基于曲面板压扭超材料的新型超越离合器

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中文摘要：超越离合器是一种广泛应用于传动系统的单向驱动机构。然而，现有的超越离合器结构复杂，对制备精度要求高，并且在一定程度的磨损后失效。为了解决这些问题，我们提出了一种由锥形结构和新型曲面板压扭超材料组成的新型超越离合器，通过理论计算指导了曲面板压扭超材料的材料分布，保证变形协调，以获得更大的极限扭矩。推导了该超越离合器的传动机理，指导了压扭超材料和锥形结构的参数选择。实验和有限元仿真结果表明，曲面板压扭超材料具有优异的压扭转换效率、柔度和横向刚度，有利于减小超越状态的阻力，保证运行稳定性。采用新型超越离合器构建的单向传动系统在工作状态和超越状态下均表现出可靠的性能。构造的超越离合器提供了一种有效的单向传动方法。该离合器结构简单，具有磨损自补偿能力，在小型化、轻量化设备或机器人领域有很大的应用潜力。

外文标题：New type of overrunning clutch based on curved-plate compression-torsion metamaterial

外文摘要：Overrunning clutches are unidirectional drive mechanisms that are widely used in transmission systems.However,existing overrunning clutches have complex structures,require high preparation accuracy,and fail after a certain degree of wear.To address these issues,we propose a new type of overrunning clutch consisting of a conical structure and novel compression-torsion conversion(CTC)metamaterial with curved plates.Theoretical calculations are employed to guide the material distribution and ensure the deformation coordination of the curved-plate CTC metamaterial for greater ultimate torque.The transmission mechanism of the proposed overrunning clutch is derived to guide the parameter selection of the CTC meta-material and the conical structure.Experiments and finite element simulations reveal that the curved-plate CTC metamaterial features excellent CTC efficiency,flexibility,and transverse stiffness,which is conducive reducing the resistance of the overrunning state and ensures stability during operation.The unidirectional transmission system constructed with the new overrunning clutch shows reliable performances under working and overrunning states.The constructed overrunning clutch provides an effective one-way transmission method.The clutch with simple construction and self-compensated ability for wear exhibits great potential in miniaturized and lightweight equipment or robots.

外文关键词：

Overrunning clutchMechanical metamaterialCompression-torsion conversionCurved-plate configuration

作者：

王彦斌、欧海峰、胡玲玲

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作者单位：

School of Aeronautics and Astronautics,Sun Yat-sen University,Shenzhen 518107,China

关键词：

Overrunning clutch Mechanical metamaterial Compression-torsion conversion Curved-plate configuration

基金：

National Natural Science Foundation of China

项目编号：

12172388

出版年：

2024

DOI：

10.1007/s10409-024-23608-x

力学学报(英文版)

CSTPCD

影响因子：0.363

ISSN：0567-7718

年,卷(期)：2024.40(8)