Elastic response of cross-laminated timber panels using finite element and analytical techniques

Abstract

Cross-Laminated Timber (CLT) is an engineered timber composite that is finding increasing structural application in construction today. Analysis of the structural behavior of CLT can be carried out by various analytical and numerical methods. Due to the complex behavior of CLT, use of numerical modelling such as the Finite Element Method (FEM) offers a convenient approach to analysis. In this paper, simulation of the elastic behavior of 1-way and 2-way spanning CLT panels using the FEM program ABAQUS is presented. Various modelling choices are explored numerically with the results being evaluated against those from either a 3D analytical method known as the State Space Approach (SSA) or existing experimental data. Among the case studies examined is a novel boundary condition for the SSA solution. In general, the optimum finite element model produced reasonable levels of accuracy with an average relative error equal to 3% in comparison to the SSA and a maximum of 10% in comparison to the experimental results.

New formulation of the state space approach for asymmetrically supported laminated composite plates

“…This section aims to compare the FEM results with the SSA results to provide more context for the SSA's capability in this application. The FEM modelling approach in all presented case studies was based upon a previous numerical study by the authors 35 , this informed the choice of element type for the laminae and adhesive components. In the FEM model, 3D 20-node linear brick elements (C3D20) with 8-node 3D cohesive elements (COH3D8) 34 between each symmetric cross-ply will be used, as shown in Figure 5.…”

State of the Art of the Structural Behavior of Cross Laminated Timber by Finite Element Method

“…É possível analisar o comportamento estrutural do CLT por meio de vários métodos, sendo esses: experimentais, analíticos e/ou numéricos. Em busca de melhorar a precisão dos resultados pelo método analítico, pesquisadores estão se dedicando ao método numérico, sobretudo o Método dos Elementos Finitos (MEF) (ALBOSTAMI et al, 2020).…”

ENSUS2023 - XI Encontro de Sustentabilidade em Projeto

“…É possível analisar o comportamento estrutural do CLT por meio de vários métodos, sendo esses: experimentais, analíticos e/ou numéricos. Em busca de melhorar a precisão dos resultados pelo método analítico, pesquisadores estão se dedicando ao método numérico, sobretudo o Método dos Elementos Finitos (MEF) (ALBOSTAMI et al, 2020).…”