MPH法を用いたセラミックシート成形シミュレーション

抄録

In the production of ceramics used for multilayer ceramic capacitors, it is important to produce sheets of uniform thickness during the molding process. However, the flow around blade edges during the spreading of ceramic paste by the blade method has not been well studied, leaving room for improvement in process design. In this study, we use the moving particle hydrodynamic method, which can simulate high-viscosity fluid while considering negative pressure. In order to visualize the internal flow of the material, we conducted a simulation of the blade edge during sheet forming considering surface tension and negative pressure. The result shows that the negative pressure, which causes tensile stress has appeared in the downstream of the blade, and the thickness of the film in the downstream becomes thinner than the gap between the blade and the bottom surface.