{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Gronquist P"],"funding":["Deutsche Forschungsgemeinschaft","Innosuisse - Schweizerische Agentur für Innovationsförderung","Deutsche Bundesstiftung Umwelt"],"pagination":["192210"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC7428239"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["7(7)"],"pubmed_abstract":["Bi-layered composites capable of self-shaping are of increasing relevance to science and engineering. They can be made out of anisotropic materials that are responsive to changes in a state variable, e.g. wood, which swells and shrinks by changes in moisture. When extensive bending is desired, such bilayers are usually designed as cross-ply structures. However, the nature of cross-ply laminates tends to prevent changes of the Gaussian curvature so that a plate-like geometry of the composite will be partly restricted from shaping. Therefore, an effective approach for maximizing bending is to keep the composite in a narrow strip configuration so that Gaussian curvature can remain constant during shaping. This represents a fundamental limitation for many applications where self-shaped double-curved structures could be beneficial, e.g. in timber architecture. In this study, we propose to achieve double-curvature by gridshell configurations of narrow self-shaping wood bilayer strips. Using numerical mechanical simulations, we investigate a parametric phase-space of shaping. Our results show that double curvature can be achieved and that the change in Gaussian curvature is dependent on the system's geometry. Furthermore, we discuss a novel architectural application potential in the form of self-erecting timber gridshells."],"journal":["Royal Society open science"],"pubmed_title":["Computational analysis of hygromorphic self-shaping wood gridshell structures."],"pmcid":["PMC7428239"],"funding_grant_id":["34714/01","25114.2","EXC 2120/1 –390831618"],"pubmed_authors":["Menges A","Wood D","Gronquist P","Panchadcharam P","Ruggeberg M","Wittel FK"],"additional_accession":[]},"is_claimable":false,"name":"Computational analysis of hygromorphic self-shaping wood gridshell structures.","description":"Bi-layered composites capable of self-shaping are of increasing relevance to science and engineering. They can be made out of anisotropic materials that are responsive to changes in a state variable, e.g. wood, which swells and shrinks by changes in moisture. When extensive bending is desired, such bilayers are usually designed as cross-ply structures. However, the nature of cross-ply laminates tends to prevent changes of the Gaussian curvature so that a plate-like geometry of the composite will be partly restricted from shaping. Therefore, an effective approach for maximizing bending is to keep the composite in a narrow strip configuration so that Gaussian curvature can remain constant during shaping. This represents a fundamental limitation for many applications where self-shaped double-curved structures could be beneficial, e.g. in timber architecture. In this study, we propose to achieve double-curvature by gridshell configurations of narrow self-shaping wood bilayer strips. Using numerical mechanical simulations, we investigate a parametric phase-space of shaping. Our results show that double curvature can be achieved and that the change in Gaussian curvature is dependent on the system's geometry. Furthermore, we discuss a novel architectural application potential in the form of self-erecting timber gridshells.","dates":{"release":"2020-01-01T00:00:00Z","publication":"2020 Jul","modification":"2025-04-18T14:40:47.971Z","creation":"2020-09-04T07:06:59Z"},"accession":"S-EPMC7428239","cross_references":{"pubmed":["32874613"],"doi":["10.1098/rsos.192210"]}}