scholarly journals Design Sensitivity Analysis for the Optimization of the Injection Molding Process

2005 ◽  
Vol 20 (1) ◽  
pp. 86-92 ◽  
Author(s):  
F. Ilinca ◽  
J.-F. Hétu ◽  
D. Pelletier
Keyword(s):  
Sensitivity Analysis ◽  
Injection Molding ◽  
Design Sensitivity ◽  
Design Sensitivity Analysis ◽  
Injection Molding Process ◽  
Molding Process

Design Sensitivity Analysis Applied to Injection Molding Process: Injection Pressure and Multi-Gate Location Optimization

2000 ◽  
Author(s):  
Kalonji K. Kabanemi ◽  
Jean-François Hétu ◽  
Abdessalem Derdouri
Keyword(s):  
Sensitivity Analysis ◽  
Injection Molding ◽  
Injection Pressure ◽  
Pressure Profile ◽  
Design Sensitivity ◽  
Design Sensitivity Analysis ◽  
Injection Molding Process ◽  
Molding Process ◽  
Filling Fraction ◽  
Design Variables

Abstract In this work, we develop a numerical simulation method to optimize the injection molding process using the design sensitivity analysis (DSA). The optimization concerns the filling stage and focuses on the number and location of gates in a mold cavity as well as the injection pressure, considered as one of the key processing parameters, in order to minimize the fill time. Since the problem to be solved involves transient flow with free surfaces, the direct differentiation method is used to evaluate the sensitivities of the Hele-Shaw, filling fraction and the energy equations with respect to the design variables used in the analysis. The mesh domain parameterization is coped with using B-spline functions. Sensitivity equations are solved by means of finite element method. The proposed numerical approach is combined with the sequential linear and quadratic programming method of the DOT optimization tools to find the new design variables at each iteration. Starting with any initial gate locations and injection pressure profile, the method enables us to find the optimal gate locations together with the optimal injection pressure profile. Finally, numerical results involving complex mold geometries are presented and discussed to assess the validity and robustness of the proposed method.

scholarly journals LCI Databases Sensitivity Analysis of the Environmental Impact of the Injection Molding Process

2015 ◽  
Vol 7 (4) ◽  
pp. 3792-3800 ◽  
Author(s):  
Ana Elduque ◽  
Carlos Javierre ◽  
Daniel Elduque ◽  
Ángel Fernández
Keyword(s):  
Sensitivity Analysis ◽  
Environmental Impact ◽  
Injection Molding ◽  
Injection Molding Process ◽  
Molding Process

Thermal and Design Sensitivity Analyses for Cooling System of Injection Mold, Part 1: Thermal Analysis

1998 ◽  
Vol 120 (2) ◽  
pp. 287-295 ◽  
Author(s):  
S. J. Park ◽  
T. H. Kwon
Keyword(s):  
Thermal Analysis ◽  
Injection Molding ◽  
Cooling System ◽  
Design Sensitivity ◽  
Sensitivity Analyses ◽  
Injection Molding Process ◽  
Molding Process ◽  
Exterior Surface ◽  
Cad System ◽  
Thermal Analysis Result

In recent years, increased attention has been paid to the design of cooling systems in injection molding, as it becomes clear that the cooling system affects significantly both productivity and part quality. In designing the cooling system of a mold efficiently in terms of rapid and uniform cooling, it would be desirable for mold designers to have an optimal CAD system. For this optimal design, one needs capabilities of both a thermal analysis (to be discussed in Part 1) and a corresponding DSA (to be presented in Part II) for the 3-d mold heat transfer during the cooling stage of an injection molding process. It was found that seemingly negligible inaccuracy in the thermal analysis result sometimes leads to meaningless DSA result. With a successful DSA being an intermediate goal towards optimum design, we have improved the thermal analysis system based on the modified BEM in terms of accuracy and developed rigorous treatments of B.C.s appropriate for DSA by considering the following issues: (i) numerical convergency, (ii) the series solution in part thermal analysis, iii) treatment of tip surface of line elements, (iv) treatment of coolant, and (v) treatment of mold exterior surface. Using two examples, this paper amply demonstrates the importance of these issues.

Filling Behavior of Polymer Material into Sub-^|^mu;m Structure in Injection Molding Process

2013 ◽  
Vol 133 (4) ◽  
pp. 105-111
Author(s):  
Chisato Yoshimura ◽  
Hiroyuki Hosokawa ◽  
Koji Shimojima ◽  
Fumihiro Itoigawa
Keyword(s):  
Injection Molding ◽  
Polymer Material ◽  
Injection Molding Process ◽  
Molding Process
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