Numerical simulation method of complex profile extrusion process

A numerical simulation and extrusion process technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of frequent re-division of grids, self-contact of welding surfaces, etc., to reduce the simulation operation time and computer Effects on system resource usage

Inactive Publication Date: 2018-06-29
GRIMAT ENG INST CO LTD
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Problems solved by technology

[0007] The purpose of the present invention is to provide a numerical simulation method for the extrusion process of a large-section and complex-section profile splitting die, so as to solve the unavoidable frequent re-division of the grid and the self-contact of the welding surface the puzzle

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  • Numerical simulation method of complex profile extrusion process
  • Numerical simulation method of complex profile extrusion process
  • Numerical simulation method of complex profile extrusion process

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Embodiment 1

[0032] A numerical simulation method for the extrusion process of complex profiles. The complex profiles are large flat, wide and thin-walled hollow profiles, and their cross-sections are as follows: figure 2 As shown, the width is 557mm, the height is 60mm, and the cross-sectional area is 59.88cm 2 .

[0033] Such as figure 1 As shown, it is a flow chart of the finite element step-by-step method in the numerical simulation method of the complex profile extrusion process of the present invention.

[0034] A numerical simulation method for complex profile extrusion process, the steps are as follows:

[0035] 1. Before the simulation, first use the 3D CAD software to establish the 3D solid models of the billet, the shunt combined mold, and the thimble. The thimble in the extrusion system is a component that generates motion by applying the billet, which can be simplified as a cylindrical rigid surface. Structural elements irrelevant to analysis, such as screw holes, can be o...

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Abstract

The invention relates to a numerical simulation method of a complex profile extrusion process, and belongs to the technical field of metal extrusion processing. The method comprises the steps of 1, adopting CAD software to establish a three-dimensional geometric model of a mold and a blank, and inputting the three-dimensional geometric model to a simulated system; 2, in the shunt period of profileextrusion, adopting a fractional step finite element method to conduct numerical simulation; 3, in the welding and shaping periods of the profile extrusion, adopting a finite volume method based on aEuler network to conduct numerical simulation; 4, if profile completely flows out of a work belt and the extrusion process reaches a steady state, completing a whole simulation process, otherwise repeating step 3 until the steady state is reached. The numerical simulation method of the complex profile extrusion process has the advantages of being short in calculation time and high in simulation precision, and is a highly effective method for researching the extrusion process of large complex cross-section profile.

Description

technical field [0001] The invention relates to a numerical simulation method for the extrusion process of complex profiles, in particular to a numerical simulation method for the extrusion process of a split-flow die for large-section and complex-section profiles, and belongs to the technical field of metal extrusion processing. Background technique [0002] The manufacturing technology of large and complex section profiles represents the highest level of current light alloy profile processing technology. With the rapid development of high-speed trains, urban subways, aerospace, ship weapons, and machinery manufacturing industries, the demand for light alloy profiles with large and complex cross-sections is increasing rapidly. The large-scale profiles and structural integration can bring huge economic benefits. and social benefits. [0003] Mold design and manufacturing technology is the key technology for the production of large-section and complex-section aluminum profil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 程磊肖伟王建伟黄国杰王立根
Owner GRIMAT ENG INST CO LTD
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