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Numerical Study on De Elastic Buckling of CLT Walls Subjected to Compressive Loads

https://research.thinkwood.com/en/permalink/catalogue2169
Year of Publication
2019
Topic
Design and Systems
Connections
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Saavedra Flores, Erick
Saavedra, Karin
Pina, Juan Carlos
Yanez, Sergio
Guzmán, Carlos Felipe
Year of Publication
2019
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Design and Systems
Connections
Keywords
Buckling
Panels
Buckling Behavior
Buckling Loads
Conference
CompWood
Research Status
Complete
Summary
In this work, a numerical-experimental approach is used to study the elastic buckling of CLT panels. First, a finite element-based multi-scale model is developed to study the linear elastic buckling behaviour of CLT panels. The model incorporates wood’s most relevant microstructural features, such as the volume fraction of hemicellulose, lignin and cellulose, their mechanical and physical properties, microfibril angle, etc.; which are crucial to capture the inherent orthotropic nature of wood observed at the macroscopic level. Furthermore, the values of key microstructural parameters are determined through a parameter identification procedure, in which experimentally measured values of density and longitudinal Young’s modulus of radiata pine grown in Chile are used as target values. The model is successfully validated with results from buckling tests performed on CLT panels’ specimens with different thickness and slenderness ratios. The validation clearly shows the capability of the model to predict the buckling response of CLT panels. Finally, the model is used illustrate how parameters such as wood density and panel number of layers influence the buckling response of CLT panels.
Online Access
Free
Resource Link
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