Rubik's cube as in-situ programmable matter and a reconfigurable mechanical metamaterial
作者机构：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 6174 University Bourgogne
出 版 物：《Science China Technological Sciences》 (中国科学:技术科学(英文版))
年 卷 期：2024年
核心收录：
学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：the support of the National Natural Science Foundation of China (Grant No. 12202084) the support of the National Natural Science Foundation of China (Grant No. 12372127) the support of the National Natural Science Foundation of China (Grant No.12202085) the support of the National Natural Science Foundation of China (Grant No. 12302190) the the Fundamental Research Funds for the Central Universities (Grant No. 2024CDJXY009) the Fundamental Research Funds for the Central Universities (Grant No. 2022CDJQY-004) Chongqing Natural Science Foundation (Grant Nos.CSTB2024NSCQ-JQX0028 and CSTB2023NSCQLZX0083) the China Postdoctoral Science Foundation Funded Project (Grant No. 2022M720562) the Special Fund for Postdoctoral Research Project of Chongqing (Grant No.2021XM3022) the Science Foundation of the National Key Laboratory of Science and Technology on Advanced Composites in Special Environments (Grant No. JCKYS2023603C018) the support of the EIPHI Graduate School (Grant No. ANR-17-EURE0002)
摘 要：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.
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