||Cold bending of thin glassMicro Project HS19

Micro Project – Salome Geiser

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Cold bending of thin glass

Salome Geiser

||Cold bending of thin glassMicro Project HS19

Trends in architecture Lightness Transparency Complex forms

Appropriate properties of glass

Sources: https://inhabitat.com/the-hagues-elegant-new-light-rail-station-masters-curved-glass-and-steel/

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Introduction

||Cold bending of thin glassMicro Project HS19

Hot-bending Complex forms Energy inefficient Lower precision

Cold-bending Curvatures Energy efficient High precision

Sources: http://www.evolo.us/shell-and-shadow-for-nordpark-railway-stations-in-innsbruck-austria-zaha-hadid-architects/https://www.raileurope.ca/fr/place/strasbourg-gare-centrale

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Introduction

||Cold bending of thin glassMicro Project HS19

Two methods: Bending and mechanical fixing Lamination

Elastic and reversible

Permanent bending stresses

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Introduction: Cold bending

||Cold bending of thin glassMicro Project HS19

Usually < 2mm Chemically hardened Alkali-Aluminosilicate glass

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Introduction: What is thin glass?

||Cold bending of thin glassMicro Project HS19

Displays Automotive industry Aerospace industry

Source: www.schott.com

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Applications

||Cold bending of thin glassMicro Project HS19

Construction industry Curved glass planes Adaptive facades

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Applications

||Cold bending of thin glassMicro Project HS19

Construction industry Curved glass planes Adaptive facades Thin glass composites And many others…

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Applications

||Cold bending of thin glassMicro Project HS19

Spring-back effect and creep of laminates Loss of stress up to 12% (Gordon, 2019)

Source: https://www.balustradeglass.co.uk/help/glass-information/

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Design Questions

||Cold bending of thin glassMicro Project HS19

Spring-back effect and creep of laminates Loss of curvature up to 50%

Instabilities for biaxially curved forms

Source: Datsiou, Kyriaki Corinna. (2017). Design and Performance of Cold Bent Glass.

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Design Questions

||Cold bending of thin glassMicro Project HS19

Spring-back effect and creep of laminates Loss of curvature up to 50%

Instabilities for biaxially curved forms

Support Mechanical mounting

Ageing

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Design Questions

||Cold bending of thin glassMicro Project HS19

Promising method to create complex forms More energy efficient than hot bending Saves materials Application in numerous industries Still a lot of design question Limited research done

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Conclusion

||Cold bending of thin glassMicro Project HS19

www.us.schott.com Datsiou, Kyriaki Corinna. (2017). Design and Performance of Cold Bent Glass. Silveira, Rebeiro. (2016). Flexible transparency: A study on thin glass adaptive

façade panels. TUDelft. Neeskens, Tim. (2018). Thin glass composites: based on a structural efficiency

increasing design strategy. TUDelft. Nehring, Gordon. Siebert, Gerald. (2019). Bemessung von ein- und zweiachsig

kaltgebogenen Schalenstrukturen aus Dünnglas.

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Sources