摘要
给出木材瞬态热传导分析的基本理论,针对木材的热各向异性,利用有限元方法,对木材瞬态温度场进行有限元分析和计算,获得加热过程中木材温度场的分布与变化规律。试材选取帽儿山落叶松,仿真和试验结果表明将该方法用于细胞排列规则的针叶材是可行的,有限元计算结果与试验测量结果接近。
During the heat treat of wood, it is important to forecast accurately the transient temperature distribution in wood for control effectively the heat stress and the distortion of structural element. This paper presented the basic theory for the analysis of wood transient heat conduction. Considering the thermal anisotropic, finite element method was used to simulate the temperature field. The distribution and variation rule during the heating process was also got. Through comparison numerical simulation solutions with testing experiment results, the simulation results are very consistent with the actual values. It is also proved that the method on wood heat conductivity is feasible and practical.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2008年第1期117-123,共7页
Scientia Silvae Sinicae
基金
中国博士后科学基金项目(20070410880)
黑龙江省博士后基金项目(520-415007)
关键词
有限元
针叶材
瞬态温度场
数值仿真
finite element
softwood
transient temperature distribution
numerical simulation
