Experimental and numerical analyses of unreinforced masonry wall components and building

Choudhury, Thainswemong; Kaushik, Hemant B.

doi:10.1016/j.conbuildmat.2020.119599

Cited by 28 publications

(15 citation statements)

References 30 publications

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“…3. Numerical and experimental analyses of a similar prototype was also carried out by Choudhury et al (2020) who presented two FE modelling approaches using concrete damage plasticity model and a two-step Fig. 2 Experimental test set-up of URM building (Shahzada et al 2012) homogenization model.…”

Section: Benchmark Masonry Building-case Studymentioning

confidence: 99%

“…Based on the studies on masonry buildings in developing countries such as India (Singh et al 2013;Sarkar et al 2015;Kadam et al 2020;Choudhury et al 2020), Nepal (Habieb et al 2018;Giordano et al 2020), Pakistan (Shahzada et al 2012) and Iran (Bhakshi and Karimi 2008) as available in the literature, the compressive strength ( f c ) of masonry varies from 2.0 MPa to 6.0 MPa, tensile strength varies from 0.04 f c to 0.12 f c , and shear strength varies from 0.02 f c to 0.07 f c . A wide variation is observed in the elastic modulus of the masonry in developing countries, ranging from 400 to 2200 MPa.…”

Section: Numerical Macro-modelling Options Selected In This Studymentioning

confidence: 99%

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Comparative assessment of finite element macro-modelling approaches for seismic analysis of non-engineered masonry constructions

Ravichandran

Losanno

Parisi

2021

Bull Earthquake Eng

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All around the world, non-engineered masonry constructions (NECs) typically have high vulnerability to seismic ground motion, resulting in heavy damage and severe casualties after earthquakes. Even though a number of computational strategies have been developed for seismic analysis of unreinforced masonry structures, a few studies have focussed on NECs located in developing countries. In this paper, different modelling options for finite element analysis of non-engineered masonry buildings are investigated. The goal of the study was to identify the modelling option with the best trade-off between computational burden and accuracy of results, in view of seismic risk assessment of NECs at regional scale. Based on the experimental behaviour of a single-storey structure representative of Indian non-engineered masonry buildings, the output of seismic response analysis of refined 3D models in ANSYS was compared to that of a simplified model based on 2D, nonlinear, layered shell elements in SAP2000. The numerical-experimental comparison was carried out under incremental static lateral loading, whereas nonlinear time history analysis was performed to investigate the dynamic performance of the case-study structure. Analysis results show that the simplified model can be a computationally efficient modelling option for both nonlinear static and dynamic analyses, particularly in case of force-based approaches for design and assessment of base isolation systems aimed at the large-scale seismic vulnerability mitigation of NECs.

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Section: Benchmark Masonry Building-case Studymentioning

confidence: 99%

Section: Numerical Macro-modelling Options Selected In This Studymentioning

confidence: 99%

Comparative assessment of finite element macro-modelling approaches for seismic analysis of non-engineered masonry constructions

Ravichandran

Losanno

Parisi

2021

Bull Earthquake Eng

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“…They are (1) comparatively higher strength units and lower strength mortar, (2) comparatively higher strength mortar and lower strength units, (3) relatively low strength units and mortar and (4) comparatively higher strength units to relatively higher strength mortars. Subsequently, the mechanical characteristics of masonry made with diverse unit-to mortar combinations are different to each other, as their individual characteristics contribute to the overall compression behaviour of the masonry [ 36 , 37 , 38 ]. Thus, an appropriate analytical model should be able to predict the cyclic compression behaviour of different masonry assemblies.…”

Section: Experimental Programmementioning

confidence: 99%

Experimental and Analytical Study of Masonry Subjected to Uniaxial Cyclic Compression

et al. 2020

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Structural evaluation of masonry against dynamic seismic actions invariably requires appropriate cyclic compression constitutive models. However, not many research studies have been dedicated to date to investigate the cyclic compression behaviour of masonry. Therefore, series of experimental investigation followed by analytical model verification were employed in this research to better understand the cyclic compression characteristics of masonry. Twelve masonry wallettes were experimentally tested under cyclic compression loading with different unit-to-mortar assemblies, which are commonly found in masonry structures. The experimental results indicated that the cyclic compression behaviour is greatly influenced by the masonry compressive strength and deformation properties. Thereafter, the ability of five literature analytical models to predict the masonry structural response under cyclic compression loading was investigated. The advantages and limitations of these models are presented and discussed, and the most appropriate analytical model to define the cyclic compression characteristics of masonry has been evaluated and reported. The suggested analytical model is shown to predict the cyclic compression characteristics of different masonry assemblies such as the envelop response, the stiffness degradation, the plastic strain history of the unloading and reloading stages.

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“…Panto et al [7] numerically examined the masonry walls under the off-plane load using 3D discrete macro element models. Thainswemong et al [8] conducted a numerical and experimental study on a masonry wall. In the study, isotropic elastic damaging 3D modeling and two-step homogenized FEM was used to predict the fracture behavior of masonry wall, and the model was reasonably accurate compared to the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of masonry wall under underground waves

2021

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The dynamic behavior of structures has always received considerable attention. The dynamic behavior of structures requires a suitable numerical modeling method for the behavior of structures under dynamic loads to be illustrated. In this study, the response of two identical unreinforced masonry walls to the underground blast was examined. The experimental variables were the horizontal distance from the explosion point and the depth in which the explosives were located. After examining the behavior of the masonry walls under high-frequency dynamic loads, different numerical models were applied to simulate the dynamic behavior of these two walls against the underground blast experiments. Thus, several different factors, including yield criterion, types of Meso and macro modeling for the masonry wall, and topography of the site were investigated. Finally, due to the degree of accuracy required, it was concluded that each of the methods can be used; however, the most appropriate and accurate modeling method for the unreinforced masonry wall is the frictional-cohesive zone material and modified Mohr-Coulomb model, which provided accurate and precise responses.

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Experimental and numerical analyses of unreinforced masonry wall components and building

Cited by 28 publications

References 30 publications

Comparative assessment of finite element macro-modelling approaches for seismic analysis of non-engineered masonry constructions

Comparative assessment of finite element macro-modelling approaches for seismic analysis of non-engineered masonry constructions

Experimental and Analytical Study of Masonry Subjected to Uniaxial Cyclic Compression

Numerical modeling of masonry wall under underground waves

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