Imperfection Insensitivity of Origami-Inspired Tubular Structures
作者机构：Key Laboratory of C and PC Structures of Ministry of EducationNational Prestress Engineering Research CenterSoutheast UniversityNanjing 210096China Department of Civil EngineeringFaculty of EngineeringUniversiti Malaysia Sarawak94300 Kota SamarahanSarawakMalaysia
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4期
页 面：541-553页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the National Natural Science Foundation of China(Grant No.U1937202) Key Industrial Technology Research&Development Cooperation Projects of Jiangsu Province(BZ2021036) Basic Research Projects on Free Exploration of Funds for Local Scientific and Technological Development Guided by the Central Government(2021Szvup027)
主 题：Imperfection insensitivity Origami tube Buckling Parametric analysis Knockdown factor
摘 要：Axially loaded tubular structures are known to be highly sensitive to initial geometric imperfections,which can significantly reduce their design bearing *** address this issue,this study explores the potential of an origami-inspired design for tubular structures to achieve a lower sensitivity to *** study considers various designs,including diamond-shaped,pyramid-shaped,new Kresling,and pre-embedded rhombic origami tubes,and employs knockdown factors(KDFs)to illustrate the reduction of the design bearing capacity of these structures with initial geometric imperfections for safety *** element analysis shows that some of the origami tubes have superior design bearing capacity,mass efficiency,and KDFs when compared to standard circular *** the origami tubes considered,the rhombic tube demonstrates the best performance and is further studied through parametric analyses of geometric design,aspect ratio,and wall thickness to achieve additional performance ***,the superior performance of the rhombic tube is evaluated and verified for various loading scenarios,including eccentric compression and compression-torsion *** findings of this study provide a promising approach to designing and fabricating imperfection-insensitive tubes using advanced processing technologies such as additive *** work can potentially lead to the development of innovative tubular structures with enhanced safety and reliability in various engineering applications.
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