Reserch Projects
EElectrostatic coating
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Coating is one of the indispensable processes in manufacturing products, and electrostatic coating is expected as a new coating method. In electrostatic coating, high voltage is applied between the nozzle to which the coat is supplied and the target, and the coat is atomized by the electrostatic force and sprayed toward the target. This method can spray more uniform fine particles than the conventional air spray method. However, since electrostatic coating is a complicated phenomenon in which large electric fields interact with large deformations and splits of fluids, the detailed mechanism has not yet been clarified. In this study, in order to clarify the electrostatic coating mechanism, we are developing a numerical analysis method that combines fluid analysis by the particle method and magnetic field analysis by the mesh-free method. |
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EInjection molding analysis
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Bonded magnets are magnets made by mixing resin with magnets obtained by crushing ferrite magnets. A feature of injection molding is that it has a large degree of freedom in shape.Therefore, if a bond magnet is actually injection molded, the density and magnetic properties of the molded product may vary, and the design requirements may not be met. This is due to the complicated process in which multiple molding processes such as injection, compression, magnetization, cooling and hardening proceed almost simultaneously. In this study, we are developing a numerical analysis method to clarify the injection molding process of bonded magnets by coupling magnetic moment method to magnetic field analysis and MPS to fluid analysis and thermal analysis. |
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ECompression molding analysis
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The compression molding of bonded magnets is extremely complicated because the magnetic field, heat, resin state, and magnetic powder behavior interact, and the molding parameters of bonded magnets are set empirically. As a result, current molded products have the problem that the density distribution and magnetic properties within the molded product vary. In this study, we are developing a numerical analysis method that can consider all physical phenomena in the molding process in compression molding of bonded magnets. |
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ECold crucible dissolution methodEelectromagnetic suspension
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The cold crucible melting method is a melting method that uses a water-cooled crucible made of copper or the like instead of a refractory crucible made of ceramics or the like when melting metals. The feature is that the molten metal is less susceptible to contamination from the crucible and can dissolve active metals and refractory metals, but the disadvantage is that the phenomenon that occurs during melting is complicated and the fluid behavior is difficult to control. Therefore, we aim to clarify the details of the phenomenon that occurs during melting and improve the cold crucible melting method by analyzing the fluid behavior using a coupled analysis of the particle method and the finite element method. |
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EMagnetic fluid analysis
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Magnetic fluid is a fluid that responds to a magnetic field, and it is known that the surface deforms in a spike shape along the lines of magnetic force. In order to support the design of devices that use magnetic fluid, we are working on a numerical method that can analyze the behavior of this magnetic fluid.In order to express a more realistic magnetic fluid model, the solute magnetic powder and solvent are modeled. In this research, fluid-magnetic coupled analysis is performed using the mesh-free method and the moment method. |
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