Effective length of bamboo-like stiffened hollow cylindrical structures

IF 1.5 4区 工程技术 Q3 MECHANICS
Ryo Nishiyama, Motohiro Sato
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引用次数: 1

Abstract

Hollow cylindrical structures are susceptible to local buckling because they flatten and significantly reduce their stiffness when they bend. Therefore, many previous studies aimed to improve the strength of pipelines and building structures were conducted. Our research group has focused on bamboo and has theoretically proven that stiffness anisotropy caused by bamboo's unique nodes and vascular bundles enhances the stiffness of cylindrical structures. In this study, to investigate this analytically, we carried out a finite-element analysis and succeeded in deriving a new dimensionless parameter that the stiffening effect of an anisotropic consideration. This result is applicable to a wide range of cylindrical structures, from thin-walled to thick-walled, and it is expected that bamboo-inspired bionic designs will be proposed in the future.
竹状加劲空心圆柱结构的有效长度
空心圆柱形结构容易发生局部屈曲,因为它们在弯曲时变平并显著降低其刚度。因此,前人进行了许多旨在提高管道和建筑结构强度的研究。本课题组以竹子为研究对象,从理论上证明了竹子独特的节点和维管束所引起的刚度各向异性增强了圆柱形结构的刚度。在这项研究中,为了解析地研究这一点,我们进行了有限元分析,并成功地推导了一个新的无量纲参数,该参数考虑了各向异性的加劲效应。这一结果适用于从薄壁到厚壁的各种圆柱形结构,预计未来将提出以竹子为灵感的仿生设计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Mechanics
Journal of Mechanics 物理-力学
CiteScore
3.20
自引率
11.80%
发文量
20
审稿时长
6 months
期刊介绍: The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.
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