| 竹材的动切变模量与密度及纤丝角的关系 |
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| 引用本文： | 余观夏,江泽慧,阮锡根. 竹材的动切变模量与密度及纤丝角的关系[J]. 南京林业大学学报(自然科学版), 2002, 26(3): 5-8 |
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| 作者姓名： | 余观夏 江泽慧 阮锡根 |
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| 作者单位： | 1. 南京林业大学,江苏,南京,210037
2. 中国林业科学研究院,北京,100091 |
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| 基金项目： | 中国林业科学院攀登预选项目 (95 -专 -0 7) |
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| 摘 要： | 运用动态法测出毛竹和孝顺竹两种不同竹种的的动切变模量，分析了其与密度和纤丝角的关系。分别用扭摆，X射线衍射仪和电子密度仪测出竹材试样的动切变模量，纤丝角和密度。结果表明，两竹种的动切变弹性模量随密度和纤丝角余弦的增大而增大，动切变耗散模量也随密度增大而增大，但与纤丝角的余弦关系不大。而耗散角随密度和纤丝角余弦的增大而减小，因此密度和纤丝角是决定竹材动力变模量的两个重要的因素。
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| 关 键 词： | 竹材 动切变弹性模量 动切变耗散模量 密度 纤丝角 |
| 文章编号： | 1000-2006(2002)03-0005-04 |
| 修稿时间： | 2001-11-19 |
The Relationship of the Dynamic Sheer Modulus and Density,Microfibre Angle of Bamboo |
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| YU Guan xia ,JIANG Ze hui ,RUAN Xi gen. The Relationship of the Dynamic Sheer Modulus and Density,Microfibre Angle of Bamboo[J]. Journal of Nanjing Forestry University(Natural Sciences ), 2002, 26(3): 5-8 |
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| Authors: | YU Guan xia JIANG Ze hui RUAN Xi gen |
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| Affiliation: | YU Guan xia 1,JIANG Ze hui 2,RUAN Xi gen 1 |
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| Abstract: | This paper described relationships of the dynamic sheer modulus and density,microfibre angle of bamboo.The dynamic sheer modulus,density and microfibre angle of two kinds of bamboo in radial and axial direction were measured by means of torsion pendulum,electronic densimentry and X ray diffraction respective.The result showed that the dynamic elastic modulus and dynamic loss modulus increased with increase in density and microfibre angle,whereas the loss tangent decreased.It is concluded that dynamic sheer modulus of bamboo were much dependent on density and microfibre. |
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| Keywords: | Bamboo Dynamic elastic modulus Dynamic loss modulus Density Microfibre angle |
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