文献类型：期刊文献

英文题名：Effects of Grain Pattern on the Rolling Shear Properties of Wood in Cross-Laminated Timber

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

第一作者：武国芳

通信作者：Zhong, Y[1]

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

年份：2021

卷号：12

期号：6

外文期刊名：FORESTS

收录：;EI(收录号：20212410494658);Scopus(收录号：2-s2.0-85107529991);WOS:【SCI-EXPANDED(收录号:WOS:000665883400001)】；

基金：This work was funded byNationalNatural Science Foundation ofChina, grant number 51808546.

语种：英文

外文关键词：rolling shear; cross-laminated timber; wood mechanics; wood; timber structure

摘要：Rolling shear modulus and strength are the key factors affecting the mechanical performance of some wood products such as cross-laminated timber (CLT). As reported, rolling shear property strongly depends on the sawing pattern such as the aspect ratio and grain direction (grain mode). However, the mechanism behind this phenomenon has not yet been clarified. In this work, the rolling shear modulus and strength of spruce-pine-fir (SPF) with different grain modes and aspect ratios were experimentally investigated. In addition, a theoretical investigation was carried out to reveal the mechanism behind this phenomenon. The results exhibited that the rolling shear moduli of 0 degrees and 90 degrees grain-mode wood were the same. This value can be called the pure rolling shear modulus. Rolling shear modulus of wood with angles other than 0 degrees and 90 degrees can be calculated from the pure rolling shear modulus and grain angle. Therefore, this modulus can be called the apparent rolling shear modulus. Thus, using 0 degrees and 90 degrees grain-mode specimens to determine the pure rolling shear modulus and strength of wood is recommended.