Grid realization method for simulation and emulation of plate surfacing forming process

A forming process and realization method technology, applied in the field of virtual welding training, can solve the problem that the model cannot simulate the dynamic gradient process of molten pool and weld forming in real time, and achieve realistic simulation effect and stable operation

CN101719333AInactive Publication Date: 2010-06-02XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-06-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a grid realization method for simulation and emulation of a plate surfacing forming process on the basis of analyzing the disadvantages of a simulation and emulation method of the traditional plate surfacing molten pool and welding line forming process; in the method, comprehensive analysis is carried out to the plate surfacing molten pool and welding line forming process, a grid method in computer graphics is applied to simulation and emulation of the molten weld pool and the welding line formation, the OpenGL technology is utilized to construct a welding bead, a molten pool and a welding line model by taking a plane triangle grid as the basis; a Gauss heat source model is combined to obtain molten pool sinking and welding line surplus height growth function, and vertex movement of the triangle grid on the welding bead plane can be controlled on the basis of the function, so as to form a sunk grid molten pool and a grid welding line and effectively represent a practical scaly shaped welding line feature after being welded; after being test by actual operation, an integration system is operated stably and the simulation effect is vivid.
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Description

technical field

[0001] The invention belongs to the simulation and simulation of flat plate surfacing welding seam forming process in the field of virtual welding training, and in particular relates to a grid realization method for virtual flat plate surfacing welding forming process simulation and simulation. Background technique

[0002] With the development of computer and related technologies, it has become possible to introduce the virtual welding simulation training system into the traditional welding training process. The virtual welding simulation training system acts on the welding operator through the visual, auditory, and tactile senses during the welding process, so that it can produce an immersive sense of interaction. The system integrates computer graphics, image processing and pattern recognition, intelligent technology, sensor technology, language processing and audio technology, network technology and other disciplines, and is the further development and ap...

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038]The grid method is an important method of modeling in computer graphics. Each grid is a polygon. Using polygons to construct complex surfaces has unique advantages in modeling irregular surfaces. With the network The refinement of the grid can express the details of the entity delicately and achieve a better simulation effect. The mesh modeling method has strong adaptability and can truly express the details of the entity. Since any three points in space can define a plane, the polygon that is often selected is a triangle. During the welding process, the surface of the molten pool and the weld seam is a dynamically changing irregular surface, so the plane triangle mesh is used to model the weld bead, molten pool and weld seam.

[0039] Mesh-integrated model of weld bead, molten pool and weld seam

[0040] The mesh integration model of weld bead, molte...