Dr Bernardino D'Amico B.D'Amico@napier.ac.uk
Associate Professor
A form finding method for post formed timber grid shell structures.
D'Amico, Bernardino; Kermani, Abdy; Zhang, Hexin
Authors
Abdy Kermani
Prof Johnson Zhang j.zhang@napier.ac.uk
Professor
Abstract
Timber grid shells provide efficient ways of covering large openings with relatively small amount of materials. With three-dimensional CAD software, it is now possible to model a free-form surface and discretize it in smaller straight elements, thus postponing the design of the node-connections geometry to the manufacturing process (i.e. by Computer-Aided-Manufacturing). A "low-tech" method for building free-form timber grid shell structures with standardized connections is that of assembling an initially flat grid of continuous rods and then, post-forming (bending) it in a double curved shape. Accordingly, the latter method doesn't require high-tech manufacturing processes. However, being the final shape influenced by equilibrium of the internal forces, a form-finding procedure is required. A novel "facilitating" numerical framework is introduced in this paper: For a given continuous reference shape, a geometrically similar discrete model is found by implementation of the Dynamic Relaxation method. Numerical methods to the finding of grid cutting pattern, as well as, a Newton-Raphson method to assess the allowable timber cross-section, are illustrated.
Citation
D'Amico, B., Kermani, A., & Zhang, H. (2014). A form finding method for post formed timber grid shell structures. . https://doi.org/10.13140/2.1.3949.8888
Conference Name | World Conference Timber Engineering |
---|---|
Start Date | Jul 10, 2014 |
End Date | Aug 14, 2014 |
Publication Date | 2014 |
Deposit Date | Jan 20, 2015 |
Publicly Available Date | Jan 20, 2015 |
Peer Reviewed | Peer Reviewed |
DOI | https://doi.org/10.13140/2.1.3949.8888 |
Keywords | Free-form structures; grid shell; solid wood; form-finding; parametric design; dynamic relaxation; Newton-Raphson; |
Public URL | http://researchrepository.napier.ac.uk/id/eprint/7496 |
Publisher URL | http://dx.doi.org/10.13140/2.1.3949.8888 |
Files
WCTE_2014_FULL_paper_A_form-finding_tool_for_post-formed_timber_gridshells.pdf
(610 Kb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by-nc/4.0/
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