A computational approach for the modelling of rolling shear cracks in cross-laminated timber structures

Saavedra Flores, E, Saavedra, K and Das, R 2015, 'A computational approach for the modelling of rolling shear cracks in cross-laminated timber structures', in G. R. Liu and Raj Das (ed.) Proceedings of the 6th International Conference on Computational Methods (ICCM 2015), Auckland, New Zealand, 14-17 July 2015, pp. 951-955.


Document type: Conference Paper
Collection: Conference Papers

Title A computational approach for the modelling of rolling shear cracks in cross-laminated timber structures
Author(s) Saavedra Flores, E
Saavedra, K
Das, R
Year 2015
Conference name ICCM 2015
Conference location Auckland, New Zealand
Conference dates 14-17 July 2015
Proceedings title Proceedings of the 6th International Conference on Computational Methods (ICCM 2015)
Editor(s) G. R. Liu and Raj Das
Publisher Scientech
Place of publication United States
Start page 951
End page 955
Total pages 5
Abstract This paper addresses the computational modelling of rolling shear cracks in cross-laminated timber structures. In order to predict the structural response, four spatial scales are interlinked within a multi-scale modelling framework. Material information is taken from the wood cell-wall at the order of few nanometers, wood fibres with dimensions of some micrometers and growth rings described by a few millimeters. A computational homogenisation scheme is adopted to determine the effective mechanical properties at each scale. The homogenised mechanical properties are then used to analyse the fourth (structural) scale represented by a cross-laminated timber plate with dimensions of the order of the meter. In order to simulate the cracking in the material, a cohesive zone model is adopted at the homogenised macroscopic scale. This approach allows us to model interlaminar and inter-fibre cracks. Our numerical simulations reveal the potential predictive capabilities of the present approach to investigate further wood and other natural materials.
Subjects Materials Engineering not elsewhere classified
Keyword(s) Cross-laminated timber
Rolling shear cracks
Multi-scale modelling
Copyright notice © 2015 This work is licensed under a Creative Commons Attribution 3.0 License.
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