Crespo Jorge, Majano-Majano Almudena, Lara-Bocanegra Antonio José, Guaita Manuel
Department of Agroforestry Engineering, University of Santiago de Compostela, c/ Benigno Ledo, 27002 Lugo, Spain.
Department of Building Structures and Physics, ETS Architecture, Universidad Politécnica de Madrid, Avda Juan de Herrera 4, 28040 Madrid, Spain.
Materials (Basel). 2020 Feb 18;13(4):906. doi: 10.3390/ma13040906.
Labill stands out as one of the hardwood species produced in Europe with prominent mechanical properties, which is undergoing a growing interest in extending added value. The development of engineered wood products with this species and its application in timber structures involving numerical finite element simulations requires knowledge of the mechanical properties for the different orthotropic material directions. The aim of the present study is to determine the main mechanical properties of from small clear specimens, necessary for the development of finite element models. The work provides experimental results on the ultimate capacity and modulus of elasticity considering different stresses: tension parallel and perpendicular to the grain, compression parallel and perpendicular to the grain (in radial and tangential directions), shear and longitudinal static bending. The work is complemented with experimental data on timber-to-timber friction coefficients for 0°, 45°, and 90° orientation angles, which are useful in the modeling of traditional joints. Very high values of ultimate stress and modulus of elasticity for the different mechanical properties were obtained, highlighting the great potential of this species for structural applications.
拉比尔是欧洲生产的具有突出机械性能的硬木树种之一，人们对其附加值拓展的兴趣与日俱增。用该树种开发工程木制品并将其应用于涉及数值有限元模拟的木结构，需要了解不同正交各向异性材料方向的机械性能。本研究的目的是从小尺寸无缺陷试件中确定有限元模型开发所需的主要机械性能。这项工作提供了考虑不同应力时的极限承载力和弹性模量的实验结果：平行和垂直于木纹的拉伸、平行和垂直于木纹（径向和切向）的压缩、剪切以及纵向静弯曲。该工作还补充了0°、45°和90°取向角的木材与木材摩擦系数的实验数据，这些数据在传统节点建模中很有用。不同机械性能的极限应力和弹性模量都取得了非常高的值，突出了该树种在结构应用方面的巨大潜力。
