Short beam shear properties and failure modes of the wood-based X-type lattice sandwich structure
短横梁砍性质和基于木头的 X 类型格子的失败模式夹结构作者机构:Key Laboratory of Bio-based Material Science and TechnologyMinistry of EducationNortheast Forestry UniversityHarbin 150040People’s Republic of China
出 版 物:《Journal of Forestry Research》 (林业研究(英文版))
年 卷 期:2021年第32卷第2期
页 面:877-887页
核心收录:
学科分类:082902[工学-木材科学与技术] 08[工学] 0829[工学-林业工程]
基 金:supported by National Natural Science Foundation of China(31470581) Fundamental Research Funds for the Central Universities(2572016EBJ1)
主 题:X-type Lattice sandwich structure Failure modes Short beam shear properties Theoretical model
摘 要:A wood-based X-type lattice sandwich structure was manufactured by insertion-glue *** birch was used as core,and Oriented Strand Board was used as panel of the sandwich *** short beam shear properties and the failure modes of the wood-based X-type lattice sandwich structure with different core direction(vertical and parallel),unit specification(120 mm×60 mm and 60 mm×60 mm),core size(50 mm and 60 mm),and drilling depth(9 mm and 12 mm)were investigated by a short beam shear test and the establishment of a theoretical model to study the equivalent shear modulus and deflection response of the X-type lattice sandwich *** from the short beam shear test and the theoretical model showed that the failure modes of the wood-based X-type lattice sandwich structure were mainly the wrinkling and crushing of the panels under three-point bending *** experimental values of deflection response of various type specimens were higher than the theoretical values of *** the core direction of parallel,the smaller the unit specification is,the shorter the core size is,and the deeper the drilling depth is,the greater the short beam shear properties of the wood-based X-type lattice sandwich structure is.