Multi-objective Optimal Design of Driving Spring in Slide Cover Hinge

Abstract

Combining Taguchi experimental design and fuzzy theory, this research aims to develop a multi-objective algorithm to determine the optimal design parameters for the driving springs in a slide cover hinge. The goal is to determine parameters that will meet the two basic requirements of the spring that would generate adequate reaction force but minimize maximum stress. This research applies finite element method to calculate the reaction force and maximum stress of a deformed spring. Meanwhile, the Taguchi method, which could dramatically reduce the number of experiments, is used to determine the optimal design parameters for the spring. Experimental results suggest that if the maximum stress is minimized, the reaction force will decrease, resulting in the autonomous release of the slide cover hinge; if adequate reaction force is achieved, the maximum stress would exceed the design standard. Therefore, this research employs fuzzy theory to achieve multi-objective as "minimization of maximum stress" and "sufficient reaction force", as a result of an optimal design for driving springs in a slide cover hinge.