Snap-through mechanism of a thin beam confined in a curved constraint

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-11-22 DOI:10.1016/j.tws.2024.112745

Pengfei Yang , Xuefeng Li , Shiwei Xin , Yuqing Mao , Luyu Gao , Fei Dang

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引用次数: 0

Abstract

In this work, a novel snap-through mechanism of a thin beam confined in a curved constraint and driven by local loading curvature is investigated. The movable boundaries of the buckled thin beam enable it to output snap-through rotation at a lower energy input than the double-clamped beam structure. A theory is proposed to reveal the snap-through mechanism of the proposed structure based on the principle of minimum potential energy and saddle-node bifurcation, which uncovers the influences of loading positions, length ratio and constraint radius on the critical loading. Both theoretical and experimental results show that the large loading position and small constraint radius correspond to a large critical loading, while the length ratio hardly affects the critical loading. In addition, an experimental device is designed to output linear displacement based on the proposed snap-through mechanism. Due to lower energy input and snap-through response characteristics, the proposed bistable mechanism exhibits great prospects in energy harvesters, actuators, motors, pumps and robots.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.