OPTIMIZATION OF CURVED FLEXURE HINGE PARAMETERS FOR ENHANCED MECHANICAL PERFORMANCE

Abstract

Flexure hinges are integral components of compliant mechanism design and as such are an important factor in various engineering applications, contributing to their enhanced mechanical performance and longevity. One newly researched type of flexure hinges is the curved flexure hinge with a wide range of opportunities for possible advancement and applications. This paper presents an investigation into the mechanical performance of curved flexure hinges, with a specific focus on the impact of flexure hinge orientation. The utilization of orientation variations introduces a unique parameter to the optimization process. This diversity allows for a comprehensive design space exploration, potentially leading to novel hinge configurations that exhibit superior mechanical characteristics. By using Finite Element Analysis (FEA) this research aims to advance the understanding of how curved flexure hinge design collectively influences strain, deflection angle and deformation characteristics. By employing a Multi-Objective Genetic Algorithm (MOGA) optimization, this study aims to identify the optimal orientation of a curved flexure hinge as a part of the parallel crankcompliant mechanism that simultaneously maximizes rectilinear motion and minimizes parasitic deviation.