Two-dimensional computational framework of meso-scale rigid and line interface elements for masonry structures

Dolatshahi, Kiarash M.; Aref, Amjad J.

doi:10.1016/j.engstruct.2011.07.030

Cited by 52 publications

(30 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The integration of Eq (12) has been performed according to a uniform fibre discretation of the adjacent elements, as depicted in Figure 5, where the masonry macroelements p and q, have been discretised according to The shear sliding behaviour of adjacent elements, along the interfaces, being associated to a single degree of freedom, has been characterised according to a uniaxial nonlinear behavior, as clarified in the next section. 13 It is worth to notice that, the choice to concentrate the mechanical properties of the connected elements in zero-thickness interfaces is common to other discrete numerical approaches such for example the applied element method [30]- [34] and the rigid body spring model [35]- [38], however these latter strategies do not operate at the macro-scale.…”

Section: The Interface Stiffness Matrixmentioning

confidence: 99%

A Discrete Macro-Element Method (DMEM) for the nonlinear structural assessment of masonry arches

Cannizzaro

Pantò

Caddemi

et al. 2018

Engineering Structures

View full text Add to dashboard Cite

The structural response of masonry arches is strongly dominated by the arch geometry, the stone block dimensions and the interaction with backfill material or surrounding walls. Due to their intrinsic discontinuous nature, the nonlinear structural response of these key historical structures can be efficiently modelled in the context of discrete element approaches. Smeared crack finite elements models, based on the assumption of homogenised media and spread plasticity, fail to rigorously predict the actual collapse behaviour of such structures, that are generally governed by rocking and sliding mechanisms along mortar joints between stone blocks. In this paper a new Discrete Macro-Element Method (DMEM) for predicting the nonlinear structural behaviour of masonry arches is proposed. The method is based on a macro-element discretization in which each plane element interacts with the adjacent elements through zero-thickness interfaces and whose internal deformability is related to a single degree of freedom only. Both experimental and numerical validations show the capability of the proposed approach to be applied for the prediction of the non-linear response of masonry arch structures under different loading conditions.

show abstract

Section: The Interface Stiffness Matrixmentioning

confidence: 99%

A Discrete Macro-Element Method (DMEM) for the nonlinear structural assessment of masonry arches

Cannizzaro

Pantò

Caddemi

et al. 2018

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…This research study is mostly related to the experimental investigation of the seismic behaviour of brick internal partitions. Further studies will be conducted on numerical simulations, considering different refined models, such as [35][36][37].…”

Section: Damage Descriptionmentioning

confidence: 99%

Shake table tests for the seismic assessment of hollow brick internal partitions

Petrone

Magliulo

Manfredi

2014

Engineering Structures

View full text Add to dashboard Cite

The collapse of hollow brick internal partitions is one of the most widely reported nonstructural damage after an earthquake, especially in the European area. Full-scale experimental tests on standard hollow brick partitions are described in the paper. In particular, bidirectional shaking table tests are performed in order to investigate the seismic performance of hollow brick partitions, subjecting the partition simultaneously to interstorey relative displacements in their own plane and accelerations in the out of plane direction. A steel test frame is properly defined in order to simulate the seismic effects at a generic building storey. A set of five couples of accelerograms are selected matching the target response spectrum provided by the U.S. code for nonstructural components in order to investigate a wide range of seismic input. Three damage states are considered in this study and correlated to an engineering demand parameter, i.e. the interstorey drift ratio, through the use of a damage scheme. The tested specimen exhibits significant damage for 0.3% interstorey drift and extensive damage for drift close to 1%. The correlation between the dynamic characteristics of the test setup, in terms of damping ratio and natural frequency, and the recorded damage is shown

show abstract

“…23,[28][29][30][31][32] The numerical models of URM walls fall mainly into 2 groups. The first group of models is referred to as meso-scale models, and in this approach the mortar joint is represented by interface elements [28][29][30][33][34][35] or by continuum elements and contact and cohesive elements at the interfaces. 36 In the second approach, the mortar and bricks are modeled as a homogenous continuum.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on factors that influence the in‐plane drift capacity of unreinforced masonry walls

Dolatshahi

Nikoukalam

Beyer

2018

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

Summary Displacement‐based assessment procedures require as input reliable estimates of the deformation capacity of all structural elements. For unreinforced masonry (URM) walls, current design codes specify the in‐plane deformation capacity as empirical equations of interstory drift. National codes differ with regard to the parameters that are considered in these empirical drift capacity equations, but the inhomogeneity of datasets on URM wall tests renders it difficult to validate the hypotheses with the currently available experimental data. This paper contributes to the future development of such empirical relationships by investigating the sensitivity of the drift capacity to the shear span, the aspect ratio, the axial load ratio, and the size of the wall. For this purpose, finite element models of URM walls are developed in Abaqus/Explicit and validated against a set of experimental results. The results show that the axial load ratio, the shear span, and the wall size are among the factors that influence the drift capacity the most. Empirical equations are mainly derived from test results on small walls, and the numerical results suggest that this can lead to a significant overestimation of the drift capacity for larger walls.

show abstract

Two-dimensional computational framework of meso-scale rigid and line interface elements for masonry structures

Cited by 52 publications

References 6 publications

A Discrete Macro-Element Method (DMEM) for the nonlinear structural assessment of masonry arches

A Discrete Macro-Element Method (DMEM) for the nonlinear structural assessment of masonry arches

Shake table tests for the seismic assessment of hollow brick internal partitions

Numerical study on factors that influence the in‐plane drift capacity of unreinforced masonry walls

Contact Info

Product

Resources

About