Compressive behavior and failure modes of the wood-based double X-type lattice sandwich structure. (July 2020)

• Record Type: Journal Article
• Authors: Zheng, Tengteng; Yan, Hongzhen; Li, Shuai; Cheng, Yanpeng; Zou, Liuxiao; Hu, Yingcheng
• Is Part Of: Journal of building engineering. Volume 30(2020)
• Publication Date: 2020-07
• Subjects: Double X-type -- Lattice sandwich structure -- Compressive behavior -- Failure modes; Building -- Periodicals; 690.05
• DOI: 10.1016/j.jobe.2020.101176
• Languages: English
• ISSNs: 2352-7102

Abstract

Abstract: In this paper, a wood-based double X-type lattice sandwich structure was manufactured where wood-plastic composites (WPC) and Oriented Strand Boards (OSB) were used as panels, birch and glass fiber reinforced plastic (GFRP) were used as cores via a type of insertion-glue method. The compressive behavior and failure modes of the wood-based double X-type lattice sandwich structure were investigated by a flatwise compressive test and an analytical model. Results from the flatwise compressive test and the analytical model showed that the failure modes of the combination of WPC + GFRP and OSB + GFRP were primarily panel failure, while the failure modes of the combination of WPC + birch and OSB + birch were primarily core shear failure. The diameter of the core influenced the compressive performance of the double X-type lattice sandwich structure. The combination of OSB + birch with both core and panel damaged had better compression performance. The theoretical model was better suited for the combination of OSB + birch. The combination of OSB + GFRP and OSB + birch had larger specific strength and modulus, which was lighter in weight and higher in strength. Highlights: Compression performance of the combination of OSB+birch was significantly improved. The specific strength and modulus were analysed in the design of configurations. A theoretical model is established to study the failure modes and compression behaviour.