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Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo
Alternative TitleElastic Buckling of Bionic Cylindrical Shells Based on Bamboo
Ma Jianfeng1; Chen Wuyi1; Zhao Ling1; Zhao Dahai2
2008
Source PublicationJOURNAL OF BIONIC ENGINEERING
ISSN1672-6529
Volume5Issue:3Pages:231-238
AbstractHigh load-bearing efficiency is one of the advantages of biological structures after the evolution of billions of years. Biomimicking from nature may offer the potential for lightweight design. In the viewpoint of mechanics properties, the culm of bamboo comprises of two types of cells and the number of the vascular bundles takes a gradient of distribution. A three-point bending test was carried out to measure the elastic modulus. Results show that the elastic modulus of bamboo decreases gradually from the periphery towards the centre. Based on the structural characteristics of bamboo, a bionic cylindrical structure was designed to mimic the gradient distribution of vascular bundles and parenchyma cells. The buckling resistance of the bionic structure was compared with that of a traditional shell of equal mass under axial pressure by finite element simulations. Results show that the load-bearing capacity of bionic shell is increased by 124.8%. The buckling mode of bionic structure is global buckling while that of the conventional shell is local buckling.
Other AbstractHigh load-bearing efficiency is one of the advantages of biological structures after the evolution of billions of years. Biomimicking from nature may offer the potential for lightweight design. In the viewpoint of mechanics properties, the culm of bamboo comprises of two types of cells and the number of the vascular bundles takes a gradient of distribution. A three-point bending test was carried out to measure the elastic modulus. Results show that the elastic modulus of bamboo decreases gradually from the periphery towards the centre. Based on the structural characteristics of bamboo, a bionic cylindrical structure was designed to mimic the gradient distribution of vascular bundles and parenchyma cells. The buckling resistance of the bionic structure was compared with that of a traditional shell of equal mass under axial pressure by finite element simulations. Results show that the load-bearing capacity of bionic shell is increased by 124.8%. The buckling mode of bionic structure is global buckling while that of the conventional shell is local buckling.
KeywordSTABILITY ANALYSIS EXTERNAL-PRESSURE bionic design bamboo culm thin-walled cylindrical structure buckling load-carrying efficiency
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Aeronautical Science Foundation of China]
CSCD IDCSCD:3360178
Citation statistics
Cited Times:14[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158013
Collection中国科学院金属研究所
Affiliation1.Beijing University Aeronaut & Astronaut, Sch Mech Engn & Automat, Beijing 100083, Peoples R China
2.中国科学院金属研究所
Recommended Citation
GB/T 7714
Ma Jianfeng,Chen Wuyi,Zhao Ling,et al. Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo[J]. JOURNAL OF BIONIC ENGINEERING,2008,5(3):231-238.
APA Ma Jianfeng,Chen Wuyi,Zhao Ling,&Zhao Dahai.(2008).Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo.JOURNAL OF BIONIC ENGINEERING,5(3),231-238.
MLA Ma Jianfeng,et al."Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo".JOURNAL OF BIONIC ENGINEERING 5.3(2008):231-238.
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