北京林业大学学报2012，Vol.34Issue(6)：126-130,5.
杉木木材管胞纵向弹性模量的研究
Longitudinal modulus of elasticity of Chinese fir tracheids.
摘要
Abstract
This paper calculates the longitudinal modulus of elasticity of Chinese fir tracheids (Ecell) by measuring the wood specimen' s air-dried density and tensile modulus of elasticity parallel to wood grain. The variation of Eoon within a tree and the relationship between Eo,ll and microfibril angle (MFA) were investigated. Results indicated that Eoo,1 exhibited a larger variation in the radial direction than in the longitudinal direction (tree height direction). The average Ecell of all tested samples was 44.06 GPa. The tracheids close to the pith had relatively lower Eoen valued at 16.36 GPa. With increasing MFA, Eooll dccreased significantly. When MFA was higher than 24°, the decreasing range of Eoon became more gradually.关键词
杉木/管胞/纵向弹性模量/微纤丝角Key words
Chinese fir/tracheid/longitudinal modulus of elasticity/microfibril angle分类
农业科技引用本文复制引用
张淑琴,余雁,费本华,王汉坤..杉木木材管胞纵向弹性模量的研究[J].北京林业大学学报,2012,34(6):126-130,5.基金项目
国家自然科学基金重点项目（30730076）. （）
