Estimating laminated glass beam strength via stochastic Rigid Body-Spring Model

Biolzi, Luigi; Casolo, Siro; Diana, Vito; Sanjust, Carlo Alberto

doi:10.1016/j.compstruct.2017.03.062

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…With reference to LG, the PFLS is further split in two categories: PFLS I, when at least one ply remains intact and PFLS II, when all plies are fractured. While well-established models are now available for the analysis of intact LG panes at the Ultimate Limit State (Foraboschi, 2014;Belis et al, 2013;Biolzi et al, 2017;Galuppi and Royer-Carfagni, 2016), their counterpart for assessing the post fracture behaviour is missing, although some attempts have been made (Biolzi et al, 2019;Biolzi et al, 2020;Biolzi and Simoncelli, 2022;Bedon and Fasan, 2024). According to CEN/TS 19100, PFLS of glass components can be assessed by experimental testing or alternatively by a theoretical assessment.…”

Section: Introductionmentioning

confidence: 99%

Phase Field Fracture Model for Assessing the Load Bearing Capacity of Fractured Glass

Corrado,

Chao Correas,

Ventura

2024

CGC

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The use of glass as structural material has highlighted the need for more reliable numerical approaches to analyze its mechanical behavior, especially in the accidental eventuality of fracture. Modelling the behavior of fractured laminated glass, in fact, is fundamental to assess the Post-Fracture load-bearing capacity. However, this is a highly challenging task because of the many interplaying factors, such as the viscoelastic and thermal-dependent behavior of the interlayer, the presence of a highly complex and variable crack pattern and the interaction among fragments. The objective of the present work is the development and testing of a robust numerical model that can naturally introduce the generated crack pattern into virtual specimens and manage the interaction among many fragments. The phase field fracture model is herein explored, by assigning the damage variable to fit the pre-existing crack pattern. Then, the specimen is loaded letting the phase field managing the fragments interaction. The dependence of the stress tensor with the damage variable is herein defined through the Cleavage-Deviatoric model, since it prevents fully damaged regions from transmitting tensile and shear stresses yet keeping their ability to bear compressive forces. Indeed, this model can asymptotically reproduce unilateral and frictionless contact conditions between the existing crack lips. Preliminary case studies are discussed to check the potentiality of the proposed approach.

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Section: Introductionmentioning

confidence: 99%

Phase Field Fracture Model for Assessing the Load Bearing Capacity of Fractured Glass

Corrado,

Chao Correas,

Ventura

2024

CGC

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“…The dynamic response of a typical medieval fortification to an artillery attack was investigated through some explicit dynamic analyses. These were executed on a 3D finite element model (FEM) and a simplified innovative rigid body-spring model with diagonal springs (RBSM) developed from the RBSM proposed by Casolo [19][20][21][22], which has been widely adopted for the seismic analyses of masonry structures. Since the RBSM is a plane model, in the hypothesis of a gun battery attack, a plane strain model of the cross-section of the wall was considered for the analyses, conveniently defining the model thickness.…”

Section: Introductionmentioning

confidence: 99%

Explicit Dynamic Analysis by a Rigid Body-Spring Model of Impact Loads of Artillery on Middle Age Fortifications

Tateo

Casolo

2021

Buildings

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The development of artillery in Europe at the end of the Middle Ages brought a necessary change in military architecture. This change was a radical rethinking of the entire geometry and architectural design of city walls which required an increase in thickness to resist repeated artillery strikes. The damage due to the impact loads on Middle Age fortification walls is analyzed herein with explicit dynamic analyses. This study was developed both with finite element models and an innovative rigid body-spring model with diagonal springs (RBSM), showing the different peculiarities of these two different approaches and how their results can be integrated. The numerical models clearly showed that the presence of an inner core of softer material tends to modify the impact effects by reducing the degree of damage at the expense of an extension of the damaged area.

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“…In particular, heat-strengthened and tempered glasses show enhanced tensile strength due to surface-compressive prestress [3]. e failure of currently produced glass is controlled by the presence of surface defects caused by industrial production processes and, as a consequence, the strength of such glass is correlated with a statistical distribution of those defects [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Laminated Glass Cantilevered Plates under Static and Impact Loading

Biolzi

Bonati

Cattaneo

2018

Advances in Civil Engineering

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The structural performance of cantilevered laminated glass plates for different glass thicknesses and interlayers is considered in this paper. Heat-strengthened and tempered glass plies and two different interlayer films were utilized. The response of laminated glass specimens is then evaluated under low-velocity hard and semirigid impacts. Experimental findings were simulated and discussed by means of finite element analyses. In particular, this discussion includes the evaluation of the influence that the fixed edge clamping technique (number of clamps, their size, and their stiffness) has on the stress distribution in the specimens.

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Estimating laminated glass beam strength via stochastic Rigid Body-Spring Model

Cited by 10 publications

References 26 publications

Phase Field Fracture Model for Assessing the Load Bearing Capacity of Fractured Glass

Phase Field Fracture Model for Assessing the Load Bearing Capacity of Fractured Glass

Explicit Dynamic Analysis by a Rigid Body-Spring Model of Impact Loads of Artillery on Middle Age Fortifications

Laminated Glass Cantilevered Plates under Static and Impact Loading

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