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

作者：Park Jang Min^*; Kwon Tai Hun

来源：Polymer Composites, 2011, 32(3): 427-437.

DOI：10.1002/pc.21061

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.

• 出版日期2011-3