VTK-based carrier rocket structural finite element analysis visualization method

A launch vehicle, finite element technology, applied in sustainable transportation, design optimization/simulation, special data processing applications, etc., can solve the problems of poor rendering effect, rough modal animation display effect, and difficult integration.

Active Publication Date: 2018-11-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0011] The following technical problems exist in the field of visualization of finite element analysis results of launch vehicle structures: (1) The rendering effect of finite element elements in the model is not realistic;

Method used

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  • VTK-based carrier rocket structural finite element analysis visualization method
  • VTK-based carrier rocket structural finite element analysis visualization method
  • VTK-based carrier rocket structural finite element analysis visualization method

Examples

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Example Embodiment

[0088] Example 1:

[0089] The mass-beam-shell launch vehicle model used in this embodiment includes nodes, beam elements, and shell elements. The enlarged view of the launch vehicle model and shell element is as follows Picture 11 , Picture 12 Shown.

[0090] This embodiment discloses a VTK-based finite element analysis visualization method of the launch vehicle structure. The specific implementation steps are as follows:

[0091] Step 1: Read the finite element model file of the launch vehicle and the finite element analysis result file, obtain and store the relevant data in the class.

[0092] In this embodiment, the finite element analysis software used for the modal analysis of the mass-beam-shell launch vehicle model is NASTRAN software, and the format of the finite element model file is .bdf file, and the format of the finite element analysis result file is .f06 The files correspond to the second and third data formats introduced in the previous article. The specific format e...

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Abstract

The invention discloses a VTK-based carrier rocket structural finite element analysis visualization method and particularly relates to a C# and VTK united carrier rocket structural finite element modal analysis result visualization method and belongs to the field of visualization of finite element analysis of carrier rocket structures. According to the method, relevant data are acquired and storedin corresponding categories by reading a finite element model file and a finite element analysis result file of a carrier rocket, and four coefficients k1, k2, k3 and k4 are set in order to achieve modal shape animation control of a user; soon afterwards, a new canvas is created or relevant functions are called to clear all the graphics on the canvas, and modal shape animations are displayed by cyclically and continuously calling a function of drawing a carrier rocket model and clearing the functions of all the graphics on the canvas until a cycle index reaches a preset value. By adopting themethod, powerful support is provided for application on the aspects of structure design, vibration control, load analysis and the like of the carrier rocket structure, and the technical problems of practical engineering in the corresponding fields are solved.

Description

technical field [0001] The present invention relates to a kind of visualization method of launch vehicle structure finite element analysis, in particular to a kind of C# and VTK (Visualization Toolkit The Visualization Toolkit) joint launch vehicle structure finite element modal analysis result visualization method, which belongs to launch vehicle structure finite element analysis field of visualization. Background technique [0002] As a vehicle for sending various space spacecraft into space, a launch vehicle mainly includes a rocket body, a power plant system, and a control system. Among them, the rocket body is the base body of the launch vehicle, and its importance to the launch vehicle is self-evident. Therefore, it is necessary to conduct a series of analyzes on the rocket body structure. Among them, modal analysis, as one of the methods to study the dynamic characteristics of structures, is mainly used to analyze modal parameters such as natural frequency, damping ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23Y02T90/00
Inventor 贺媛媛郭达维刘莉王强袁赫
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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