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论文类型：期刊论文

发表时间：2022-06-29

发表刊物：机械工程学报

所属单位：运载工程与力学学部

卷号：55

期号：3

页面范围：162-168

ISSN号：0577-6686

摘要：Designing configurations and actuation positions of bistable structures is a key to improve its snap-through properties. Pre-compressed bistable structures with specific snap-through properties are designed by integrated regulating the pre-compression, parameters of local reinforcements and the actuation position. Firstly, the forming process of a pre-compressed bistable beam with local reinforcements is introduced and the design equation of pre-compressed bistable structures with special properties is presented on the basis of theoretical analysis. Then, based on the finite element method, the effects of design parameters (the pre-compression, actuation position, sizes and position of local reinforcements) in the design equation on snap-through properties (the offset snapping force and the arch height) are verified, and the contour map of snap-through properties is drawn. Finally, a pre-compressed bistable beam with expected arch height 3.57 mm and the offset snapping force 1.20 N is designed and fabricated according to the contour map of snapping-through properties The experimental results show that the simulated arch height and offset snapping force of the tested pre-compressed bistable structure are only 1.68% and 11.67% deviated from the experimental results, verifying the accuracy of design results. ? 2019 Journal of Mechanical Engineering.

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