Fig. 1 Self-shaping wood bilayer application at large scale.

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Presentation transcript:

Fig. 1 Self-shaping wood bilayer application at large scale. Self-shaping wood bilayer application at large scale. (A to D) Analysis and design process at laboratory scale. (E to G) Industrial scale, same thickness but increased length and width of bilayers toward plate geometries. (A) Parametric digital model and FE analysis for shape prediction of arbitrary configuration. (B) Example bilayer strip configuration (here, European beech wood) with passive and active layer components with wood anatomical directions radial (R), tangential (T), and longitudinal (L). (C) Laminated wooden bilayer strip in initial, wet, and flat shape. (D) Curved self-shaped bilayer after drying. (E) Industrial-scale manufacturing (here, Norway spruce wood) in plate and shell configurations. Plates can be air-dried or kiln-dried to achieve self-shaping. Multiple shaped bilayer plates can be stack-laminated and additionally laminated with a thin cold bent locking layer (with same thickness as a passive layer) to form shape-stable curved CLT. (F) Application example as barrel vaulted CLT roof structure with wood fiber direction of thick lamellas (active layers) in load-bearing direction. (G) Application example as curved CLT wall with wood fiber direction of thick lamellas (active layers) in vertical direction. Philippe Grönquist et al. Sci Adv 2019;5:eaax1311 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).