Research Progress of Multistable Mechanisms/Structures

doi:10.3901/JME.2025.21.018

Abstract

Abstract: Multistable characteristics represent a unique nonlinear mechanical phenomenon. When a system exhibits multistable characteristic, it means that there are multiple stable equilibrium states (states where the energy reaches a local minimum). In these states, even if the system is subjected to small external disturbances, it can maintain its state by itself without energy input. Multistability can exhibit a variety of mechanical characteristics/behaviors, such as negative stiffness, self-balancing, and disturbance resistance, etc. It has gradually shown great application value in fields such as aerospace, smart robot, and biomedicine, and has attracted a large number of researchers in recent years. This research reviews the typical research achievements on multistable mechanisms and structures in recent years. First, the principles, configurations, and design methods of different multistable mechanisms/structures are summarized from the aspects of compliant mechanisms, origami structures, kirigami structures, soft materials, and tensegrity structures; Then, the typical applications of multistable mechanisms/structures in various application scenarios are introduced; Finally, it offers insights into future development trends, aiming to provide new perspectives for enhancing the design and application of multistable mechanisms and structures.

Key words: multistability, compliant mechanism, origami/kirigami, metamaterial, robot

CLC Number:

TH122

LI Bo, YIN Yanqi, WU Yehui, ZHANG Yi, MA Fulei, BAI Ruiyu, YAO Jiaqiang, CHEN Guimin. Research Progress of Multistable Mechanisms/Structures[J]. Journal of Mechanical Engineering, 2025, 61(21): 18-37.

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