A visual method of finite element analysis of launch vehicle structure based on vtk

A launch vehicle and finite element technology, applied in sustainable transportation, design optimization/simulation, geometric CAD, etc., can solve the problem of rough animation display effect of modal vibration shapes, poor rendering effect, difficulty in analyzing modal vibration shapes, etc. problems, to achieve improved observation angles, realistic rendering effects, and easy integration and calling

Active Publication Date: 2022-03-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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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; (2) The modal vibration animation display effect is too rough, making it difficult to analyze Mode shape; (3) It is not easy to be integrated in the finite element analysis software platform of the launch vehicle structure

Method used

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  • A visual method of finite element analysis of launch vehicle structure based on vtk
  • A visual method of finite element analysis of launch vehicle structure based on vtk
  • A visual method of finite element analysis of launch vehicle structure based on vtk

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Embodiment 1

[0089] Beam - - node included in the model rocket shell, beam element and shell element and shell element model rocket enlarged view of quality as used in the present embodiment in embodiment Figure 11 , Figure 12 Indicated.

[0090] One kind of the disclosed embodiment of the present embodiment visualization methods Finite element analysis of the launch vehicle structure on VTK, specific implementation steps are as follows,

[0091] Step 1: Finite element model rocket read file, finite element analysis results file, and acquires the relevant data stored in the class.

[0092] In this embodiment, quality - Beam - Modal Analysis rocket shell model using finite element analysis software NASTRAN software, file format which is a finite element model .bdf file, the file format of the finite element analysis is .f06 file, respectively second and third data format described in the foregoing, specific examples are set forth format figure 2 and image 3 Indicated.

[0093] Reads the model f...

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Abstract

The invention discloses a VTK-based finite element analysis visualization method for a launch vehicle structure, in particular relates to a C# and VTK combined C# and VTK combined launch vehicle structure finite element modal analysis result visualization method, which belongs to the field of launch vehicle structure finite element analysis visualization. The present invention reads the finite element model file and the finite element analysis result file of the launch vehicle, obtains and stores relevant data in the corresponding class, and sets four coefficients k1, k2, k3 and k4; then create a new canvas or call related functions to clean up all the graphics on the canvas, and continuously call the function of drawing the launch vehicle model and the function of clearing all the graphics on the canvas to display the mode shape animation until the number of cycles reaches the preset value; This method can provide strong support for the application of the structural design, vibration control, and load analysis of the launch vehicle structure, and solve practical engineering technical problems in the corresponding fields.

Description

Technical field [0001] The present invention relates to a method of visualization of a la carting rocket structure, in particular to a C # and VTK (visualization toolkit THE VISUALIZATION Toolkit) combined transport rocket structure finite element modal analysis results visualization method, belongs to the finite element analysis of carrier rocket structure Visualization area. Background technique [0002] The launch vehicle is used as a aircraft that gives all kinds of space spacecraft into space, which mainly includes an arrow body, a power unit system, and a control system. Among them, the arrow is a matrix carrying a rocket, which is self-evident for the importance of carrier rockets. Therefore, a series of analyzes is made necessary for the arrow structure. Among them, modal analysis is one of the methods of studying structural dynamic characteristics, mainly used to analyze modal parameters such as inherent frequency, damping ratio and modal vibration. Using the modal analy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/12G06F30/23
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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