Experimental characterization and detailed micro-modeling of multi-perforated clay brick masonry structural response

Sandoval, Cristián; Arnau, Oriol

doi:10.1617/s11527-016-0888-3

Cited by 46 publications

(23 citation statements)

References 29 publications

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“…Despite serving as a standard test method and been widely used [13,26,27], the interpretation of triplet tests is difficult because the two joints do not fail at the same time [28]. In reality, the mortar properties of the two joints are not the same.…”

Section: Discussion On Triplet Testmentioning

confidence: 99%

“…To better simulate the failure process and estimate more accurately the stress distribution for a small scale test like a shear test, a full representation of the geometry, i.e., representing brick, mortar and interfaces in the model, is necessary. This is known as detailed micro-modeling approach [5,8,[13][14][15]. Previous studies that used such modeling approaches have not been able to reproduce the full force-displacement relation for simple shear tests (e.g., [5,13,16]).…”

Section: Introductionmentioning

confidence: 99%

“…This is known as detailed micro-modeling approach [5,8,[13][14][15]. Previous studies that used such modeling approaches have not been able to reproduce the full force-displacement relation for simple shear tests (e.g., [5,13,16]). This paper has five objectives: (1) evaluating to which extent conclusions on the performance of the test setups that were drawn from elastic analysis are representative when evaluating the maximum shear…”

Section: Introductionmentioning

confidence: 99%

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Numerical evaluation of test setups for determining the shear strength of masonry

2018

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The bond shear strength between masonry units and mortar is the weakest link in a masonry wall. Different material tests have been developed in order to characterize this bond behaviour. The objective of this study is to evaluate three common test setups through non-linear finite element analysis. The simulation method is based on our recent development of cohesive elements, which allows for the first time to fully capture the force-deformation characteristic of shear tests in 3D from the onset of loading until the residual shear strength and to retrieve typical shear failure modes observed in experiments. This study provides new insights into our understanding and interpretation of such shear tests: (1) elastic analysis, which has been widely used in the past, does not yield a stress distribution that is representative of the stress distribution at maximum resistance; (2) while friction coefficient is well estimated (the error is less than 10%), the local cohesion is underestimated by all three test setups of which the error lies between 13 and 32%;(3) the randomness of the material properties leads to a further underestimation of the mean value of the local cohesion; (4) differences in the material properties of the two joints of the triplet test units do not jeopardize the applicability of this test setup and estimations of the mean properties are obtained with similar reliability as for couplet tests.

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Section: Discussion On Triplet Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical evaluation of test setups for determining the shear strength of masonry

2018

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“…. 2.8. modelo numérico para simulação de estrutura de alvenaria em microescala [Sandoval and Arnau, 2016]. .…”

Section: Introductionunclassified

“…Uma vantagem deste modeloé sua representação mais próxima do modelo físico, ao custo de um maior esforço computacional, devido ao número de graus de liberdade introduzido na discretização em elementos finitos neste nível de visualização, quando comparado ao modelo macroescala. A Figura 2.8 ilustra um exemplo de modelo em microescala desenvolvido porSandoval and Arnau [2016].…”

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Modelagem numérica de juntas de argamassa em estruturas de alvenaria utilizando elementos finitos com alta razão de aspecto.

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This work presents a novel numerical model to simulate the failure process in masonry structures subjected to static loads via finite element method. Brick and mortar joints are modeled separately with their own constitutive equations. Interface finite element with high aspect ratio are used to simulate the mortar interface and inserted by the mesh fragmentation technique. The main advantage of this strategy is supported by the fact that, as the aspect ratio of a standard low-order solid finite element increases, the element strains also increase, approaching the same kinematics as the Continuum Strong Discontinuity Approach. A constitutive model was developed, based on the continuum damage mechanics, in order to represent the behavior of the interface finite elements. This model is able to simulate the creation and propagation of cracks, as well as, the frictional effects in dependence on stress confinement on the interfaces. Furthermore, as the objective of this work aims to simulate the failure in the mortar joints, the brick elements are assumed as linear elastic material. Three node standard triangular finite element are used to represent the bricks. Several numerical models are carried out. Initially, basics tests are show in order to demonstrate the main characteristics of the proposed model subjected to tensile, compression and shear loads. Subsequently, masonry structures are subjected to static loads are analyzed and the results compared with the experimental responses in order to validate the proposed model. This technique proved to be very promising for the simulation of failure onset and propagation in mortar joints of masonry structures.

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Discontinuous Dynamics of Santa Maria Annunziata Church Under Seismic Loading: A Non-smooth Contact Dynamics Approach

Schiavoni,

Standoli,

Bianconi

et al. 2023

RILEM Bookseries

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Experimental characterization and detailed micro-modeling of multi-perforated clay brick masonry structural response

Cited by 46 publications

References 29 publications

Numerical evaluation of test setups for determining the shear strength of masonry

Numerical evaluation of test setups for determining the shear strength of masonry

Modelagem numérica de juntas de argamassa em estruturas de alvenaria utilizando elementos finitos com alta razão de aspecto.

Discontinuous Dynamics of Santa Maria Annunziata Church Under Seismic Loading: A Non-smooth Contact Dynamics Approach

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