses a three-dimensional visualization simulation method directed at boundary element analysis. The three-dimensional visualization simulation method comprises reading in result documents output after the boundary element analysis; establishing vertex buffers and index buffers, and recording node coordinate information and node numerical value information into the vertex buffers and unit organization information into the index buffers to generate grid models, entity models, cloud models and reference coordinate systems; and performing rendering, three-dimensional operation or other operation synchronously on the models and the reference coordinate systems. The method processes the result documents after the boundary element analysis, only fundamental information of construction models and clouds is needed to be input, no special requirement exists for formats, and common business engineering software of Ansys, Patran, Sesam and the like can be used for providing input information. The method has a flexible processing mechanism, wide applicability and good practical engineering application values.

Description

technical field [0001] The invention relates to a method for performing three-dimensional visual simulation on a pair of boundary element analysis processing results. Background technique [0002] In the field of engineering, it is often necessary to use finite element method or boundary element analysis method to realize the solution and analysis of discrete modules in complex systems, and the 3D visualization simulation method provides an interactive means for technicians to study and analyze results. [0003] The basic solution idea of ​​the finite element method is to divide the calculation domain into a finite number of non-overlapping units. In each unit, some suitable nodes are selected as the interpolation points of the solution function, and the variables in the differential equation are rewritten as The linear expression composed of the node value of its derivative and the selected interpolation function, with the help of the variational principle or weighted resid...

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Problems solved by technology

[0005] 1. The boundary element analysis method divides the model mesh into triangular units, and the finite element analysis has many types of units. Therefore, the fast generation algorithm established by the above method is not the best for the processing results after the boundary element analysis. optimized

[0006] 2. The above method does not consider the establishment of the grid model, solid model and cloud image model under a single model when generating the 3D model, which cannot meet the complete functional requirements of post-processing 3D visualization

[0007] 3. The above method simply considers the generation of the model, but does not conduct relevant research on the 3D operation of the model, and cannot meet the user's requirements for viewing the model as a whole, zooming in on the model, etc. in the post-processing stage.

In addition, there is a lack of functions such as orientation indication of the current model coordinate system (establishment of the reference coordinate system), quick view switching, etc.

[0008] 4. The above method does not provide functions such as screen capture, cloud map numerical information display, and computer display status display. The display of model geometric information and numerical information is not enough, and the application field is relatively limited.

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