Compression behaviour of the wood-based X-type lattice sandwich structure
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ORIGINAL
Compression behaviour of the wood‑based X‑type lattice sandwich structure Liuxiao Zou1 · Tengteng Zheng1 · Shuai Li2 · Xin Zhao1 · Lifeng Wang1 · Yingcheng Hu1 Received: 7 September 2019 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this paper, a wood-based X-type lattice sandwich structure was manufactured via a type of insertion-glue method. Oriented strand board (OSB) was used as panel, birch was used as core and epoxy resin was used as adhesive. The compression behavior of the wood-based X-type lattice sandwich structure with different drilling depth (9 mm, 12 mm, and 15 mm), core spacing (12 mm, 30 mm and 48 mm) and core size (L50D8, L60D8) was investigated by a flatwise compressive test and a theoretical model was established to study the elastic constitutive relationship of the X-type lattice sandwich structure, including the equivalent compressive strength/modulus, and the specific strength. Results from the flatwise compressive test and the theoretical model showed that the failure modes of the wood-based X-type lattice sandwich structure were mainly shear failure of the core. The experimental values of compression modulus were less than the theoretical values. The deeper the depth of the drill hole, the shorter the core spacing, and the smaller the core size, the greater the compressive performance of the wood-based X-type lattice sandwich structure.
1 Introduction Wood has a higher strength-weight ratio and outstanding insulation, sound absorption, sound insulation, natural beauty, comfortable texture and other properties. These characteristics make wood and wood products more and more widely used in modern wood structures (Hu et al. 2018; Li et al. 2018c; Perrin et al. 2019; Barotto et al. 2018; Munir et al. 2019). However, natural high-quality forest resources have been over-harvested, and the significance of the remaining resources to protect soil erosion and maintain ecological balance is far more important than the significance of utilization. Low-quality timber such as fast-growing and high-yield plantation has become the main source of commercial timber. Therefore, the emphasis of processing and Liuxiao Zou and Tengteng Zheng contributed equally to this work. * Yingcheng Hu [email protected] 1
Key Laboratory of Bio‑Based Material Science and Technology of Ministry of Education of China, College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
Science and Technology on Advanced Composites in Special Environments Key Laboratory, Harbin Institute of Technology, Harbin 150001, China
2
utilization in the future is the in-depth development and high value-added utilization of advanced technologies of artificial fast-growing forests, low-quality wood, processing residues and biomass materials (Min and Zhi 2004; Wang et al. 2019; Nguyen et al. 2019; Zhang et al. 2018; Yuan et al. 2013). In addition, with the increasing awareness of environmental issues, the research of biomass composite materials based on renewab
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