Finite-element-analysis based visual simulation method and system for bridge collapse

A visual simulation and finite element technology, applied in image data processing, special data processing applications, animation production, etc., can solve problems such as difficult to achieve rendering speed, poor model realism, and unusable wreckage, etc., to achieve good realism and Real-time, the effect of making up for incomplete graphics

Active Publication Date: 2013-07-10
TSINGHUA UNIV
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Problems solved by technology

However, a large number of invisible failure elements caused severe incompleteness of the wreckage graphics in the finite element analysis and could not be used for wreckage comparison
In addition, finite element analysis

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  • Finite-element-analysis based visual simulation method and system for bridge collapse
  • Finite-element-analysis based visual simulation method and system for bridge collapse
  • Finite-element-analysis based visual simulation method and system for bridge collapse

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

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Abstract

The invention provides a finite-element-analysis based visual simulation method and system for bridge collapse, wherein the method comprises the following steps: acquiring bridge model data, bridge distortion data and failure element data through finite element analysis; creating a bridge visual model having a sense of reality according to the bridge model data; implementing bridge collapse distortion animation of a callback mechanism by using the bridge distortion data; creating a fragment graph model on the basis of the failure element data; creating an efficient fragment calculation model according to the fragment graph model; updating the fragment graph model in real time according to the data calculated by a fragment to form fragment motion animation; and combining the bridge distortion animation with the fragment motion animation to form a complete bridge collapse visual simulation process. According to the method provided by the embodiment of the invention, the bridge collapse visual simulation has complete fragment information, the graph incompleteness caused by a failure element in the finite element analysis is made up, and the visual simulation process has good sense of reality and real-time performance.

Description

technical field [0001] The invention relates to the application field of computer technology in bridge engineering, in particular to a visual simulation method and system for bridge collapse based on finite element analysis. Background technique [0002] As an important lifeline project, the collapse accidents of bridges often cause serious casualties and property losses. [0003] The finite element analysis of bridge collapse is a common method in the identification of bridge collapse accidents. In the case of collapse, finite element analysis often produces a large number of failed elements. However, once the element fails, it will no longer participate in subsequent finite element calculations, lacking subsequent calculation data, and will become invisible on the graph. Due to these invisible failure elements, the FEA results of bridges are very incomplete. In the identification of bridge collapse accidents, the comparison between the simulation results and the wreckag...

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Application Information

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IPC IPC(8): G06F17/50G06T13/00
Inventor 许镇陆新征任爱珠
Owner TSINGHUA UNIV
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