摘要
对2组不同淹水程度下的枫杨木材力学性质与其气干密度、解剖特征间的关系进行了研究。结果表明,枫杨木材气干密度与抗弯强度、抗弯弹性模量、顺纹抗压强度和横纹(全部)抗压强度间的二项式回归效果比直线回归、指数回归及幂函数回归都好;第1组回归效果优于第2组,但总体上相关性不太高。木材抗弯强度等力学指标与木材解剖特征间具有较高的相关性,横纹(全部)抗压强度与双壁厚间的相关性在径、弦向上存在着较大的差异。
The relationships between the flooding degree and the main mechanical properties, airdry density, anatomy features were researched. The results indicate that the binomial regressions between the airdry density and the bending strength, modulus of bending, compression strength parallel to grain and compression strength perpendicular to grain are better than linear regression, exponential regression and power functional regression. At the same time, the regression result of No.1 group is better than that of No.2, the correlativity isn't very close generally. The correlations between the mechanic indexes such as bending strength etc., and the anatomy features are closer, while the correlations between the compression strength perpendicular to grain and double wall thickness are different.
出处
《西北林学院学报》
CSCD
北大核心
2003年第2期80-83,共4页
Journal of Northwest Forestry University
基金
国家"九五"林业科技攻关专题"长江中下游不同类型滩地综合治理与开发配套技术研究示范"(96 01 02 06)
关键词
枫杨
木材
力学性质
气干密度
解剖特征
淹水程度
关系
flooding degree
Pterocarya stenoptera
mechanical property
air-dry density
anatomy features