State of the art in multiaxial phenomenological failure criteria for wood members

Kasal, Bohumil; Leichti, Robert J.

doi:10.1002/pse.185

Cited by 36 publications

(23 citation statements)

References 35 publications

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“…A number of failure criteria applicable to timber have been developed, and various in depth reviews were published, e.g., Kasal and Leichti (2005). A commonly applied criterion was proposed by Norris (1962), the latter being based on von Mises-Hencky distortion energy hypothesis; it basically corresponds to a Tsai-Hill formulation.…”

Section: Capacity Prediction Of Timber Jointsmentioning

confidence: 99%

Capacity prediction of welded timber joints

2011

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Linear vibration welding of timber structural elements provides new opportunities to potentially achieve structural joints. This paper investigates to which extent welded joints can be considered for load-bearing structural joints. On the basis of a series of experimental and numerical investigations on a series of welded single-lap joints, failure modes were identified, and the associated failure criterion was quantified. A probabilistic method subsequently allowed accurately predicting the capacity of the tested wood welded joints exclusively based on objective input data, including an estimate of the scattering due to the material's inherent variability.

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Section: Capacity Prediction Of Timber Jointsmentioning

confidence: 99%

Capacity prediction of welded timber joints

2011

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“…Similarly to composites, wood is typical for twodimensional character and organized non-isotropic structure and as such can be categorised as orthotropic or transversely isotropic. It follows that strength theories developed for artificial composites can be used for prediction of wood strength [1,2]. Unfortunately, for some of these theories, it may be difficult to obtain specific coefficients experimentally, let us mention the issue of the interaction term [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Stochastic analysis is an alternative approach that is on the rise. It takes into consideration, among others, correlation of strength properties that we can treat as independent random variables [2].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Failure Criteria for Wood in Tensile-Shear Stress State

Šmídová

Kabele

2017

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Abstract. An orthotropic failure criterion enhancing the Lourenco s criterion by a shear strength multiplier and a maximum shear strength upper bound has been recently proposed and validated for timber under tensile and shear loading by the authors. The paper discusses its applicability for predicting strength in comparison with Tsai-Hill criterion, Hankinson s and Hyperbolic formula applying the two above mentioned enhancements of the Lourenco s criterion. Experimental data available in the literature for off-axis tensile and shear test of Sitka spruce (Picea sitchensis Carr.), Katsura (Cercidiphyllurn japonicurn Sieb. and Zucc.), Douglas fir (Pseudotsuga menziesii), Douglas fir laminated veneer and Cupiúba (Goupia glabra) are used for the purpose of this study.

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“…The continuum mechanics approach considers the nature and magnitude of stresses or strains, nowadays usually determined using Finite Element Analysis (FEA) and formerly by analytical formulae. Various failure criteria for wood have been developed, and various in-depth reviews were published, recently by Kasal and Leichti (2005). A commonly applied criterion was proposed by Norris (1962), see Eq.…”

Section: Introductionmentioning

confidence: 99%

“…A commonly applied criterion was proposed by Norris (1962), see Eq. 2: (Kasal and Leichti 2005). This limitation must be addressed before failure criteria can be reliably used to predict strength of timber connections.…”

Section: Introductionmentioning

confidence: 99%

Structural performance of rounded dovetail connections: experimental and numerical investigations

2010

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Rounded Dovetail Connections (RDC) are a relatively new wood-to-wood connection concept that, despite the lack of design guidance in standards, has become popular in timber construction due to the widespread of modern milling machinery. Because of the anisotropic nature of wood and the complex stress-strain state in RDC, the question of their dimensioning is very complex. Experimental and numerical investigations were carried out on full scale RDC used to connect two timber members as joist to beam connections subjected to quasi-static shear loading. The influence of two geometric parameters was investigated: the dovetail height (varied between 109 and 189 mm) and the flange angle (varied between 5 and 20°). Both, serviceability and ultimate limit states were studied using analysis of variance. It was found that the joint capacity (i) depends on the dovetail height, with an optimum of approximately 2/3 of the beam height and (ii) can be considered almost independent of the flange angle. The development and implementation of a numerical model for the design process of RDC was examined and good agreement between experimental and numerical load deformation curves validated the model, thus making it suitable for developing a method to predict RDC capacity. The paper proposes a probabilistic method to predict the capacity of RDC taking into account the scale sensitivity of the material strength, which is modelled using Weibull statistics, and considers not only the magnitude of the stress fields, but also the volume over which these stress peaks act. The proposed method has immediate actionable application for the improvement of RDC design. Tragverhalten von

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State of the art in multiaxial phenomenological failure criteria for wood members

Cited by 36 publications

References 35 publications

Capacity prediction of welded timber joints

Capacity prediction of welded timber joints

Comparison of Failure Criteria for Wood in Tensile-Shear Stress State

Structural performance of rounded dovetail connections: experimental and numerical investigations

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