Laminated Glass Cantilevered Plates under Static and Impact Loading

Biolzi, Luigi; Bonati, Antonio; Cattaneo, Sara

doi:10.1155/2018/7874618

Cited by 22 publications

(18 citation statements)

References 16 publications

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“…This is also the case of glass structures under dynamic/impact loads, or complex systems and glass stairs ( [4][5][6][7][8][9][10][11][12][13][14], etc.) where-in addition to conventional safety design requirements ( [1,2] and Section 2)-excessive vibrations may involve unfavorable feelings and require dedicated interventions, at the design stage as well as during the service life.…”

Section: Introductionmentioning

confidence: 99%

Reliability of Field Experiments, Analytical Methods and Pedestrian’s Perception Scales for the Vibration Serviceability Assessment of an In-Service Glass Walkway

Bedon

Fasan

2019

Applied Sciences

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The vibration performance of pedestrian structures attracts the attention of several studies, especially with respect to unfavorable operational conditions or possible damage scenarios. Given a pedestrian system, specific vibration comfort levels must be satisfied in addition to basic safety requirements, depending on the class of use, the structural typology and the materials. To this aim, guideline documents of the literature offer simplified single-degree-of-freedom (SDOF) approaches to estimate the maximum expected vibrations and to verify the required comfort limits. Most of these documents, however, are specifically calibrated for specific scenarios/structural typologies. Dedicated methods of design and analysis, in this regard, may be required for structural glass pedestrian systems, due to their intrinsic features (small thickness-to-size ratios, high flexibility, type and number of supports, live-to-dead load ratios, use of materials that are susceptible to mechanical degradation with time/temperature/humidity, etc.). Careful consideration could be then needed not only at the design stage, but also during the service life of a given glass walkway. In this paper, the dynamic performance of an in-service glass walkway is taken into account and explored via field vibration experiments. A set of walking configurations of technical interest is considered, involving 20 volunteers and several movement features. The vibration comfort of the structure is then assessed based on experimental estimates and existing guideline documents. The intrinsic uncertainties and limits of simplified approaches of literature are discussed, with respect to the performance of the examined glass walkway. In conclusion, the test predictions are also used to derive “perception index” data and scales that could support a reliable vibration comfort assessment of in-service pedestrian glass structures.

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Section: Introductionmentioning

confidence: 99%

Reliability of Field Experiments, Analytical Methods and Pedestrian’s Perception Scales for the Vibration Serviceability Assessment of an In-Service Glass Walkway

Bedon

Fasan

2019

Applied Sciences

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“…The first element

consists of a float glass ply, which presents a low strain elastic brittle behaviour. A second glass ply

, with a higher strain limit compared to

, serves as support after rupture, permitting an overall pseudo-ductile response of the composite glass beam [ 12 ]. The central layer

, or interlayer, is made of polyvinyl butyral (PVB) and acts as bonding material between the two glass plies.…”

Section: Laminated Glass Beam Mechanical Responsementioning

confidence: 99%

“…Very few works address the post-breakage response. Extensive tests have been conducted on laminated glass, both for in-plane loading [ 7 , 8 , 9 , 10 ] and for out-of-plane loading [ 11 , 12 ], showing its pseudo-ductile failure mechanism. Delamination of the interface has been studied in [ 13 ], highlighting the differences between the short and long term response.…”

Section: Introductionmentioning

confidence: 99%

Phase Field Simulation of Laminated Glass Beam

Freddi

Mingazzi

2020

Materials

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The complex failure mechanisms of glass laminates under in-plane loading conditions is modelled within the framework of phase-field strategy. Laminated glass is widely used for structural purposes due to its safe post-glass-breakage response. In fact, the combination of several glass plies bonded together with polymeric interlayers allows overcoming the brittleness of the glass and to reach a pseudo-ductile response. Moreover, the post-breakage behaviour of the laminate is strictly correlated by the mechanical properties of the constituents. Ruptures may appear as cracks within the layers or delamination of the bonding interface. The global response of a glass laminate, validated against experimental results taken from the literature, is carried out by investigating a simplified layup of two glass plies connected by cohesive interfaces through an interlayer. Delamination of the adhesive interface is described, and crack patterns within the materials are fully described. Finally, the proposed approach put the basis for future comparisons with results of experimental campaign and real-life applications.

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“…[4]. Several research studies, especially in the last few years, have been dedicated to the structural performance assessment of even complex glazed assemblies under various boundary/loading conditions, including destructive impact experiments on glass columns [5], pendulum tests on glass balustrades [6,7], and a series of research studies focused on the wind/blast/seismic induced vibration responses of glass facades [8][9][10][11][12][13][14], etc.…”

Section: Introduction and State-of-the-artmentioning

confidence: 99%

Vibration Analysis and Dynamic Characterization of Structural Glass Elements with Different Restraints Based on Operational Modal Analysis

2019

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Given a series of intrinsic features of structural glass systems (i.e., material properties, type of restraints, operational conditions, etc.), special care should be spent at the design stage, to ensure appropriate fail-safe requirements, but also in the service life of these innovative building components and assemblies. In this paper, the dynamic characterization of simple monolithic glass elements is presented, based on non-destructive laboratory experiments and Operational Modal Analysis (OMA) techniques, including Finite Element (FE) numerical simulations, classical analytical models, and video-tracking approaches. It is shown, in particular, how the actual restraint condition (i.e., flexibility of supports, with respect to ideal boundaries) can affect the vibration parameters of a given glass member (frequency and damping capacity). This turns out in possible variations of its overall structural performance, including stress-strain-related effects, hence suggesting the need for even further dedicated studies and methods for the reliable analysis and design of structural glass assemblies and complex systems under dynamic loads.

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Laminated Glass Cantilevered Plates under Static and Impact Loading

Cited by 22 publications

References 16 publications

Reliability of Field Experiments, Analytical Methods and Pedestrian’s Perception Scales for the Vibration Serviceability Assessment of an In-Service Glass Walkway

Reliability of Field Experiments, Analytical Methods and Pedestrian’s Perception Scales for the Vibration Serviceability Assessment of an In-Service Glass Walkway

Phase Field Simulation of Laminated Glass Beam

Vibration Analysis and Dynamic Characterization of Structural Glass Elements with Different Restraints Based on Operational Modal Analysis

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