Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo
查看参考文献12篇
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文摘
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High 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. |
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来源
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Journal of Bionic Engineering
,2008,5(3):231-238 【核心库】
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DOI
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10.1016/s1672-6529(08)60029-3
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关键词
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bionic design
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bamboo culm
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thin-walled cylindrical structure
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buckling
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load-carrying efficiency
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地址
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1.
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing, 100083
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Shenyang Aircraft Design Institute, Shenyang, 110035
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1672-6529 |
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学科
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生物工程学(生物技术) |
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基金
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国家自然科学基金
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Aeronautical Science Foundation of China(Grant No.05B01004)
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文献收藏号
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CSCD:3360178
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