Analytical modeling and experimental validation of rotationally actuated pinned–pinned and fixed–pinned buckled beam bistable mechanisms
نویسندگان
چکیده
Buckled beams have become key building blocks in compliant mechanisms to achieve nonlinear behaviors, such as bistability, constant-force and stiffness tuning. However, designing modeling components is challenging due their highly characteristics existing models typically lack accuracy or rely on numerical computations. This paper aims at giving closed-form formulas efficiently characterize the snap-through behavior facilitate design process of rotationally actuated pinned–pinned fixed–pinned bistable buckled beams. A new generic analytical model for precompressed based Euler–Bernoulli beam theory first established then applied these two configurations. Finite element experimental validations are performed, showing excellent agreement with model. The results show that angular input pinned extremity significantly decoupled from moment output other extremity, until snap-through. Additionally, we stable values can be controlled by adjusting precompression displacement beam. Finally, demonstrate practicality studied a novel gripper design.
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ژورنال
عنوان ژورنال: Mechanism and Machine Theory
سال: 2022
ISSN: ['1873-3999', '0094-114X']
DOI: https://doi.org/10.1016/j.mechmachtheory.2022.104874