Computational Methods for Laminated Glass

Fröling, Maria; Persson, Kent

doi:10.1061/(asce)em.1943-7889.0000527

Cited by 23 publications

(18 citation statements)

References 25 publications

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“…Starting from the linear relationships between stress and strain, interfacial shear and normal stresses can be expressed as follows: (12) where E a et G a are the elastic moduli of the adhesive.…”

Section: Stress Distribution In the Adhesive Layermentioning

confidence: 99%

“…Otherwise, inserting equations (6) and (7) in the fourth derivative of the interfacial transversal normal stress obtained by equation (12), enables to express the following governing differential equation for the interfacial transversal normal stress:…”

Section: Governing Differential Equations Of Interfacial Stressesmentioning

confidence: 99%

“…Hence, it is important, for a safe and cost-efficient strength design, that the structural behavior in terms of displacements and stress distributions is accurately determined since previous design methods, such as analytical formulas, do not provide sufficient information to determine accurate stress and determine the load-bearing capacity of laminated glass [1,7]. Thus an increasing number of analytical or numerical works deals with this challenge [6][7][8][9][10][11][12]. The work of Fröling and Persson [12] presents one of the most accurate numerical studies and proposes an efficient numerical method using specific modified solid shell element.…”

Section: Introductionmentioning

confidence: 99%

“…Thus an increasing number of analytical or numerical works deals with this challenge [6][7][8][9][10][11][12]. The work of Fröling and Persson [12] presents one of the most accurate numerical studies and proposes an efficient numerical method using specific modified solid shell element. This study presents also a sensitivity analysis on the number of degrees of freedom and thus on the mesh fineness.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the lamination on the redundancy of a horizontally layered glass element and analysis of the debonding of the adhesive interlayer

Krour

Bernard

Benyoucef

et al. 2016

International Journal of Adhesion and Adhesives

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International audienceIt is now recognized that lamination enables to increase the redundancy of glass elements. This paper aims to quantify the possibilities of delamination between panes as well as the increase of redundancy for a horizontally layered glass element thanks to an analytical approach combined with a numerical modeling. From an analytical point of view, new procedures have been defined, taking into account the shear-lag effect as well as the mean curvature of the various adherents. The equilibrium of an infinitesimal element of the laminated structure has enabled to evaluate the interfacial stresses responsible for debonding phenomena. Based on this first approach and on the values of the interfacial stresses, a FE numerical simulation has been calibrated. This calibration is extended in two ways. First, the nonlinear behavior of the material is considered. A smeared crack approach is used to take into account the glass mechanical behavior. Then, a local debonding model involving the use of normal and shear springs is proposed at the interface between two glass panes. The mechanical behaviors of the springs are calibrated by simulating existing tension adhesion tests. Finally, by considering various structural cases, this work concludes that the debonding of the interface is a possibility and discusses its influence on the redundancy of the considered laminated structure

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Section: Stress Distribution In the Adhesive Layermentioning

confidence: 99%

Section: Governing Differential Equations Of Interfacial Stressesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of the lamination on the redundancy of a horizontally layered glass element and analysis of the debonding of the adhesive interlayer

Krour

Bernard

Benyoucef

et al. 2016

International Journal of Adhesion and Adhesives

View full text Add to dashboard Cite

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“…This meshing technique has been demonstrated to be adequate to reproduce the laminated glass behavior with a relatively low computational time [43]. A detail of the mesh is shown in figure 2.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Natural frequencies and damping ratios of multi-layered laminated glass beams using a dynamic effective thickness

Pelayo

Aenlle

2017

Jnl of Sandwich Structures & Materials

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Multi-layered laminated glass panels are those with at least three monolithic glass layers and two viscoelastic interlayers. Multi-layered laminated glass panels are commonly used in floors, roofs and other horizontal glazing accessible to the public where a high level of security is required. Although the glass can be consider a linear-elastic material, the viscoelastic interlayers determine a non-linear behavior of the laminated structure that must be taken into consideration. In this paper, a dynamic effective thickness is proposed to predict the natural frequencies and damping ratios of multi-layered laminated glass beam-like structures with different boundary conditions and at different temperatures.Furthermore, the presented dynamic effective thickness can be also used to any frequency domain calculations such as displacements and stresses.To validate the proposed model, operational modal analysis was carried out on a multilayered laminated glass beam to obtain the experimental natural frequencies and damping ratios at 20, 25, 30 and 35 . Moreover, a finite element model of the beam was also assembly for the sake of comparison. The proposed model predicts the natural frequencies with errors less than 5% whereas the discrepancies in damping ratios are less than 50%. Greek lettersDensity of the polymeric interlayers Density of the glass layers

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Experimental and numerical investigations on glass fragments: shear-frame testing and calibration of Mohr–Coulomb plasticity model

2021

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The numerical treatment of the residual load-bearing behavior of laminated glasses (LG) in the post-fractured state is highly topical. Nevertheless, currently only few numerical approaches for an accurate representation of the experimentally observed behavior are existent. In order to model the characteristics of the load-bearing behavior of glass laminates in the post-fractured state, the behavior of the interlayer, the behavior of the glass fragments as well as the bonding between glass and interlayer need to be characterized correctly. This paper focuses on the modeling of the frictional contacts between the glass fragments itself. In order to allow for the calibration of failure criteria for the fractured glass particles, framed shear tests which are a common experimental technique in geomechanical testing to determine the shear strength of soils, are performed on glass fragments of different thicknesses and levels of thermal pre-stress. The test results are subsequently used to calibrate non-associated Mohr–Coulomb criteria, which are widely applied to the description of failure and frictional sliding of soils, to the experimental data of four distinct kinds of glass fragments. The obtained parameters of the Mohr–Coulomb models are in magnitude similar to the parameters of standard soils such as sand or gravel. The experimental data further show, that the Mohr–Coulomb model in general can be used to approximate the stress failure plane of the glass fragments but lacks for capturing correctly the plastic volumetric strains (dilation) in Finite Element modelling. Numerical investigations by the Finite Element method showed, that it is possible to reproduce experimental data by using Mohr–Coulomb plasticity models and hence the numerical models are validated for further investigations.

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Computational Methods for Laminated Glass

Cited by 23 publications

References 25 publications

Influence of the lamination on the redundancy of a horizontally layered glass element and analysis of the debonding of the adhesive interlayer

Influence of the lamination on the redundancy of a horizontally layered glass element and analysis of the debonding of the adhesive interlayer

Natural frequencies and damping ratios of multi-layered laminated glass beams using a dynamic effective thickness

Experimental and numerical investigations on glass fragments: shear-frame testing and calibration of Mohr–Coulomb plasticity model

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