基于细观力学的木材干燥应力演变机制研究  

Study on the Stress Evolution Mechanism of Wood Drying Based on Micromechanics

作　　者：郝晓峰[1] 徐康[1] 李贤军[1] 乔建政[1] 吴义强[1] HAO Xiao-feng;XU Kang;LI Xian-jun;QIAO Jian-zheng;WU Yi-qiang(College of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,Hunan,P.R.China)

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004

出　　处：《林产工业》2021年第6期1-6,20,共7页China Forest Products Industry

基　　金：国家重点研发计划课题“木材节能备料与质量控制技术研究”(2016YFD0600701);国家自然科学基金青年项目“木材微波精准爆破的水热迁移与破膜机理研究”(31700486)。

摘　　要：为探明木材微观组织对木材干燥应力的影响规律,从木材微观构造角度出发,结合复合材料细观力学理论构建了木材干燥破坏力学模型,定量分析了不同薄/厚壁细胞力学性能比及二者体积含量对干燥应力的影响机制,为精准优化木材干燥工艺提供理论基础。To find out the influence of wood microstructure on wood drying stress of wood,in this article,based on the perspective of wood microstructure and mesomechanics,wood drying damage mechanics model was established for quantitative analysis of the influence of the different mechanical properties and volume content of parenchyma/sclerenchyma cells.This research could provide theoretical basis for accurate optimization of wood drying process.

关 键 词：木材干燥 应力 薄壁细胞 厚壁细胞 破坏力学模型 

分 类 号：TS652[轻工技术与工程] S781[农业科学—木材科学与技术]