Finite Element Analysis of Composite Laminated Timber (CLT)

Proceedings

Alonso-Martínez, Mar¹  Martínez-Martínez, Juan Enrique²  Rabanal, Felipe Pedro Álvarez³ 

[1] Author to whom correspondence should be addressed.;Department of Construction and Manufacturing Engineering, University of Oviedo, 33204 Gijón, Spain;Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 July 2018

关键词: cross-laminated timber;    finite element analysis;    composites;   

DOI  :  10.3390/proceedings2231454

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In the research for sustainable construction, cross-laminated timber (CLT) has gained popularity and become a widely used engineered timber product. However, there are few numerical studies of the structural behaviour of CLT. Among other issues, the orthotropic properties of CLT complicate finite element analysis (FEA). This paper presents a finite element model (FEM) to predict the structural behaviour of CLT beams subjected to sustained flexural loading. This numerical model includes a material model based on the orthotropic material properties of different timber species. Furthermore, the orientation and the properties of each layer are considered. Most of the previous studies simulate CLT beams as a homogeneous material. However, in this work the CLT beam is modelled as a composite material made up of five layers with different orientations and properties. Bonded contacts are used to define the interaction between layers. In addition, nonlinearities, such as large displacement, are used to simulate the behaviour of CLT beams. The model provides the load-displacement relationship and stress concentration. Tsai-Wu failure criteria is used in the simulation to predict the failure modes of the CLT beams studied.

【 授权许可】

CC BY