文献类型：期刊文献

英文题名：Numerical Modelling of Drying Induced Cracks in Wood Discs Using the Extended Finite Element Method

作者：Fu, Zongying[1] Zhou, Yongdong[1] Yan, Tingguo[2] Lu, Yun[1]

第一作者：付宗营

通信作者：Lu, Y[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol, Status Forestry & Grassland Adm, Beijing 100091, Peoples R China;[2]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

年份：2023

卷号：11

期号：1

起止页码：93-102

外文期刊名：JOURNAL OF RENEWABLE MATERIALS

收录：;EI(收录号：20223312568849);Scopus(收录号：2-s2.0-85135735815);WOS:【SCI-EXPANDED(收录号:WOS:000843172700006)】；

基金：This study was financed by a Grant-in-Aid for Scientific Research from the Youth Program of National Natural Science Foundation of China (No. 31800478) and the National Natural Science Foundation of China (Grant Nos. 31870535 and 32122058)

语种：英文

外文关键词：Wood drying; queensland peppermint; drying cracks; numerical simulation; experimental validation; XFEM

摘要：Drying crack is a common phenomenon occurring during moisture discharge from wood, reducing efficient wood utilization. Drying crack is primarily caused by drying stress, and the reasonable methods for determining drying stress are sparse. In this study, the initiation and propagation of cracks during wood discs drying were simulated using the extended finite element method (XFEM). The distribution of drying stress and displacement was analyzed at different crack conditions based on the simulation results. This study aimed to solve the problem of the limitation of drying stress testing methods and provide a new idea for the study of wood drying stress. The numerical simulation results are found in good agreement with the experimental results, thus corroborating the feasibility of XFEM in modeling drying crack of wood discs. The stress concentration was observed at the crack tip region, while a minor stress was presented in the region of crack passing through, indicating that the crack formation process was also a process of releasing drying stress. Further, more energy was required to form double cracks in comparison with the single crack mode.