Applications for curved glass in buildings

Neugebauer, Jürgen

doi:10.3233/fde-150016

Cited by 25 publications

(14 citation statements)

References 2 publications

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“…The loading history curve was shown in Fig 3(a) . Regarding the loading rate, the study [ 2 , 4 ] demonstrated that the loading rate of the cold bending glass panel will not affect the geometric response, so a low uniformly loading rate was used to load the cold bending displacement, and the same as the subsequent uniform load test.…”

Section: Methodsmentioning

confidence: 99%

“…The first approach would produce a rough curved surface by plane splicing, achieving poor outcomes with a large curvature. The second method is one of the most used to manufacture small objects with a large curvature [ 1 ], but it requires a large number of molds to bend glass plates, and the overall complex procedure needs to be carried out at a high temperature, usually above 550°C[ 2 ]. The shortcomings of heat bending often make people unsatisfied.…”

Section: Introductionmentioning

confidence: 99%

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Study on the mechanical response of anticlastic cold bending insulating glass and its coupling effect with uniform load

2021

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Cold bending is a characteristic of significance for the beautiful curved glass curtain walls, because it affects them in terms of energy-efficiency and cost-efficiency. The increasing engineering projects call for more special studies on the mechanical properties of cold-bent glass panels, especially when the walls are built by insulating glass that is currently widely used while its relevant research is very scarce. This paper is devoted to studying the mechanical properties of anticlastic cold-bent insulating glass while taking different factors into consideration, including glass thickness, cold-bent torsion rate and cavity thickness. 9 pieces of insulating glass were manufactured for anticlastic cold-bending test and their coupled effect with identical load is also studied, and numerical finite element analysis sessions were carried out to simulate the experimental results for each one of them. Further, we analyzed the stress distribution performance of the sample pieces under cold bending and a uniform load, followed by discussions about stress transfer controls in glass plates. The results showed that the cold-bent control stress is on the surface with direct loads from cold bending and close to the cold-bent corner on the short edge, and it is transferred from the parts around the corner to the center when the uniform load plays a leading role in generating stress. This transfer could occur under a relatively small load with a small cold-bent torsion rate. A higher cold-bent torsion rate in cold bending contributed mostly to greater center stress in the glass, and as the glass thickness grows, stress and deflection at the plate center would significantly drop. However, the effect of cavity thickness on the anticlastic mechanical response of insulating glass was found to be trivial.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on the mechanical response of anticlastic cold bending insulating glass and its coupling effect with uniform load

2021

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“…The first application example is laser glass bending. In the industrial standard process of glass bending [54], a flat glass specimen is placed in a furnace with furnace temperature T f , and then the heated specimen is bent at a designated edge driven by gravity. As an additional feature, a laser can be added to the industrial standard process in order to specifically heat up the critical region of the flat glass around the bending edge and thus, to speed up the process and achieve smaller bending radii [55,56].…”

Section: Laser Glass Bendingmentioning

confidence: 99%

Compensating data shortages in manufacturing with monotonicity knowledge

Kurnatowski¹,

Schmid²,

Link³

et al. 2020

Preprint

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We present a regression method for enhancing the predictive power of a model by exploiting expert knowledge in the form of shape constraints, or more specifically, monotonicity constraints. Incorporating such information is particularly useful when the available data sets are small or do not cover the entire input space, as is often the case in manufacturing applications. We set up the regression subject to the considered monotonicity constraints as a semi-infinite optimization problem, and we propose an adaptive solution algorithm. The method is conceptually simple, applicable in multiple dimensions and can be extended to more general shape constraints. It is tested and validated on two real-world manufacturing processes, namely laser glass bending and press hardening of sheet metal. It is found that the resulting models both comply well with the expert's monotonicity knowledge and predict the training data accurately. The suggested approach leads to lower root-mean-squared errors than comparative methods from the literature for the sparse data sets considered in this work.

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“…Bild 2-9 gibt eine vergleichende Übersicht von Parametern für die Auswahl gebogenen Glases. Weitere Informationen finden sich beispielsweise bei [2], [20] oder in der BF-Richtlinie [18] sowie als Übersicht in [19]. Einen beispielhaften Entscheidungsbaum für die Wahl des Biegetyps zeigt Bild 2-8.…”

Section: Zusammenfassung Der Parameterunclassified

Entwerfen und Konstruieren mit gekrümmtem Glas

Fildhuth¹,

Oppe²,

Schieber³

2019

ce papers

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Der Wunsch nach kontinuierlich gekrümmten Fassaden und freien Formen in der aktuellen Architektur sowie die stetige Verbesserung der Herstellungsmethoden führen zu einem zunehmenden Einsatz gekrümmter Gläser. Dauerhafte Krümmung wird durch thermisches Biegen erreicht, während elastisches Kaltbiegen zu reversiblen Glaskrümmungen führt, welche entweder durch Befestigung auf einer Unterkonstruktion oder durch Lamination mit schubsteifen Interlayern stabilisiert werden. Bei der Anwendung spielen voneinander abhängige Faktoren wie die geometrische Form und Krümmung, Glasgröße, residuelle Spannungen, Isolierglas, Beschichtungen, Oberflächenqualität und der Interlayer eine entscheidende Rolle. Als Beitrag zu einer Entwurfsbasis werden hier Eigenschaften und Grenzen gekrümmten Architekturglases vergleichend aufgezeigt und anhand von Projektbeispielen belegt. Design and Construction with Curved Glass. Driven by free-form design and improved manufac-turing methods, curved glass is increasingly used in modern architecture. Permanent curvature is obtained by thermal bending, whereas elastic cold bending results in a reversible curved glass shape stabilized by fixing upon a substructure or by lamination with shear-stiff interlayers. However, for the application in building projects mutually depending factors such as the geometrical shape and curvature, glass dimensions, residual stress, applicability for IGUs, coatings, the interlayer or the optical quality have to be respected. The present paper contributes to creating a design basis regarding the use of curved architectural glass by comparing typical properties, assets and limitations of the above-mentioned types and by illustrating their application through project examples.

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Applications for curved glass in buildings

Cited by 25 publications

References 2 publications

Study on the mechanical response of anticlastic cold bending insulating glass and its coupling effect with uniform load

Study on the mechanical response of anticlastic cold bending insulating glass and its coupling effect with uniform load

Compensating data shortages in manufacturing with monotonicity knowledge

Entwerfen und Konstruieren mit gekrümmtem Glas

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