Research on Tensile Properties and Damage Mechanism of Larix Wood Along Grain

Wenxian Yan

doi:10.62051/ijmsts.v2n1.07

Authors

Wenxian Yan

DOI:

https://doi.org/10.62051/ijmsts.v2n1.07

Keywords:

Material properties, Fracture morphology, Intrinsic modeling, SEM

Abstract

In order to explore the tensile properties and damage mechanism of larch wood along grain, Northeast Larch was taken as the research object. The deformation characteristics, failure mode and stress-strain curve properties of larch wood under tension along grain direction were analyzed by monotonic tensile test on 12 specimens. By means of scanning electron microscopy, the damage and fracture characteristics of wood fiber were analyzed from the microscopic point of view, and the mono-stress failure mechanism of wood was further revealed. The results show that the body of larch wood can be divided into three stages: rapid growth, slow growth and brittle fracture. Due to the difference between early and late wood tracheids, longitudinal splitting and transverse tearing of tracheid walls usually occur. On this basis, a constitutive model was established to describe the longitudinal tension of larch wood.

References

[1] SHAO Yali, AN Zhen, XING Xinting et al. Progress of research on mechanical properties and application of larch wood [J]. Wood processing machinery, 2011, 22(03):46-49+37. DOI:10.13594/j.cnki.mcjgjx.2011.03.011.

[2] Zhang Lipeng, Xie Qifang, Liu Yijin, Wu Yajie. Research on the mechanical properties and constitutive model of wood under parallel-to-grain cyclic loading. China Civil Engineering Journal, 2024, 57(3): 42-58.

[3] YANG Jiyu; BI Yujin; WANG Xinzhou; PAN Biao; College of Materials Science and Engineering, Nanjing Forestry University; Physical and tensile properties of compression wood of Taxodium hybrid ‘Zhongshanshan’ [J]. Journal of Forestry Engineering, 2023, 8(02): 59-67. DOI:10.13360/j.issn.2096-1359.202208004.

[4] Gong Cuizhi, Liu Yixing, Wang Qiang, Liu Wei. Meso-Scale Experimental Investigation and Strain Fields Analysis of Tensile Tests on Microtomed Slices of Picea jezoensis var. microsperma Sample [J]. Scientia Silvae Sinicae, 2008, (03):166-169.

[5] Khennane A, Khelifa M, Bleron L, et al. Numerical modelling of ductile damage evolution in tensile and bending tests of timber structures [J]. Mechanics of Materials, 2014, 68: 228-236.

[6] WU Yiqiang; Central South University of Forestry & Technology; Newly advances in wood science and technology [J]. Journal of Central South University of Forestry & Technology, 2021, 41(01):1-28. DOI:10.14067/j.cnki.1673-923x.2021.01.001.

[7] LIU Weiqing; YANG Huifeng. Research progress on modern timber structures [J]. Journal of Building Structures, 2019, 40(02):16-43. DOI:10.14006/j.jzjgxb.2019.02.002.

[8] ZHAO Hongtie, ZHANG Fengliang, XUE Jianyang, XIE Qifang, ZHANG Xicheng, MA Hui. Research review on structural performance of ancient timber structure [J]. Journal of Building Structures, 2012, 33(08):1-10. DOI:10.14006/j.jzjgxb.2012.08.002.

[9] WANG Anxuan, ZHANG Huagang, YANG Jiaojiao, WU Xiaoqiang, WU Shaoyuan. Experimental Study on the Tensile Strength and Stress-Strain Curve of Imitation Wood Material [J]. Journal of Guizhou University (Natural Sciences), 2024, 41(02):110-115. DOI:10.15958/j.cnki.gdxbzrb.2024.02.15.