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Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method

Authorized Users Only
2020
Authors
Marjanović, Miroslav
Marković, Nemanja
Damnjanović, Emilija
Cvetković, Radovan
Article (Published version)
Metadata
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Abstract
Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering, as full size walls or light floor structures. Due to their low environmental impact, excellent thermal characteristics and high mechanical performance, they are being extensively applied instead of conventional mineral-based building materials. The thick and orthogonal structure of CLT provides the considerable stiffness with the low weight and makes such panels particularly suitable in seismic-prone areas. The ease of assembly allows prefabrication and reduces construction time and cost. Current models for calculating the stress-deformation state of a CLT loaded out-of-plane mainly emerged from the long tradition of using very simple one-dimensional (beam-like) elements in timber structures. The paper tends to overcome some limitations of the current models by using the full-layerwise plate theory (FLWT) of Reddy, serving as a basis for the implementation of layered fin...ite elements. The proposed model accounts for the complex 3D stress state in CLT loaded out-of-plane and implies an original procedure for stress calculation. It is implemented using the original object-oriented MATLAB framework, while the graphical user interface for pre- and post-processing is developed using GiD. The presented approach is validated using the available numerical and experimental data in the literature, and compared against the commonly used methods for the design of CLT. Finally, the 3D stress-deformation state in the CLT slab of complex shape (commonly used in building structures) is obtained using the FLWT-based finite elements. The results are validated against the numerical data from the commercial software, and then used for checking of the ultimate and serviceability limit states for CLT slab according to Eurocode 5. Excellent agreement of the obtained results confirmed the potential of the proposed model to become a promising tool for engineering design of CLT slabs of arbitrary geometry.

Keywords:
cross-laminated timber / layered finite element / FLWT / 3D stress field
Source:
Thin-Walled Structures, 2020, 157, 107156-
Publisher:
  • Elsevier
Funding / projects:
  • Research on condition assessment and improvement methods of civil engineering structures in view of their serviceability, load-bearing capacity, cost effectiveness and maintenance (RS-36048)
  • Towards development of sustainable cities: influence of traffic induced vibrations on buildings and humans (RS-36046)

DOI: 10.1016/j.tws.2020.107156

ISSN: 0263-8231

WoS: 000598099600002

Scopus: 2-s2.0-85091668890
[ Google Scholar ]
6
1
URI
https://grafar.grf.bg.ac.rs/handle/123456789/2075
Collections
  • Radovi istraživača / Researcher's publications
  • Катедра за техничку механику и теорију конструкција
Institution/Community
GraFar
TY  - JOUR
AU  - Marjanović, Miroslav
AU  - Marković, Nemanja
AU  - Damnjanović, Emilija
AU  - Cvetković, Radovan
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2075
AB  - Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering, as full size walls or light floor structures. Due to their low environmental impact, excellent thermal characteristics and high mechanical performance, they are being extensively applied instead of conventional mineral-based building materials. The thick and orthogonal structure of CLT provides the considerable stiffness with the low weight and makes such panels particularly suitable in seismic-prone areas. The ease of assembly allows prefabrication and reduces construction time and cost.
Current models for calculating the stress-deformation state of a CLT loaded out-of-plane mainly emerged from the long tradition of using very simple one-dimensional (beam-like) elements in timber structures. The paper tends to overcome some limitations of the current models by using the full-layerwise plate theory (FLWT) of Reddy, serving as a basis for the implementation of layered finite elements. The proposed model accounts for the complex 3D stress state in CLT loaded out-of-plane and implies an original procedure for stress calculation. It is implemented using the original object-oriented MATLAB framework, while the graphical user interface for pre- and post-processing is developed using GiD.
The presented approach is validated using the available numerical and experimental data in the literature, and compared against the commonly used methods for the design of CLT. Finally, the 3D stress-deformation state in the CLT slab of complex shape (commonly used in building structures) is obtained using the FLWT-based finite elements. The results are validated against the numerical data from the commercial software, and then used for checking of the ultimate and serviceability limit states for CLT slab according to Eurocode 5. Excellent agreement of the obtained results confirmed the potential of the proposed model to become a promising tool for engineering design of CLT slabs of arbitrary geometry.
PB  - Elsevier
T2  - Thin-Walled Structures
T1  - Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method
SP  - 107156
VL  - 157
DO  - 10.1016/j.tws.2020.107156
ER  - 
@article{
author = "Marjanović, Miroslav and Marković, Nemanja and Damnjanović, Emilija and Cvetković, Radovan",
year = "2020",
abstract = "Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering, as full size walls or light floor structures. Due to their low environmental impact, excellent thermal characteristics and high mechanical performance, they are being extensively applied instead of conventional mineral-based building materials. The thick and orthogonal structure of CLT provides the considerable stiffness with the low weight and makes such panels particularly suitable in seismic-prone areas. The ease of assembly allows prefabrication and reduces construction time and cost.
Current models for calculating the stress-deformation state of a CLT loaded out-of-plane mainly emerged from the long tradition of using very simple one-dimensional (beam-like) elements in timber structures. The paper tends to overcome some limitations of the current models by using the full-layerwise plate theory (FLWT) of Reddy, serving as a basis for the implementation of layered finite elements. The proposed model accounts for the complex 3D stress state in CLT loaded out-of-plane and implies an original procedure for stress calculation. It is implemented using the original object-oriented MATLAB framework, while the graphical user interface for pre- and post-processing is developed using GiD.
The presented approach is validated using the available numerical and experimental data in the literature, and compared against the commonly used methods for the design of CLT. Finally, the 3D stress-deformation state in the CLT slab of complex shape (commonly used in building structures) is obtained using the FLWT-based finite elements. The results are validated against the numerical data from the commercial software, and then used for checking of the ultimate and serviceability limit states for CLT slab according to Eurocode 5. Excellent agreement of the obtained results confirmed the potential of the proposed model to become a promising tool for engineering design of CLT slabs of arbitrary geometry.",
publisher = "Elsevier",
journal = "Thin-Walled Structures",
title = "Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method",
pages = "107156",
volume = "157",
doi = "10.1016/j.tws.2020.107156"
}
Marjanović, M., Marković, N., Damnjanović, E.,& Cvetković, R.. (2020). Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method. in Thin-Walled Structures
Elsevier., 157, 107156.
https://doi.org/10.1016/j.tws.2020.107156
Marjanović M, Marković N, Damnjanović E, Cvetković R. Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method. in Thin-Walled Structures. 2020;157:107156.
doi:10.1016/j.tws.2020.107156 .
Marjanović, Miroslav, Marković, Nemanja, Damnjanović, Emilija, Cvetković, Radovan, "Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method" in Thin-Walled Structures, 157 (2020):107156,
https://doi.org/10.1016/j.tws.2020.107156 . .

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