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Viscoelastic Simulation of Deformation-Induced Bubble Coalescence in Foaming Process
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2005
Nihon Reoroji Gakkaishi
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Viscoelastic simulations of deformation-induced bubble coalescence in forming process under isothermal condition were carried out. Multi mode PTT model was used in a simplified model for deformation of Polypropylene(PP) melt between bubbles in plane strain. 2-Dimentional Lagrangian FEM was adopted in the unsteady creeping flow simulation. The numerical results demonstrates that the thinnest part between neighboring gas bubbles is easily deformable and consequently coalescence occurs. Still
doi:10.1678/rheology.33.9
fatcat:jgpnmtc3incljbamjisvcbndw4