Effect of Specimen Size on Compression Properties Parallel to Grain of Bamboo
Shi Junli1,2, Li Jing1,2, Zhu Jiawei1,2, Wang Hankun1,2
1. Department of Biomaterials, International Center for Bamboo and Rattan, Beijing 100102, China; 2. State Forestry Administration and Beijing Co-building Key Laboratory of Bamboo and Rattan Science & Technology, Beijing 100102, China
Abstract：Moso bamboo (Phyllostachys pubescens Mazei ex H. de Lebaie) was used to investigate the effect of specimen size on compression properties parallel to grain of bamboo by testing specimens with different sizes. The results showed that the compression modulus was positively correlated with bamboo culm wall thickness, specimens height and curvature, and the compression strength negatively correlated with culm wall thickness, specimens height and curvature. In the elastic deformation stage, the increase of specimens size would increase the tissue ratio of vascular bundle and increase the calculated value of the compression modulus parallel to grain. In the plastic deformation stage, the curved structure might cause the specimens to be unstable in advance due to the change in curvature during compression, which reduced the compression strength.
石俊利, 黎静, 朱家伟, 王汉坤. 样品尺寸对竹材顺纹压缩力学性能的影响研究[J]. 世界竹藤通讯, 2018, 16(4): 10-14.
Shi Junli, Li Jing, Zhu Jiawei, Wang Hankun. Effect of Specimen Size on Compression Properties Parallel to Grain of Bamboo. World Bamboo and Rattan, 2018, 16(4): 10-14.
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