Evidence of negative Poisson’s ratio in wood from finite element analysis and off-axis compression experiments

Marmier, A.; Biesheuvel, Stefan; Elmalik, Mohamedosman; Kirke, Alexander; Langhof, Max; Paiva, João Pedro; Toudup, Joshua; Evans, K.

doi:10.1016/j.matlet.2017.09.026

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…The green dot on the graphs indicates the maximum of the composite desirability function. smaller, about values of 0.0574 and 0.1007 even very close to zero for some wooden materials and composite materials [27,28]. Therefore, the difference obtained between both studies can be related to the consideration in the measurement, in which Ramírez-Gómez et al was interested in particles' interaction; meanwhile the present research focused in a macroscopic method by measuring the deformation in the whole briquette.…”

Section: Discussionmentioning

confidence: 68%

“…The wide difference between both studies could be due to Ramírez-Gómez et al developing some tests to obtain mechanical properties for briquettes at a particle level, so the modulus of elasticity was measured using a texture analyzer [26]. The main limitation of this study was that they assume a Poisson's ratio of 0.33, that could be smaller, about values of 0.0574 and 0.1007 even very close to zero for some wooden materials and composite materials [27,28]. Therefore, the difference obtained between both studies can be related to the consideration in the measurement, in which Ramírez-Gómez et al was interested in particles' interaction; meanwhile the present research focused in a macroscopic method by measuring the deformation in the whole briquette.…”

Section: Discussionmentioning

confidence: 91%

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Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust

2020

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In search of guaranteeing global energy requirements, waste from different agricultural, forestry and industrial sources is presented as a renewable and sustainable energy source. The manufacture of solid fuels from biomass based on the densification of this to improve its mechanical and energy properties is one of the mechanisms of viable energy production from the technical-economic point of view. The biomass mixture is one of the topics currently researched, in which various factors can affect the final behavior of the briquettes. In this research the influence on the mechanical properties of briquettes obtained from the mixture between two biomasses is studied: rice husk and pine sawdust. A mixed factorial experimental factorial design is used, in which the process temperature, the proportion of the rice husk biomass over the total mass, and the compaction time are defined as experimental factors. Experimental statistical models are obtained that partially explain the behavior of several responses that characterize the mechanical properties of the briquettes based on the selected independent parameters. It was found that the mechanical durability of the briquettes is higher than 97.5%, meets the existing standards, like German Institute for Standardization (DIN) 51731, Theological Institute Batista Ebenézer (ITEBE) SS187120 or International Organization for Standardization (ISO) 17225-2, for a compaction temperature of 110 °C and a proportion of rice husk that does not exceed 60% of the total biomass mixture in the briquette. The compaction time was also statistically significant to achieve a briquettes density and an appropriate elasticity modulus in the briquettes. The results of this research are of interest and can serve as a starting point for the design of the industrial process of densification of these two mixed biomasses.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 91%

Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust

2020

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“…Therefore, this paper introduces the finite element method. It analyzes the problem into several small finite elements (Marmier et al 2018) and finds the approximate solution of each finite element. Finally, an approximate solution is obtained for the whole problem.…”

Section: Numerical Simulationmentioning

confidence: 99%

Cross-laminated timber design by flattened bamboo based on near-infrared spectroscopy and finite element analysis

Zhang

et al. 2021

BioRes

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Bamboo-wood composite cross-laminated timber (BCLT) is a new kind of wood structure material. Studies of the mechanical properties of BCLT have the potential to improve its utilization. Compared with the traditional testing method, this paper designs a fast and effective nondestructive testing method. Three types of composite BCLT plates were designed and made. Multi-point sampling of unit-converted timber was done using a 900-1700 nm NIR spectrometer. Mechanical properties of the unit converted timber were obtained through a four-point bending experiment. The data set consisted of near-infrared spectrum data and mechanical property data. The NIR prediction model was obtained by partial least squares method. The coefficients of determination for the density, MOR and MOE prediction models were 0.88, 0.88, and 0.85, respectively. Finally, the finite element modeling analysis of BCLT plate was carried out according to the element material prediction model, and the prediction of mechanical properties of BCLT plate was achieved. For the three BCLT plates, the prediction error of the finite element model was less than 10%, showing that the finite element analysis method is feasible to predict the mechanical properties of BCLT plate.

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“…Compared with bamboo, wood has a stronger anisotropy in its microstructure. Through the combination of geometric modeling, finite element analysis, and off-axis compression tests, Arnaud Marmier [8] demonstrated that the negative Poisson's ratio of wood has unusual elastic properties.…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanical Properties of Bionic Protection and Self-Recovery Structures

Guo

Dong

et al. 2020

Materials

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A novel protective structure, based on shrimp chela structure and the shape of odontodactylus scyllarus, has been shown to improve impact resistance and energy absorption. A finite element model of NiTi alloy with shape memory was constructed based on the basic principles of structural bionics. The protective structure utilizes NiTi alloy as the matrix, a material with many advantages including excellent compression energy absorption, reusability after unloading, and long life. The mechanical properties of the single-layer model were obtained by static crushing experiments and numerical simulations. Building upon the idea of the monolayer bionic structure design, a two-layer structure is also conceived. Both single-layer and double-layer structures have excellent compression energy absorption and self-recovery capabilities. Compared with the single-layer structure, the double-layer structure showed larger compression deformation and exhibited better energy absorption capacity. These results have important academic and practical significance for improving the impact resistance of protective armor. Our study makes it possible to repair automatic rebounds under the action of pressure load and improves the endurance and material utilization rate of other protective structures.

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Evidence of negative Poisson’s ratio in wood from finite element analysis and off-axis compression experiments

Cited by 6 publications

References 8 publications

Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust

Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust

Cross-laminated timber design by flattened bamboo based on near-infrared spectroscopy and finite element analysis

Study on the Mechanical Properties of Bionic Protection and Self-Recovery Structures

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