Numerical simulation of three-dimensional fiber orientation in injection molding including fountain flow effect

2002 ◽  
Vol 23 (2) ◽  
pp. 222-238 ◽  
Author(s):  
Kyeong-Hee Han ◽  
Yong-Taek Im
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Fiber Orientation ◽  
Three Dimensional ◽  
Flow Effect ◽  
Fountain Flow

Measurement and numerical simulation of three-dimensional fiber orientation states in injection-molded short-fiber-reinforced plastics

2003 ◽  
Vol 88 (2) ◽  
pp. 500-509 ◽  
Author(s):  
Kwang Seok Lee ◽  
Seok Won Lee ◽  
Kwansoo Chung ◽  
Tae Jin Kang ◽  
Jae Ryoun Youn
Keyword(s):  
Numerical Simulation ◽  
Fiber Orientation ◽  
Three Dimensional ◽  
Short Fiber ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Injection Molded ◽  
Fiber Reinforced Plastics

scholarly journals Three-dimensional Fiber Orientation of FRTP Obtained by Injection Molding —Detailed Analyses on the Fiber Orientation of a Thin Plate at the exit of a Pinpoint Gate—

Seikei-Kakou ◽  
2010 ◽  
Vol 22 (1) ◽  
pp. 48-53
Author(s):  
Hiroshi Furuhashi ◽  
Tsuyoshi Arai ◽  
Masahiro Seto ◽  
Masashi Yamabe
Keyword(s):  
Injection Molding ◽  
Thin Plate ◽  
Fiber Orientation ◽  
Three Dimensional

Numerical Simulation of Fiber Orientation of Short Fiber Reinforced Polypropylene in Injection Molding

2011 ◽  
Vol 418-420 ◽  
pp. 1194-1201
Author(s):  
He Sheng Liu ◽  
Ai Hua Xiong ◽  
Xing Yuan Huang ◽  
Jia Mei Lai
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Fiber Orientation ◽  
Subsurface Layer ◽  
Core Layer ◽  
Injection Molding Process ◽  
Main Process ◽  
Fiber Reinforced ◽  
Molding Process ◽  
Melt Temperature

Based on generalized non-Newtonian fluid with seven parameters Cross-WLF viscosity model and modified 2-double Tait model, the numerical simulation was carried out for the short glass fiber reinforced PP injection molding process of rectangular part. The influence of main process parameters on fiber orientation is investigated. The results show that fiber orientation can be generally divided into three-regional layers in injection molding, that is outer-surface, subsurface and core layer. The degree of fiber orientation in subsurface layer is the highest and that in core layer is the lowest. The influence of fibers interaction coefficient (Ci) and fibers aspect ratio (re) on fiber orientation is significant. There is obvious difference between simulation results and practical results without consideration of Ci. The effect of melt temperature, mold temperature and cooling tubes number on fiber orientation isn’t obvious.

scholarly journals Modeling and Simulation of Fiber Orientation in Injection Molding of Polymer Composites

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Jang Min Park ◽  
Seong Jin Park
Keyword(s):  
Finite Element ◽  
Injection Molding ◽  
Fiber Orientation ◽  
Flow Model ◽  
Three Dimensional ◽  
Coupled Analysis ◽  
Injection Molding Process ◽  
Molding Process ◽  
Orientation Tensor ◽  
Closure Approximations

We review the fundamental modeling and numerical simulation for a prediction of fiber orientation during injection molding process of polymer composite. In general, the simulation of fiber orientation involves coupled analysis of flow, temperature, moving free surface, and fiber kinematics. For the governing equation of the flow, Hele-Shaw flow model along with the generalized Newtonian constitutive model has been widely used. The kinematics of a group of fibers is described in terms of the second-order fiber orientation tensor. Folgar-Tucker model and recent fiber kinematics models such as a slow orientation model are discussed. Also various closure approximations are reviewed. Therefore, the coupled numerical methods are needed due to the above complex problems. We review several well-established methods such as a finite-element/finite-different hybrid scheme for Hele-Shaw flow model and a finite element method for a general three-dimensional flow model.

scholarly journals THREE DIMENSIONAL NUMERICAL SIMULATION OF POLYMER CRYSTALLIZATION DURING PLASTIC INJECTION MOLDING

2011 ◽  
Vol 011 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Bo YAN ◽  
Yang LI ◽  
Xiao KONG ◽  
Peng ZHAO ◽  
Dequn LI
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Three Dimensional ◽  
Polymer Crystallization ◽  
Plastic Injection Molding ◽  
Plastic Injection
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