Size effect on bending strength of glued laminated timber predicted by a numerical simulation concept including discrete cracking

Vida, Christoffer; Lukacevic, Markus; Hochreiner, Georg; Füssl, Josef

doi:10.1016/j.matdes.2022.111550

Cited by 11 publications

(20 citation statements)

References 30 publications

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“…Introduction of glued laminated timber (Glulam): Glulam was developed in the 1930s. It involved bonding layers of timber together with adhesives to create large, strong, and versatile structural components [80]. c.…”

Section: The Concise Historical Background Of Clt Constructionmentioning

confidence: 99%

Views of Cross-Laminated Timber (CLT) Manufacturer Representatives around the World on CLT Practices and Its Future Outlook

Ilgın,

Karjalainen,

Mikkola

2023

Buildings

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Due to its recent emergence, there is a limited body of global market research available on CLT. Presently, the literature lacks comprehensive understanding regarding the present state, varied uses, and future outlook of CLT construction at a global level. The objective of this article is to address this knowledge gap by conducting semi-structured, in-depth interviews with CLT manufacturer representatives around the world, including Austria, Italy, Czech Republic, Sweden, Norway, Finland, Japan, Canada, and Uruguay. Critical findings emphasized that (1) the predominant mention was about the insufficient knowledge and experience within construction professionals; (2) a clear need for heightened expertise and training in the domain of CLT was underscored; (3) CLT was regarded as a favorable choice in efforts to combat climate change; (4) CLT was deemed highly appropriate for settings marked by variable climatic conditions; (5) CLT producers, particularly those with comprehensive, vertically integrated operations encompassing the entire processing cycle, remained unaffected by the rise in raw material costs; (6) the COVID-19 pandemic generally yielded positive impacts on the CLT market; (7) primary application of CLT, as emphasized by most manufacturers, is in residential and institutional projects; and (8) most manufacturers noted the expansive and boundless opportunities within the market, especially considering the climate crises as potential future avenues for the utilization of CLT. This article aims to advance the widespread adoption of CLT within the global construction sector. It will achieve this by elucidating the obstacles, possibilities, and forthcoming prospects associated with CLT.

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Section: The Concise Historical Background Of Clt Constructionmentioning

confidence: 99%

Views of Cross-Laminated Timber (CLT) Manufacturer Representatives around the World on CLT Practices and Its Future Outlook

Ilgın,

Karjalainen,

Mikkola

2023

Buildings

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“…In the next step, the implementation of more advanced crack modelling techniques [11,13] will also allow to represent in more detail the variability of, e.g., the strength properties of such timber products, leading to even better performance predictions, which have already successfully been shown for studying the so-called size effect of glulam [14,15].…”

Section: Clt and Moisturementioning

confidence: 99%

Innocrosslam - Adding Knowledge Towards Increased Use of Cross Laminated Timber (Clt)

Azinović

Serrano

Danielsson

et al. 2023

World Conference on Timber Engineering (WCTE 2023)

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The research project Innovative Solutions for Cross Laminated Timber Structures (InnoCrossLam) was recently finished. The project aimed at increasing the competitiveness of CLT as a versatile engineered product, by increasing its predictability in demanding design situations not covered by the guidelines of today, or standards and codes foreseeable in the near future (e.g., second generation of European design standards). This paper summarises the main project findings in the context of innovative CLT structures, such as: i. contemporary design approaches ii. the use of (non)linear FE modelling iii. experimental investigation of complex details for CLT structures, iv. investigation of multifunctional CLT. In this paper, the motivation behind the research topics within the project InnoCrossLam is explained and backed-up by exemplary results and discussion on future work.

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“…Based on an exact simulation using geometrical reconstructions of wooden boards with knots [17], homogenization procedures allow deriving metamodels similar to those in [21]. Such a simplified model allows the application to larger-scale structures or tasks, e.g., for the failure prediction of GTL beams [37], size-effect studies in GLT beams [38] or optimization of GLT beams [26].…”

Section: Conclusion and Summarymentioning

confidence: 99%

Simulation of Wood Fracture Mechanics Using the Phase Field Method for Fracture

Pech

Lukacevic

Füssl

2023

World Conference on Timber Engineering (WCTE 2023)

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Fracture mechanics simulations play a crucial role in predicting the failure of materials in various engineering applications. However, modeling fracture in inhomogeneous materials with complex microstructures is challenging. This work applies a non-brittle hybrid multi-phase field model to simulate wood failure. The approach is based on a stress-based split for orthotropic materials and includes multiple phase field variables, incorporating preferable fracture planes. The proposed model is initially applied to two examples, single-edge notched plates with varying fiber inclines and a wooden board with a single knot and spatially varying fiber directions. Both examples show that the model covers the effect of the wood microstructure on macroscopic crack propagation. Subsequently, the model is validated on experimental studies from the literature. We show that by choosing the input parameters, the tensile strength and the fracture energy release rate, in a reasonable range for wood, the model agrees well with the results of the experimental studies. Those findings open the application of the model to more complex situations like wooden boards with multiple knots and show that the used input parameters are not model-specific numerically tuned parameters but rather materialspecific quantities.

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Size effect on bending strength of glued laminated timber predicted by a numerical simulation concept including discrete cracking

Cited by 11 publications

References 30 publications

Views of Cross-Laminated Timber (CLT) Manufacturer Representatives around the World on CLT Practices and Its Future Outlook

Views of Cross-Laminated Timber (CLT) Manufacturer Representatives around the World on CLT Practices and Its Future Outlook

Innocrosslam - Adding Knowledge Towards Increased Use of Cross Laminated Timber (Clt)

Simulation of Wood Fracture Mechanics Using the Phase Field Method for Fracture

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