竹材径向压缩蠕变行为研究  

Study on Radical Compression Creep Behavior of Bamboo Wood

作　　者：张晓敏[1,2] 孙正军[2] 王喜明[1] 

机构地区：[1]内蒙古农业大学材料与艺术设计院,内蒙古呼和浩特010019 [2]国际竹藤网络中心,北京100102

出　　处：《林业机械与木工设备》2010年第6期26-29,共4页Forestry Machinery & Woodworking Equipment

基　　金：国家"十一五"科技支撑计划项目(2006BAD19B05)

摘　　要：探讨了毛竹在恒定压力下与不同温度和含水率的关系,确定其对应的蠕变模型,同时研究了竹节对竹材蠕变性能的影响。结果表明:在压应力小于屈服极限时,所选用的勃格四元件模型可以用来模拟竹材径向压缩的短期蠕变行为,四元件参数值均随温度和含水率的增加而减小,竹材带节后其蠕变黏性变形量增大。The relationships between bamboo （Phyllostachs edulis） and different temperature and moisture contents under constant pressure are discussed, corresponding creep models are determined and the effect of bamboo nodes on bamboo creep performance is studied. The results show that when compressive stress is lower than the yield limits, Burger model can be used to simulate the short-term creep behavior of bamboo radial compression., the four-element model parameters decrease with the increase in temperature and moisture content and the creep viscoelastic deformation of the bamboo wood with nodes increases.

关 键 词：毛竹 径向压缩 蠕变 勃格模型 竹节 

分 类 号：TS612[轻工技术与工程]