Preform shape and operating condition optimization for the stretch blow molding process

Method for the evaluation of stretch blow molding simulations with free blow trials

Finite-Element (FE) simulations are a valuable tool to support the analysis and optimization of production processes. In order to achieve realistic simulation results, a consistent simulation set-up followed by an evaluation through experiments is crucial. Stretch Blow Molding (SBM) is a commonly applied forming method to produce thin walled bottles. Polyethylene terephthalate (PET) preforms ar...

Shape optimization and preform design in metal forming processes

A continuum sensitivity analysis is presented for the computation of the shape sensitivity of ®nite hyperelastic±viscoplastic deformations involving contact with friction using a direct di€erentiation method. Weak shape sensitivity equations are developed that are consistent with the kinematic analysis, constitutive sub-problem as well as the analysis of the contact/friction sub-problem used in...

Optimization of the injection molding process of Derlin 500 composite using ANOVA and grey relational analysis

Warpage and shrinkage control are important factors in proving the quality of thin-wall parts in injection modeling process. In the present paper, grey relational analysis was used in order to optimize these two parameters in manufacturing plastic bush of articulated garden tractor. The material used in the plastic bush is Derlin 500. The input parameters in the process were selected according ...

Effective Run-In and Optimization of an Injection Molding Process

Optimization of extrusion blow molding processes using soft computing and Taguchi's method

The objective of this study is to present a new numerical strategy using soft computing techniques to determine the optimal die gap programming of extrusion blow molding processes. In this study, the design objective is to target a uniform part thickness after parison inflation by manipulating the parison die gap openings over time. To model the whole process, that is the parison extrusion, the...