1,721,328 research outputs found
Editorial Challenging Glass Conference 8
No full textWe gradually emerge from two difficult years of the covid-19 pandemic raging through the world in waves of constantly changing intensities. The associated uncertainties really put the ‘challenging’ into Challenging Glass this time. Still, some of our peers are not able to join us in Ghent, and they will be sorely missed. Nevertheless, we are happy to be able to return this year to the ‘real thing’: a live event which allows the international glass community to finally meet again in person. An excellent opportunity, especially within the UN-declared International Year of Glass 2022. We look forward to reconnect with international colleagues and old friends, but we also want to extend a particularly warm welcome to new and young peers who perhaps have not yet had many opportunities to build their professional network.Applied Mechanic
Analytical, numerical and experimental prediction of the lateral-torsional buckling behaviour of PVB and SG laminated glass beams
No full textDue to the large increase of structural glass applications, the lateral-torsional buckling behaviour of glass beams represents a topic of great interest for researchers, as it is often crucial for the design of such members. Although several analytical models and design ap-proaches exist in literature, various aspects complicate their real out-of-plane response, especially in presence of 2 (or more) layer laminated glass sections. In the paper, analytical, numerical and experimental predictions for the elastic critical loads of several PVB and SG laminated glass beams subjected to well-defined temperature and load-time conditions are compared. At the same time, the accuracy of existing analytical formulations for the prediction of their typical load-lateral displacement path is checked with large series of test predictions
Elastic lateral-torsional buckling of glass beams with continuous lateral restraints
No full textLateral-torsional buckling is a typical buckling mode for slender members loaded in bending, which is characterized by the lateral and torsional displacement of the cross-section along the complete member length. Structural glass members are often connected to the encompassing structure by means of a silicone sealant joint along the member length, which acts as a partially rigid lateral connector, restraining the movement of this side of the member. While this will increase the lateral-torsional buckling resistance of these members, this is currently not considered during the design. In this paper the behaviour of glass beams with a continuously restrained top edge, loaded by a line load or central point load along this edge, will be investigated by executing a numerical parametric study. In this study, the restraint provided by the silicone sealant joint is modelled by lateral springs along the edge of the beam. The influence of the spring stiffness on the critical load and corresponding eigenmode shape will be determined in an eigenvalue analysis, considering both monolithic and laminated glass beams. The results of this study will give some first insights in the influence of lateral restraints on the lateral-torsional buckling behaviour
Thermal breakage of glass
No full textDuring their lifetime, glass panels are repetitively exposed to thermal stresses. These thermal stresses result from temperature differences within the panel, which most notably cause the edges of the panels to be stressed in tension. When these thermal stresses exceed the glass edge strength, failure will occur. In this study, the thermal stresses are calculated by finite element software on the basis of real climate data during a twenty year period. By means of these finite element analyses it is investigated whether or not the stresses in the glass exceed the edge strength of the glass, thereby causing its failure. For this purpose, the yearly maximum stresses are derived from the model. In addition, the entire thermal stress history has been taken into account to incorporate the effects of stress corrosion on the edge strength of the glass. From the study it is observed that the latter criterion may be more stringent than the former
Behaviour of monolithic and layered glass elements subjected to elevated temperatures : state of the art
Full text linkGlass has become an indispensable construction material. However, in extreme events such as fire, the behaviour of glass elements is still relatively unknown. The susceptibility of glass to thermal shock and its changeable material properties when subjected to high temperatures make predicting the behaviour of glass elements during fire complex.
Practical applications of fire-resistant glazing, however, already exist as infill panels and frameless glass walls/doors, and are commonly used. They are highly effective to maintain compartmentation, providing temporary protection of the unexposed side against the passage of flames and smoke and, depending on the classification, they also provide thermal insulation. This paper gives a state of the art overview of experimental research performed on glazing subjected to fire loading. Studies on temperature-dependent properties, monolithic glazing and layered glass products exposed to heating are summarised. The current shortcomings to determine the fire performance of glazing are identified and promising numerical software developments are summarised
Considerations for the integration of glass in superyacht structures
No full textIn recent years, it has become popular for superyacht designs to incorporate large uninterrupted glazed areas in the superstructure. Larger windows increase the amount of natural light that enters the yacht and add to the yacht’s aesthetic appeal and exclusivity. Cruise vessels and other types of passenger ships have seen similar trends. However, window panes are currently isolated from the structural loads within a vessel and their dimensions are restricted by the presence of a frame as a conventional load-bearing structural component. The use of load-bearing glass components presents a solution to this problem as it can also add to the strength of a ship’s structure, thereby reducing the extent of conventional structural materials such as steel or aluminium profiles. Major challenges exist for the use of glass as a load bearing component in a ships’ structure. Even though a solid scientific background has been established for the structural use of glass in structures on land, a lack in knowledge exists of how the challenges in the marine environment can be addressed. This paper gives an overview of the requirements of a ship structure, and more specifically yacht structures, and describes the challenges associated with using glass as a fully integrated structural component. Further implications for the integration of structural glass in a superyacht structure are also discussed and suggestions for a possible design approach is presented.</jats:p
Editorial
Full text linkThe 7th edition of Challenging Glass is unlike any of the previous events in the 12-year history of the conference.
Due to the ongoing corona pandemic, the on-location event has been replaced by an online webinar, featuring
a keynote by Chikara Inamura and a small selection of short paper presentations. We are proud to, nevertheless, be able to present to you these Challenging Glass Conference 7 Proceedings, which are published Open Access in collaboration with TU Delft Open. The proceedings contain more than 50 papers, by glass experts from around the world, while another 20 papers are published in collaboration with the Springer journal Glass Structures & Engineering.
We appreciate the efforts by all authors in these extraordinary times immensely.
Organising this webinar and editing the conference proceedings has once again been an enjoyable experience, albeit different from previous ones. We would like to acknowledge all authors for their contributions, all scientific committee
members for their valuable reviews, our esteemed keynote speaker for his inspiring presentation and of course all
webinar participants for their interest in this event.
We are grateful to our Platinum Sponsors Saint-Gobain and Eastman, as well as our Gold and Silver Sponsors for
making this event possible. In addition, we would like to thank our hosting institution, Ghent University, particularly
Shahryar Nategh for his support in compiling the conference proceedings.
We wish you an enjoyable webinar and we trust you will encounter inspiring publications in these proceedings
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