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rubik's cube as in-situ programmable matter and a reconfigurable mechanical metamaterial

science China Technological sciences 2024年第10期67卷 3221-3234页

作者： ZHU shaoWei CHEN Huan YANG XiaoQiang TAN Li JIN shuai CHEN LiMing LIU Tao TAN XiaoJun WANG LianChao WANG Bing MUAMER Kadic College of Aerospace Engineering Chongqing University state Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University school of Civil Aviation Northwestern Polytechnical University National Key Laboratory of science and Technology on Advanced Composites in special Environments Harbin Institute of Technology Institut FEMTO-sT CNRS UMR 6174University Bourgogne

As part of the 4th industrial revolution, programmable mechanical metamaterials exhibit great application potential in flexible robotics, vibration control, and impact protection. However, maintaining a programmed state without sustaining the external stimulus is often challenging and leads to additional energy consumption. Inspired by rubik's cube, we design and study an insitu programmable and distribution-reconfigurable mechanical metamaterial(IPDR-MM). A matrix model is developed to model IPDR-MMs and describe their morphological transitions. Based on this model, the reinforcement learning method is employed to find the pathways for morphological transitions. We find that IPDR-MMs have controllable stiffness across several orders of magnitude and a wide range of adjustable anisotropies through morphology transformation. Additionally, because of the independence of the directions of morphology transformation and bearing, IPDR-MMs exhibit good stability in bearing and can readily achieve high stiffness. The rubik's cube-inspired design concept is also instructive for other deformable structures and metamaterials, and the current version of the proposal should be sufficiently illustrative to attract and broaden interdisciplinary interests.

关键词： mechanical metamaterials in-situprogrammable distribution-reconfigurable rubik's cube controllable stiffness and anisotropy

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Overview of rubik's cube and Reflections on Its Application in Mechanism

引用

Chinese Journal of Mechanical Engineering 2018年第4期31卷 9-20页

作者： Da-Xing Zeng Ming Li Juan-Juan Wang Yu-Lei Hou Wen-Juan Lu Zhen Huang school of Mechanical Engineering Yanshan University

rubik’s cube is a widely popular mechanical puzzle that has attracted attention around the world because of its unique characteristics. As a classic brain-training toy well known to the public, rubik’s cube was used for scientific research and technology development by many scholars. This paper provides a basic understanding of the rubik’s cube and shows its mechanical art from the aspects of origin and development, characteristics, research status and especially its mechanical engineering design, as well as making a vision for the application in mechanism. First, the invention and origin of rubik’s cube are presented, and then the special characteristics of the cube itself are *** that, the present researches of rubik’s cube are reviewed in various disciplines at home and abroad, including the researches of rubik’s cube scientific metaphors, reduction algorithms, characteristic applications, and mechanism issues. Finally, the applications and prospects of rubik’s cube in the field of mechanism are discussed.

关键词： rubik's cube scientific research Mechanical art Application and prospects

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