A flexible and smart shape memory alloy composite sheet based on efficient and bidirectional thermal management

Yang, Yang; Wang, Yongquan; Yao, Tao; Feng, Xiaojuan

doi:10.1080/19475411.2022.2076754

Cited by 11 publications

(1 citation statement)

References 48 publications

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“…Zhang et al [16] designed a claw with bistable structure, which can be grasped by bistable transition. Currently, the main actuation methods include traditional forms of pneumatic, hydraulic and electric, as well as intelligent forms of piezoelectric [17,18], dielectric elastomers [19][20][21][22], SMAs [23][24][25][26] and magnetorheological fluids [27,28]. Among them, SMA as the intelligent material with the best memory performance among metal materials is integrated with sensing and actuation [29,30].…”

Section: Introductionmentioning

confidence: 99%

A fast actuated soft gripper based on shape memory alloy wires

Li,

Ma,

et al. 2024

Smart Mater. Struct.

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The application of shape memory alloy (SMA) actuated soft grippers is limited by their slow recovery speed. In order to further expand their application range, as one of the solutions to address this limitation, this paper proposes a fast actuated soft gripper based on shape memory alloy wire active heat dissipation and elastic rib combination to meet the rapid actuation and recovery. The structure primarily consists of a heat dissipation module capable of winding SMA wire and a soft structure resembling a scorpion tail with embedded supper elastic SMA wire. The geometric structure model, dynamics and SMA constitutive model and finite element model of the soft gripper are established, and the lateral deformation of soft bionic scorpion tail end is analyzed through simulations and experiments. In addition, the force in designed soft gripper tip and its ability to grasp different objects are also studied through experiments. The results show that the addition of a cooling fan increased the recovery rate by about 25%, and the force in soft bionic scorpion tail end can reach about 0.12 N. The designed soft gripper can successfully grasp objects with different softness, shape, size and weight. It lays a theoretical foundation and technical support for the development of soft grippers actuated by SMA in the future.

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