Homogenization technique and damage model for old masonry material

Luciano, Raimondo; Sacco, Elio

doi:10.1016/s0020-7683(96)00167-9

Cited by 200 publications

(96 citation statements)

References 8 publications

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“…Recently, a suitable homogenised model for the limit analysis of masonry walls has been presented in [5], where the units are supposed infinitely resistant and the joints are interfaces of zero thickness with a frictional failure surface. Furthermore, in [6], a brittle damaging model has been developed, characterized by an elementary cell composed by units, mortar and a finite number of fractures on the interfaces.…”

Section: Introductionmentioning

confidence: 99%

Homogenised limit analysis of masonry walls, Part II: Structural examples

Milani

Lourenço

Tralli

2006

Computers & Structures

158

113

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A simple micro-mechanical model for the homogenised limit analysis of in-plane loaded masonry is proposed. Assuming brickwork under plane stress condition and adopting a polynomial expansion for the 2D stress field, a linear optimisation problem is derived on the elementary cell in order to recover the homogenised failure surface of the brickwork. Different models of higher accuracy are obtained by increasing the degree of the polynomial approximation. Several cases of technical interest are treated in detail, varying both the geometrical characteristics of the cell and the mechanical properties of the components. The model is validated through comparisons with experimental data and kinematic approaches; the comparison with experimental data has the aim to reproduce in a qualitative way the shape of the failure surface, since 3D effects and brittle behaviour of bricks can not be taken into consideration with the model proposed.In an accompanying paper, the homogenised failure surfaces here obtained are implemented in a finite element limit analysis code and relevant structural examples are treated both with a lower and an upper bound approach.

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Section: Introductionmentioning

confidence: 99%

Homogenised limit analysis of masonry walls, Part II: Structural examples

Milani

Lourenço

Tralli

2006

Computers & Structures

158

113

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“…In FEM/DEM, the interfaces are made by specific "crack elements", dedicated four nodes cohesive elements which are embedded between the hedges of all adjacent triangular elements pairs since the beginning of simulation [19]. The potential crack path can open everywhere in the mesh, here in order to simulate the behavior of historic masonry panels, in which cracks usually occur mainly in the mortar joints [20,21], two different joints have been used: one inside the blocks and the other between adjacent blocks. The former has a very high cohesion value in order to avoid the breaking of blocks, while the latter has a very low cohesion value, in order to model dry joints.…”

Section: Fem/dem and Dem Model Proceduresmentioning

confidence: 99%

DEM & FEM/DEM MODELS FOR LATERALLY LOADED MASONRY WALLS

Baraldi

Reccia

Cecchi

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Homogenization techniques for older masonry types (e.g. [3][4][5]) are also available in the literature. Experimental data [6,7] is used to calibrate and validate the numerical model.…”

Section: Introductionmentioning

confidence: 99%

Through-bolt push out effects on the behavior of hybrid masonry systems

Nistor

Gao

Stanciulescu

2015

Engineering Structures

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This paper provides specifications necessary for designing hybrid masonry systems that resist through-bolt push out effects. Hybrid masonry is a relatively new structural system that can be used in seismic areas and comprises masonry panels connected to frames through steel plate connectors. However, masonry break-out at the connection between the steel plates and the masonry panel requires further analysis to better understand the load transfer mechanism of the hybrid masonry system. Therefore, we use a computational framework to model the hybrid masonry that uses a typical plasticity model with hardening for the steel components and a nonlocal two-scalar damage model that accounts for tension and compression for the masonry panel. Based on parametric studies conducted using this framework * Corresponding author. Tel.: +1713 348 4704; fax: +1713 348 5268.Email address: ilinca.s@rice.edu (Ilinca Stanciulescu)Preprint submitted to Engineering Structures June 11, 2015we provide recommendations for the through-bolt location and for the reinforcement percentage and location within the masonry panel to achieve best results in the load transfer mechanism of the hybrid masonry system during a seismic event.

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Homogenization technique and damage model for old masonry material

Cited by 200 publications

References 8 publications

Homogenised limit analysis of masonry walls, Part II: Structural examples

Homogenised limit analysis of masonry walls, Part II: Structural examples

DEM & FEM/DEM MODELS FOR LATERALLY LOADED MASONRY WALLS

Through-bolt push out effects on the behavior of hybrid masonry systems

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