Analysis and rheoforming numerical simulation method for alloy semi-solid rheoforming

A technology of semi-solid rheology and analysis method, applied in the direction of CAD numerical modeling, electrical digital data processing, special data processing applications, etc., can solve the problems of complex and unestablished rheological behavior of semi-solid metal paste, and achieve parameters Less, improve efficiency, reduce cost effect
CN113011056AActive Publication Date: 2021-06-22UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2021-06-22

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Abstract

The invention discloses an analysis and rheoforming numerical simulation method for alloy semi-solid rheoforming, the model is simple and accurate, has few parameters, can accurately reflect the relationship among temperature (solid fraction), shear rate and viscosity when the solid fraction of metal semi-solid slurry is less than 70%, and can accurately reflect The dynamic change condition of the viscosity in the non-Newtonian fluid flow shearing process. The viscosity model is coupled with a fluid mechanics and flow basic equation, a metal rheoforming process mathematical model is established, the mathematical model can be used for metal semi-solid rheoforming numerical simulation, semi-solid slurry flow characteristics, mold filling and solidification rules and defect prediction in the rheoforming process can be accurately obtained, in addition, optimization of the forming process and mold design is facilitated, and a good guiding effect is achieved on accurate control over the whole process of preparation, conveying and rheological forming of the semi-solid slurry.
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Description

technical field

[0001] The invention relates to a magnesium or aluminum alloy performance measurement technology, in particular to an alloy semi-solid rheological deformation analysis and rheological deformation numerical simulation method. Background technique

[0002] Semi-solid forming is an advanced metal forming technology. The forming process of semi-solid slurry under pressure is complex, and the development of numerical simulation technology for slurry flow and forming process is relatively late. Since the 1990s, scholars at home and abroad have carried out numerical simulations on the forming process of semi-solid metal paste. The use of numerical simulation is helpful to optimize the semi-solid metal forming process, mold design and defect prediction, and promote the research and application of semi-solid metal forming. At present, most of the simulations of the semi-solid forming process are based on some commercial finite element or finite difference software, s...

Claims

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