Mechanical Efficiency and Biomechanical Performance of Innovative Sandwich-Like Composite Wall Biopanels - A Structural Alternative for Constructions in High-Risk Seismic and Windy Regions

Abstract:

The great potentials of wood species have not yet been fully tapped in Ecuador in order to propose feasible and eco-friendly alternatives that allow reducing/replacing conventional building materials. This investigation aims to determine the physical-mechanical properties of lightweight bidirectional sandwich-like composite wall panels made of bamboo (Dendrocalamus asper), melina (Gmelina arborea) and balsa (Ochroma pyramidale). To fulfil this purpose, 80 samples from four prototype biopanels were tested in accordance to the current American Society for Testing and Materials (ASTM) standards. The experimental results were validated and compensated by performing a total of 79 finite element analyses (FEA) that in turn allowed evaluating and analyzing both the mechanical efficiency and the biomechanical performance of the proposed biopanels. The results in this investigation showed sandwich-like composite wall biopanels with an enhanced mechanical efficiency that is up to nine times higher than steel, concrete, aluminum, wood and bricks. Results from the biomechanical analyses confirm the practical utilization of the proposed biopanels in low-rise and mid-rise buildings (i.e. between two and ten stories) located in high-risk seismic and windy regions. Thus, its implementation in the actual construction system will definitely implicate important upgrades in terms of structural optimization and sustainable practices. Indeed, the proposed wall biopanels are meant to be used in the rebuilding process of the dramatically affected areas during the 2016 Ecuador earthquake.

• Periodical: Solid State Phenomena (Volume 304)
• Pages: 81-88
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.304.81
• Online since: May 2020
• Authors: Oswaldo Mauricio González*, Peñaloza Marcos Andrés García, Zhang Hua Lun Barrigas, Bustamante Nathaly Saray Andino
• Keywords: Biomaterials, Biomechanics, Biomimetics, Dendrocalamus asper, Engineered Wood Products, Finite Element Analysis, Gmelina arborea, Mechanical Properties, Ochroma pyramidale

References

[1] L. Ye, H. Kanamori, J.-P. Avouac, L. Li, K. F. Cheung, and T. Lay, The 16 April 2016, MW 7.8 (MS 7.5) Ecuador earthquake: A quasi-repeat of the 1942 MS 7.5 earthquake and partial re-rupture of the 1906 MS 8.6 Colombia–Ecuador earthquake, Earth and Planetary Science Letters. 454 (2016) 248-258.

DOI: 10.1016/j.epsl.2016.09.006

[2] O. M. González, H. L. Barrigas, N. Andino, M. García, and M. Guachambala, Innovative Bio-composite Sandwich Wall Panels made of Coconut Bidirectional External Veneers and Balsa Lightweight Core as Alternative for Eco-friendly and Structural Building Applications in High-risk Seismic Regions, Materials Science and Engineering. 11 (2019) 88-98.

DOI: 10.21741/9781644900178-5

[3] D. McKeever, Engineered wood products: a response to the changing timber resource, Forest Products Laboratory. 123 (1997) 15.

[4] M. F. Ashby, Materials selection in mechanical design, third ed., Elsevier, Amsterdam, 2005, ISBN: 0-7506-6168-2.

[5] O. González, The Ingenious Tree of Life - A biomechanical Approach to Cocowood Science, first ed., Lambert Academic Publishing, Germany, 2018, ISBN: 9786139870004.

[6] U. G. Wegst, Bending efficiency through property gradients in bamboo, palm, and wood-based composites, Journal of the mechanical behavior of biomedical materials. 4 (2011) 744-755.

DOI: 10.1016/j.jmbbm.2011.02.013

[7] ASTM C364/C364M-16, Standard Test Method for Edgewise Compressive Strength of Sandwich Constructions, United States of America, (2016).

[8] ASTM C393, Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure, United States of America, (2011).

[9] ASTM C297, Standard Test Method for Flatwise Tensile Strength of Sandwich Constructions, United States of America, (2004).

[10] ASTM C273, Standard Test Method For Shear Properties of Sandwich Core Materials, United States of America, (2000).

[11] R. Ross, Wood handbook: wood as an engineering material, (2010).

[12] D. Hull, and T. Clyne, An introduction to composite materials, second ed., Cambridge University press, England, 2012, ISBN: 9781139170130.

[13] K. J. Niklas, Plant biomechanics: an engineering approach to plant form and function, first ed., University of Chicago press, Chicago and London, 1992, ISBN: 0226586316.

[14] AS/NZS 1170.2, Structural design actions, Part 2: Wind actions, Sydney - Australia, (2011).

[15] S. Cullen, Trees and wind: A practical consideration of the drag equation velocity exponent for urban tree risk management, Arboriculture & Urban Forestry. 31 (2005) 101.

DOI: 10.48044/jauf.2005.013

[16] A. Ugural, Mechanics of materials, first ed., John Wiley & Sons, Inc, Unitated States: New jersey Institute of Technology, 2008, ISBN: 9780471721154.