DESIGN AND ANALYSIS OF AN ADDITIVELY MANUFACTURED 1-DOF COMPLIANT DISPLACEMENT REDUCTION MECHANISM FOR MICROPOSITIONING APPLICATION

• Main Author: Gatri, Fayez
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/80021
• Institution: Institut Teknologi Bandung

A robust design and analysis framework tailored for a 1-DOF displacement reduction compliant mechanism system, compatible with Fused Deposition Modelling (FDM) production, is formulated. The mechanism, featuring flexure hinges, levers, and leaf flexures, is monolithically constructed using eSun PLA+ filament through FDM. Experimental and computational study reveal a displacement reduction mechanism with a theoretical displacement reduction (DR) ratio of 3.0, demonstrating exceptional precision (deviations ?5 ?m), low hysteresis (2.45% in +z-axis, 2.87% in -z-axis), and minimal cross-axis coupling (5.6% in +z-axis, 6.4% in -z-axis). Resistant to yield stress and strain failure (SF ? 1.3923) and occupying a compact design area (45.6 mm x 84.5 mm), the mechanism exhibits promise as a precise, compact, and reliable motion reduction system. However, it possesses nonnegligible accuracy error, reaching up to 13.5% in +z-axis and 20.4% in -z-axis. Through a process of elimination and deduction, material and geometric non-linearities (e.g., localized overstraining, elastic hysteresis) and experimental setup flaws were identified as key sources to these errors. The study concludes with recommendations for future improvements, emphasizing refined experimental methodologies and in-depth analyses of the mechanism's dynamics, among other suggestions.