Nonisothermal Transient Filling Simulation of Fiber Suspended Viscoelastic Liquid in a Center-Gated Disk

Title
Nonisothermal Transient Filling Simulation of Fiber Suspended Viscoelastic Liquid in a Center-Gated Disk
Author(s)
박장민권태헌[권태헌]
Keywords
SIMPLE INJECTION MOLDINGS; ORIENTATION; SUSPENSIONS; FLOW; CLOSURE; MEDIA; MODEL; COMPOSITES; RHEOLOGY; BEHAVIOR
Issue Date
201103
Publisher
WILEY-BLACKWELL PUBLISHING, INC
Citation
POLYMER COMPOSITES, v.32, no.3, pp.427 - 437
Abstract
The present study numerically investigates a fiber orientation in injection-molded short fiber reinforced thermoplastic composite by using a rheological model, which includes the nonlinear viscoelasticity of polymer and the anisotropic effect of fiber in the total stress. A nonisothermal transient-filling process for a center-gated disk geometry is analyzed by a finite element method using a discrete-elastic-viscous split stress formulation with a matrix logarithm for the viscoelastic fluid flow and a streamline upwind Petrov-Galerkin method for convection-dominated problems. The numerical analysis result is compared to the experimental data available in the literature in terms of the fiber orientation in center-gated disk. The effects of the fiber coupling and the slow-orientation kinetics of the fiber are discussed. Also, the effect of the injection-molding processing condition is discussed by varying the filling time and the mold temperature. POLYM. COMPOS., 32:427-437, 2011. (C) 2010 Society of Plastics Engineers
URI
http://hdl.handle.net/YU.REPOSITORY/25532http://dx.doi.org/10.1002/pc.21061
ISSN
0272-8397
Appears in Collections:
공과대학 > 기계공학부 > Articles
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