A numerical simulation study of mold filling in the injection molding process

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Markus Baum ◽  
Denis Anders
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Simulation Study ◽  
Mold Filling ◽  
Injection Molding Process ◽  
Molding Process

Numerical simulation of thermoplastic wheat starch injection molding process

1998 ◽  
Vol 38 (12) ◽  
pp. 2029-2038 ◽  
Author(s):  
B. Abbégs ◽  
R. Ayad ◽  
J.-C. Prudhomme ◽  
J.-P. Onteniente
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Wheat Starch ◽  
Injection Molding Process ◽  
Molding Process

scholarly journals Numerical Simulation on the Penetration Behavior of the Projectile during the Water Injection Stage of Water-Projectile-Assisted Injection Molding Process

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Tangqing Kuang ◽  
Qiang Feng ◽  
Tian Liu ◽  
Luohao Zhong ◽  
Yanqing Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Water Injection ◽  
Injection Molding Process ◽  
Molding Process ◽  
Pressure Fields ◽  
Hollow Space ◽  
Pressure Water ◽  
Penetration Behavior ◽  
Strain Rate Field

Water-projectile-assisted injection molding (W-PAIM) is a novel molding process for plastic pipes with complicated shape. It utilizes high-pressure water as a power to push a solid projectile to penetrate through the melt to form a hollow space. In order to investigate the penetration behavior of the projectile during the water injection stage of W-PAIM process, numerical simulation of the water injection stage of a W-PAIM pipe with straight and curved segments was carried out. A turbulent flow for the driving water was considered in the motion equation, and the dynamic mesh technology was used to deal with the moving solid projectile. The simulation results, including RWT and the flow fields, were compared with those of water-assisted injection molding (WAIM) pipe with the same outer dimensions. It was found that the residual wall thickness (RWT) of the W-PAIM pipe is much thinner than that of the WAIM pipe. The projectile has a crucial influence on the RWT. The pressure fields of W-PAIM and WAIM are very similar in both straight and curved segments. The velocity field and strain rate field near the penetration front in W-PAIM are quite different from those in WAIM due to the drag flow caused by the projectile penetration.

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 Method for the Investigation of Mold Filling in the Fiber Injection Molding Process Based on Image Processing

Procedia CIRP ◽  
2019 ◽  
Vol 86 ◽  
pp. 156-161
Author(s):  
Patrick Moll ◽  
Axel Schäfer ◽  
Sven Coutandin ◽  
Jürgen Fleischer
Keyword(s):  
Image Processing ◽  
Injection Molding ◽  
Mold Filling ◽  
Injection Molding Process ◽  
Molding Process

scholarly journals Experimental Study and Numerical Simulation of Injection Molding Process for Special-shaped Plastic Part

2015 ◽  
Vol 9 (1) ◽  
pp. 416-421
Author(s):  
Chen Xiaoyong ◽  
Wang Qian
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Injection Molding ◽  
Orthogonal Experiment ◽  
Coordinate Measuring Machine ◽  
Injection Molding Process ◽  
Plastic Part ◽  
Molding Process ◽  
Measuring Machine ◽  
Cae Technology

Taking the special-shaped plastic part as the research object, experimental study and numerical simulation of injection molding process were performed using numerical simulation technology, orthogonal experiment method, software Moldflow, injection machine and coordinate measuring machine (CMM). The better feeding system and optimal molding process parameters were proposed and qualified products were produced. The research results show that the efficiency of the simulation guidance would be significantly improved by combining the CAE technology and production experience.

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