Prediction of Postbuckling Characteristics of Perforated Metamaterial Cylindrical Shells Under Axial Compression
作者机构：State Key Laboratory of Structural Analysis for Industrial Equipment and School of Ocean Science and TechnologyDalian University of TechnologyPanjin 124221China AVIC Jonhon Optronic Technology Co.Ltd.Luoyang 471003China State Key Laboratory of Structural Analysis for Industrial Equipment and Department of Engineering MechanicsDalian University of TechnologyDalian 116024China Department of Architecture and Civil EngineeringCity University of Hong KongTat Chee AvenueKowloonHong KongChina
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2023年第36卷第3期
页 面：428-442页
核心收录：
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
基 金：State Key Laboratory of Structural Analysis for Industrial Equipment(S22303) Fundamental Research Funds for the CentralUniversities(DUT22LK16,DUT21LK35) National Natural Science Foundation of China(12002071)
主 题：Cylindrical shell Negative Poisson’s ratio Postbuckling Waisted deformation
摘 要：Large deflection postbuckling responses of metamaterial cylindrical shells perforated by arrayed circular holes are investigated through a newly proposed theoretical model incorporating with finite element method and *** triggering of an unusual pattern transformation under compressive load(that shows special hyperelastic metamaterial characteristics)contributes to the particularity of the postbucklingmodes,in which the axisymmetric waisted and non-axisymmetric postbuckling configurations of perforated cylindrical shells are *** transformations of postbucking modes are mainly affected by global outline sizes of the shell and local geometrical parameters of *** structural load-carrying capacity for the waisted postbuckling response suffers a sudden drop and recovers when the holes ***,the shell would undergo a sustained fall off under non-axisymmetric postbuckling *** negative Poisson’s ratio induced by pattern transformation plays a key role and a critical effective threshold value exists,inducing the waisted postbuckling *** revealed principles would be of benefit for achieving a controllable structural stability that is usually difficult to implement on those conventional structures.
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