Cold Bent Glass Sheets in Façade Structures

Transformable Curved Thin Glass Greenhouse

“…15 show the numerically obtained relationship between prescribed out-of-plane displacement and maximum principal stress in glass, for both cold twisting and shape modification phases. The magnified detail highlights the nonlinearity of the relation, similar to that recorded in (Van Herwijnen et al, 2004) for cold bending of glass with standard thickness. The numerical findings confirm that the loading (cold bending) and unloading (i.e., shape modification from h = 500 mm to the flat configuration) path coincide.…”

“…As observed by many authors (see, among the others, (Van Herwijnen et al, 2004;de Wit, 2009;Datsiou, 2017)), at a certain level of the applied actions, or of prescribed corners' displacement, a little-known form of global instability occurs: the HP buckles into an asymmetric configuration where one of the diagonals tends to straighten, while the curvature increases in the direction of the second diagonal. In this buckled configuration, the deformed plate loses its symmetry and the edges bend.…”

Bridging the gap between rectifying developables and tangent developables: a family of developable surfaces associated with a space curve

“…Since any curved developable surface can be formed from a flat region while preserving the distance along any curve between any pair of points, the work required to deform thin sheets of materials as diverse as paper, leather, metal, and glass into developable shapes is much less than that needed to attain other shapes. Developable surfaces have thus been of longstanding relevance in many areas, including the design of ship hulls [2] and automobile parts [3,4], buildings [5,6], especially lightweight structures like facades [7] and pavilions [8], apparel [9] and footwear [10]. Due to the widespread utility of developable surfaces, methods for generating and processing them are now standard features of most computer-aided design platforms.…”