Abstract
Keywords
Design of Experiments, Response Surface Methodology, Rigid-Plastic FE-analysis, Under-fill
ABSTRACT
The fuel injector is a part that controls the fuel supply of automotive engine. The housing of the fuel injector supports the rod, the niddle valve and the solenoid. In this study, the rigid-plastic FE-analysis by using the design of experiments (DOE) and the response surface methodology (RSM) has been performed to produce the product reducing the under-fill and the maximum effective strain. Also the elastic FE-analysis of the dies has been performed to estimate the safety of the dies at the final stage of the 3 rd process. From the results of DOE, the stem of counter punch and the face angle of punch at the 1 st process, and the stem of punch at the 2 nd process were determined as the significant design variables for each response such as the upper under-fill, lower under-fill and the maximum effective strain. From the results of RSM, the optimal values of the design variables have been also determined by simultaneously considering the responses.