Modeling and parameter importance investigation for simulating in-plane and out-of-plane behaviors of un-reinforced masonry walls

Zeng, Bowen; Li, Yong; Noguez, Carlos Cruz

doi:10.1016/j.engstruct.2021.113233

Cited by 24 publications

(13 citation statements)

References 38 publications

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“…Therefore, the stress return mapping procedure of multi-surface plasticity models is more challenging than that of single surface plasticity model because the difference of region (B 1 , C 1 , and A) cannot be distinguished by checking the yield conditions F i > 0 only, that is, Equation (17). Simo and Hughes 37 recommended a generic solution that needs checking of yield conditions F i > 0 as well as plastic multipliers (d𝜆 i > 0), which provides a more precise set of active surfaces that can be represented as:…”

Section: Determination Of the Correct Active Surfacementioning

confidence: 99%

“…Existing literature shows that damage mechanics and plasticity theory are commonly used for interface models. The use of damage mechanics-based interface models become popular in simulating masonry structures, 16,17 and this is likely due to the availability of such interface models in commercially available finite element (FE) programs such as ABAQUS. 18 However, these interface models 18 do not have the option for frictional resistance which is always found in shear/mode II failure of masonry.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the determination of mixed-mode parameters under complex loading scenarios is problematic due to the lack of experimental results. For mix-mode failure simulation, the Benzeggagh-Kenane fracture criterion 19 along with its default values are commonly used, 16,17 but these values are calibrated from testing of polymer based composite materials. To avoid such issues, Alfano and Sacco 20 developed an interface model incorporating the frictional component in their formulation.…”

Section: Introductionmentioning

confidence: 99%

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A robust computational strategy for failure prediction of masonry structures using an improved multi‐surface damage‐plastic based interface model

Nie

Sheikh

Visintin

et al. 2023

Numerical Meth Engineering

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In this study, a new traction‐separation based constitutive model for use in finite element simulation of masonry joints under complex loading conditions is developed for cohesive elements. The proposed model is formulated using damage parameters and plastic deformation with mutual couplings, and can accurately simulate the complex nonlinear behaviors of masonry joints considering hardening or softening of strength and stiffness degradation. To enhance the numerical stability of the model, plasticity and damage are separated algorithmically and implemented in two phases. In the first phase, the plastic deformations are treated using a multi‐surface plasticity model composed of a smooth hyperbolic yield surface for tension‐shear mixed‐mode failure and an elliptical cap primarily for the compressive failure. This is implemented in effective stress space and helps restrict the evolution of yield surfaces with no softening, significantly enhancing the efficiency of stress return mapping by the closed point projection method. In addition, an adaptive sub‐stepping scheme is adopted to further improve the robustness of the numerical implementation. In the second phase, nominal stresses are computed from the effective stresses using damage parameters. The evolution of these damage parameters is defined in terms of plastic work which is defined by a polynomial form, and is recommended in this study for a better calibration capability. Improvements are made in the formulation of compressive cap including incorporation of hardening of strength and stiffness degradations as these are ignored in existing interface models. This approach helped improve simulation of masonry under cyclic loads with tension‐compression transitions. For the structural level applications, the interface model is implemented within a finite element program, which is utilized to simulate failure of a number of masonry specimens under in‐plane/out‐of‐plane monotonic/cyclic loading. The simulated results are rigorously validated with existing experimental data that shows a good potential in modeling masonry structures.

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Section: Determination Of the Correct Active Surfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A robust computational strategy for failure prediction of masonry structures using an improved multi‐surface damage‐plastic based interface model

Nie

Sheikh

Visintin

et al. 2023

Numerical Meth Engineering

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“…The characterisation of the masonry's softening behaviour in tension is of importance for the assessment of existing masonry structures, as shown for example in [13][14][15][16]. However, direct tensile tests are challenging and often are not commonly available in laboratory [32].…”

Section: Influence Of the Specimen's Typementioning

confidence: 99%

“…Its determination is required to describe the quasi-brittle response of masonry or predict masonry's cracking and failure process through nonlinear analysis. In this context, a small variation of the tensile bond fracture energy may lead to a variation in the estimation of, e.g., the out-ofplane force capacity [13,14] and the in-plane capacity in terms of ductility and base shear force [15] of masonry walls, and the crack width and damage level of masonry buildings [16]. However, this property is never tested in-situ when performing structural assessments.…”

Section: Introductionmentioning

confidence: 99%

Experimental characterisation of flexural bond behaviour in brick masonry

Gaggero

Esposito

2023

Mater Struct

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The brick-to-mortar bond often represents the weakest link leading to cracking and failure of masonry structures. For this reason, the in-situ characterization of masonry’s flexural bond behaviour (here defined as flexural bond strength and flexural bond fracture energy), is essential for the assessment of existing buildings. Among masonry bond properties, the flexural bond strength is commonly determined on-site, given the minimal invasiveness of the so-called bond wrench test. However, often the reliability of the results is questioned inputting their large variability to the operator. The present study discharges this assumption by comparing the accuracy of various testing set-ups (manually-operated vs computer-controlled set-ups). Additionally, the influence of the specimen’s type (with/without head joints and couplets vs wallet) on the flexural bond strength assessment is studied providing preliminary correlation factors that can be of help for the in-situ measurement on single-wythe masonry. In addition, to obtain a complete description of the bond behaviour, a new test set-up able to determine the post-peak response is presented. Considerations regarding the dissipated bond fracture energy and its relation to the tensile fracture energy are provided with the support of literature data.

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A block-based numerical strategy for modeling the dynamic out-of-plane behavior of unreinforced brick masonry walls

Ghezelbash,

D’Altri,

Sharma

et al. 2024

Meccanica

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In this paper, a numerical procedure is proposed to simulate the dynamic out-of-plane response of unreinforced masonry (URM) walls. A state-of-the-art damaging block-based model, originally developed for quasi-static simulations, is extended for the first time in a dynamic regime. The blocks are represented using solid 3D finite elements governed by a plastic-damage constitutive law for both tension and compression. A cohesive-frictional contact-based formulation is used to account for interactions between the blocks. A simplified mechanical characterization is formulated to improve efficiency in wall-level analyses. Dynamic simulation is performed using a generalized HHT-$$\alpha$$ α direct integration implicit solver and by implementing Rayleigh damping in the bulk. Such consideration allows the use of both mass and stiffness proportional terms of the Rayleigh damping without compromising efficiency. The strategy is applied to simulate incremental dynamic experiments performed on full-scale walls, showing good agreement between numerical and experimental results. The calibrated numerical model is then optimized to reduce computational effort while maintaining accuracy. The optimized model is used to investigate the effect of relative support motion on the one-way bending out-of-plane seismic response of URM walls, demonstrating the potential of the modeling strategy to explore the effect of boundary conditions that occur in real buildings but are often overlooked in laboratory experiments. This investigation also explores the adequacy of simplifications in capturing the effect of relative support motion, which can be adopted for simple modeling strategies commonly used in standard engineering practice.

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Modeling and parameter importance investigation for simulating in-plane and out-of-plane behaviors of un-reinforced masonry walls

Cited by 24 publications

References 38 publications

A robust computational strategy for failure prediction of masonry structures using an improved multi‐surface damage‐plastic based interface model

A robust computational strategy for failure prediction of masonry structures using an improved multi‐surface damage‐plastic based interface model

Experimental characterisation of flexural bond behaviour in brick masonry

A block-based numerical strategy for modeling the dynamic out-of-plane behavior of unreinforced brick masonry walls

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