首页|A symmetric substructuring method for analyzing the natural frequencies of conical origami structures
A symmetric substructuring method for analyzing the natural frequencies of conical origami structures
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Conical origami structures are characterized by their substantial out-of-plane stiffness and energy-absorption capacity.Previous investigations have commonly focused on the static characteristics of these lightweight struc-tures.However,the efficient analysis of the natural vibrations of these structures is pivotal for designing conical origami structures with programmable stiffness and mass.In this paper,we propose a novel method to analyze the natural vibrations of such structures by combining a symmetric substructuring method(SSM)and a gener-alized eigenvalue analysis.SSM exploits the inherent symmetry of the structure to decompose it into a finite set of repetitive substructures.In doing so,we reduce the dimensions of matrices and improve computational efficiency by adopting the stiffness and mass matrices of the substructures in the generalized eigenvalue analysis.Finite element simulations of pin-jointed models are used to validate the computational results of the proposed approach.Moreover,the parametric analysis of the structures demonstrates the influences of the number of seg-ments along the circumference and the radius of the cone on the structural mass and natural frequencies of the structures.Furthermore,we present a comparison between six-fold and four-fold conical origami structures and discuss the influence of various geometric parameters on their natural frequencies.This study provides a strategy for efficiently analyzing the natural vibration of symmetric origami structures and has the potential to contribute to the efficient design and customization of origami metastructures with programmable stiffness.
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,and National Prestress Engineering Research Center,Southeast University,Nanjing 211189,China
School of Engineering,University of Liverpool,Liverpool L69 3BX,United Kingdom
Creative Design Engineering Lab(Cdel),School of Engineering,Newcastle University,Newcastle upon Tyne NE1 7RU,United Kingdom
Escuela Técnica Superior de Ingeniería y Diseño Industrial,Universidad Politécnica de Madrid(UPM),Madrid 28012,Spain
展开 >
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaPostgraduate Research&Practice Innovation Program of Jiangsu ProvinceFundamental Research Funds for the Central Universities
NETL
NSTL
万方数据
