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Development of Bistable Single-layered Double-state Miura for Soft Morphing Actuator Applications
H. R. Park(박형률),S. C. Yoon(윤성철),Y. Jeong(정재윤),W. S. Chu(추원식) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
Engineering application of rigid origami has been sought after since the birth of the concept. With structural rigidity and maneuverability in morphing behavior, it has been widely applied in structures requiring swift deployment. However, with difficulty in controlling the folding morphology, its utilization has been limited to structures with radial deployment. Bistable origami is a useful option for building structures requiring directional deployment. By applying critical force, hidden degree of freedom can be mined for directional flexibility and pattern alternation. However, bistable origami often involves attaching of compatible patterns, leading to an additional manufacturing step. In this research, we developed a Bistable Single-layered Origami (BSO) structure utilizing double-state (DS) miura that can alternate between kresling and miura pattern, hence obtaining both torsion and bending with angle range of 540 and 80 respectively. We achieved stable phase-shift by tendon control, which was realized through identification of active vertices that governs the transitioning. The BSO structure was characterized by bending angle and curvature of the fabricated actuator, and the results conclude that BSO actuator can exhibit controllable bending and twisting motion. DS-miura based BSO structure could be applied in making flexible soft actuator that can exhibit precise directional control.