文献类型：期刊文献

英文题名：Determination and Simulation of the Mode I Fracture Toughness of Bamboo Scrimber

作者：Wu, Guofang[1,2] Gong, Yingchun[1,2] Zhong, Yong[1] Ren, Haiqing[1,2]

第一作者：武国芳

通信作者：Zhong, Y[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100090, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100090, Peoples R China

年份：2019

卷号：14

期号：3

起止页码：6811-6821

外文期刊名：BIORESOURCES

收录：;EI(收录号：20195107874450);Scopus(收录号：2-s2.0-85076558192);WOS:【SCI-EXPANDED(收录号:WOS:000478803800013)】；

基金：The authors are grateful for the financial support from the National Key R&D Program of China (Grant No. 2017YFC0703501) and the Fundamental Research Funds of Research Institute of Forestry New Technology, Chinese Academy of Forestry (Grant No. CAFYBB2017SY036).

语种：英文

外文关键词：Bamboo scrimber; Compact tension specimen; Fracture toughness; XFEM

摘要：Compact tension specimens were used to determine the mode I (opening crack) fracture toughness of bamboo scrimber, a bio-based product for engineering applications. The influence of thickness and grain mode were investigated, and the extended finite element method (XFEM) was used to simulate the fracture behavior of bamboo scrimber. The results showed that all of the specimens failed in a brittle way. There were no significant differences in fracture toughness among specimens with different thicknesses; however, the grain mode did have a significant effect. The average fracture toughness K-IC for T-L and R-L grain modes of bamboo scrimber were 54.32 MPa.mm(1/2) and 47.91 MPa.mm(1/2), respectively, where the letter "L" represents the longitudinal direction, "R" represents the stack direction, and "T" represents the flattened tangential direction. Based on the results, compact tension specimens with a thickness of 10 mm are recommended to measure the mode I fracture toughness of bamboo scrimber. Furthermore, XFEM was confirmed as a useful tool to investigate the fracture behavior of bamboo scrimber.