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probability-based analyses of the Snap-Through in Cage-Shaped Mesostructures Under Out-of-Plane Compressions

Acta Mechanica Solida Sinica 2023年第4期36卷 569-581页

作者： Qing Liu Zhangming Shen Zhi Liu Yumeng Shuai Zengyao Lv Tianqi Jin Xu Cheng Yihui Zhang Applied Mechanics Laboratory Department of Engineering MechanicsTsinghua UniversityBeijing 100084China Laboratory of Flexible Electronics Technology Tsinghua UniversityBeijing 100084China

Three-dimensional(3D)mesostructures with distinct compressive deformation behaviors and tunable mechanical responses have gained increasing interest in recent years.3D cage-shaped mesostructures are representative framework structures widely exploited in 3D flexible electronics,owing to their unique cellular geometry and unusual mechanical *** snap-through behavior of cage-shaped mesostructures could potentially result in the performance degradation of electronics,while it could also be harnessed to design reconfigurable *** to the complicated deformation modes and random characteristics in experiments,the snap-through behavior of cage-shaped mesostructures remains largely unexplored,espe-cially in terms of probability-based *** this work,we present a systematic study on the configuration evolution and snap-through of 3D cage-shaped mesostructures under out-of-plane *** and computational studies show the existence of two distinct deformation modes associated with the snap-through,which is controlled by the energy barrier based on the energetic *** diagrams of the deformation modes decode how key geometric parameters and assembly strain affect the *** experiments based on periodic arrays(10 × 10)of mesostructures provided a large amount of deformation data,allowing for statistical analyses of the snap-through *** results provide new insights and useful guidelines for the design of 3D reconfigurable devices and multistable metamaterials based on 3D cage-shaped mesostructures.

关键词： 3D cage-shaped mesostructures Snap-through probability-based analyses 3D assembly Out-of-plane compression

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