Identification of material parameters for low bond strength masonry

Sarhosis, Vasilis; Sheng, Yong

doi:10.1016/j.engstruct.2013.12.013

Cited by 99 publications

(40 citation statements)

References 22 publications

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“…In addition, vertical predefined cracks were assigned to the middle of each brick element ( Figure 10). This is due to the fact that in masonry structures, as also evidenced in the current experimental failure patterns, most of the propagating cracks beyond being located in the mortar they also develop across the bricks [24,25].…”

Section: Development Of the Computational Models For Masonrymentioning

confidence: 80%

“…In the last two decades, the approach was applied successfully to model masonry structures by Lemos [23] and Giamundo et al [26] in which the collapse modes were typically governed by mechanisms in which the deformability of the blocks plays little or no role. Also, the possibility of frequent changes in the connectivity and the type of contact as well as marked nonlinearity induced by the inability of the masonry joints to withstand tension makes DE a suitable method for solving problems involving discontinuities as is the case with low bond strength masonry (Sarhosis & Sheng [24] and Sarhosis et al [25]). …”

Section: Introductionmentioning

confidence: 99%

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Retrofitting of masonry walls by using a mortar joint technique; experiments and numerical validation

Wang

Forth

Nikitas

et al. 2016

Engineering Structures

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Section: Development Of the Computational Models For Masonrymentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Retrofitting of masonry walls by using a mortar joint technique; experiments and numerical validation

Wang

Forth

Nikitas

et al. 2016

Engineering Structures

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“…Moreover, the rapid growth in computer power and modelling has resulted in the development of a large number of software packages used for the numerical analysis of complex engineering problems, such as the identification of problematic (low bond strength) material parameters in masonry structures [41]. The reason for this is that it is very difficult for the analytical modelling to measure and describe accurately the complicated problems associated with fracturing.…”

Section: Modelling Of Rock Fragmentation and Fluid Flow Problemsmentioning

confidence: 99%

Recent Developments in Multiscale and Multiphase Modelling of the Hydraulic Fracturing Process

Sheng

Sousani

Ingham

et al. 2015

Mathematical Problems in Engineering

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Recently hydraulic fracturing of rocks has received much attention not only for its economic importance but also for its potential environmental impact. The hydraulically fracturing technique has been widely used in the oil (EOR) and gas (EGR) industries, especially in the USA, to extract more oil/gas through the deep rock formations. Also there have been increasing interests in utilising the hydraulic fracturing technique in geological storage of CO 2 in recent years. In all cases, the design and implementation of the hydraulic fracturing process play a central role, highlighting the significance of research and development of this technique. However, the uncertainty behind the fracking mechanism has triggered public debates regarding the possible effect of this technique on human health and the environment. This has presented new challenges in the study of the hydraulic fracturing process. This paper describes the hydraulic fracturing mechanism and provides an overview of past and recent developments of the research performed towards better understandings of the hydraulic fracturing and its potential impacts, with particular emphasis on the development of modelling techniques and their implementation on the hydraulic fracturing.

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“…The structural behaviour of multi-drum masonry column differs from the behaviour of typical masonry walls panels and prisms, which consist of numerous blocks (bricks) that are usually bonded by mortar (Sarhosis & Sheng 2014;Giamundo et al 2014;Sarhosis et al 2015a;Sarhosis 2016a). The dynamic behaviour of multi-drum structures such as ancient columns shows a three-dimensional motion with a strong nonlinear character.…”

Section: Introductionmentioning

confidence: 99%

Non-linear static behaviour of ancient free-standing stone columns

Pulatsu

Sarhosis

Bretas

et al. 2017

Proceedings of the Institution of Civil Engineers - Structures

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This paper investigates the nonlinear static behaviour of blocky multi-drum ancient columns. A two-dimensional custom-made computational software based on the Discrete Element Method developed. In the computational model, the columns represented as an assemblage of distinct blocks connected together by zero thickness interfaces, which can open and/or close depending on the magnitude and direction of the stresses applied to them. Through nonlinear static analysis, capacity curves and corresponding failure mechanisms of each of the studied models obtained. The influence of different parameters, namely number of drums, geometrical properties and imperfections at columns, assessed to observe their influence on the response of drum assemblies. The results of analyses revealed that rigid overturning is the main collapse mechanisms under uniform horizontal forces. A combination of rigid and shear failure mechanisms might be obtained depending on geometric characteristics and choice of joint material properties used. Higher displacement capacity observed for columns constructed with larger number of drums. It was found that imperfections at the ancient columns have a significant influence on the lateral load resisting capacity. Therefore, structural analysis of undamaged state of the columns may not represent the actual capacity of the columns due to their very sensitive and highly nonlinear characteristics.

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Identification of material parameters for low bond strength masonry

Abstract: This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International licence Newcastle University ePrints -eprint.ncl.ac.uk Sarhosis V, Sheng Y. Identification of material parameters for low bond strength masonry.Engineering Structures 2014, 60, 100-110.

Cited by 99 publications

References 22 publications

Retrofitting of masonry walls by using a mortar joint technique; experiments and numerical validation

Retrofitting of masonry walls by using a mortar joint technique; experiments and numerical validation

Recent Developments in Multiscale and Multiphase Modelling of the Hydraulic Fracturing Process

Non-linear static behaviour of ancient free-standing stone columns

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