摘要
以兴安落叶松规格材的抗弯强度和抗拉强度测试数据为基础,首先建立规格材强度性质的概率密度函数,然后通过累积分布函数建立两种强度之间的关系。研究结果表明:兴安落叶松规格材抗弯强度的概率密度与对数分布拟合较好,抗拉强度的概率密度与威布尔分布拟合较好;抗弯强度和抗拉强度之间存在幂函数关系。
The modulus of rupture（MOR） and ultimate tensile strength（UTS） of dimensional larch（Larix gmelinii） lumber were tested according to ASTM D 4761-1996.The probability density function was used to describe MOR and UTS data.The results indicated that logarithmic distribution had the best goodness of fit with MOR and Weibull distribution had the best goodness of fit with UTS.The relationship between MOR and UTS was established as a power function from the cumulative distributions of MOR and UTS.
出处
《木材工业》
北大核心
2010年第4期1-4,共4页
China Wood Industry
基金
"十一五"国家科技支撑计划项目(2006BAD18B07)
关键词
规格材
抗弯强度
抗拉强度
概率密度函数
拟合优度
dimensional lumber
modulus of rupture
ultimate tensile strength
probability density function
goodness of fit
