Optimization Design and Characterization of a Compliant Bistable Mechanism with B-spline Curved Beams

• Main Authors: I-Ting Chi, 紀易廷
• Other Authors: Dung-An Wang
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/57398337077530707649

碩士 === 國立中興大學 === 精密工程學系所 === 105 === In this research, the finite element method is adopted to analyze the force and the displacement relation of a compliant bistable mechanism with B-spline curved beams. The mechanism consists of B-spline curved beams and a shuttle mass. The curve beams have a reinforced segment at the center of each beam. Nearly equivalent maximum force output in the forward and backward motion direction of the mechanism is achieved by an optimization design approach. The optimization design approach is based on a genetic algorism. The force-displacement relation of the mechanism is obtained by finite element analyses. The design parameters are the control points of the B-spline curve and the length of the reinforced segment. Prototypes are fabricated by a numerical controlled engraving machine. Experiments are carried out to measure the force-displacement curve of the fabricated prototype. The experimental results agree with the results of the finite element analyses.