Dissertation > Excellent graduate degree dissertation topics show

Micro injection molding filling process of numerical simulation

Author: FanJiuHong
Tutor: WenJun；ZhengCan
School: University of Electronic Science and Technology
Course: Software Engineering
Keywords: Microinjection Molding Boundary Slip Numerical Simulation Mathematical model
CLC: TQ320.662
Type: Master's thesis
Year: 2008
Downloads: 168
Quote: 0
Read: Download Dissertation

Abstract


Numerical simulation according to the melt filling process in the plastic injection molding technique can predict the defects in injection molding.It can optimal design the mold,adjust process parameters and has aiming at making technical solving scheme.Microinjection molding is a molding method of the parts’s weight as mg for arithmetical unit and product geometry size asμm for measurement unit.Because of the dimension of micro-product on micro injection molding is very small and traditional macro numerical simulation can not be accuratly to predict the behavior of melt flow in mini mold cavity. So building the academic model to suit the filling phase of micro injection molding is the key to achieve the numerical simulation of micro injection molding.Text is numerical simulation of the process of the filling in micro injection molding the following works have been finished of this article as follows:1. Analysis the characteristic on follow of micro melt. According to the slip in microinjection molding,discussing the mechanism on the phenomenon of micro wall slip and introducing the model of slip of Navier slip boundary. On the foundation of the control mathematical equation on the macro filling phase flowing, from mass, momentum and energy equation of viscous fluid hydromechanics and combine the characteristic of micro injection molding to propose reasonable simplifys and conjecture and to deduce mass, momentum and energy equation suit to micro injection molding again. It founded theoretical principle for numerical simulation of micro injection molding.2. On the foundation of the control mathematical equation suit to micro injection molding, used Cross-WLF viscous model and defined boudary conditions for to simplify the control equation. Simplifing the control mathematical equation by variation method. Discreting pressure field and velocity field by finite element method obtained corresponding element stiffness matrix .Detemining concrete solving step and drawing the flow chart of master program.3. 3D numerical simulation on micro-feature model by Moldflow software,concluded the effects of the melt temperature、mold temperature and Injection rate on the filling length of microstructure.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  18. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  19. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649
  20. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13
  21. Numerical Simulation and Experimental Study of Air-Assisted Sprayer of Orchard,S491

CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > General issues > Production process and production technology > Forming > Injection molding
© 2012 www.DissertationTopic.Net  Mobile