杨木单板条层积材的蠕变性能分析  

Creep Behavior of Poplar Parallel Strand Lumber

作　　者：陈晓艳[1] 孙丹丹[1] 王志鹏[1] 张海洋[2] 卢晓宁[2] 

机构地区：[1]宿迁市产品质量监督检验所,江苏宿迁223800 [2]南京林业大学木材工业学院,江苏南京210037

出　　处：《西北林学院学报》2014年第4期203-207,共5页Journal of Northwest Forestry University

基　　金：江苏省苏北科技发展计划项目(BC2012417)

摘　　要：采用三点弯曲的方法对杨木单板条层积材进行了30%和40%2个应力水平的蠕变试验,并用四元件Burger模型对蠕变数据进行拟合。结果表明,四元件Burger模型很适合用于描述杨木单板条层积材的蠕变变形,且随着应力水平的增加,PSL的瞬时弹性变形增加。Creep behaviors of of poplar parallel strand lumber （PSL） under the loads of 30% and 40% weretested. The resultant data were analyzed by Burger model. The results indicated that the Burger model was suitable to describe the creep behaviors of poplar PSL, and the instantaneous elastic behavior would increase with the increase of loads.

关 键 词：杨木 单板条层积材 蠕变 Burger模型 

分 类 号：S781.21[农业科学—木材科学与技术]