Dr Bernardino D'Amico B.D'Amico@napier.ac.uk
Associate Professor
Optimization of cross-section of actively bent grid shells with strength and geometric compatibility constraints
D�Amico, B.; Kermani, A.; Zhang, H.; Shepherd, P.; Williams, C.J.K.
Authors
A. Kermani
Prof Johnson Zhang j.zhang@napier.ac.uk
Professor
P. Shepherd
C.J.K. Williams
Abstract
The use of bending as self forming process allows the realization of shape-resistant systems, such as grid shell structures. Here, a numerical method for optimisation of the cross-section of actively bent structures is introduced. For a given load distribution, the optimisation objective consists of normalizing the bending stresses to a given value on the entire structure. In addition, strength and geometric compatibility constraints are taken into account. The method is demonstrated by numerical examples. Further, in order to handle the large displacements involved, a co-rotational Finite Element formulation is adopted and modifed to take into account the changes in stiffness that occur in the forming process of active bending systems. The modified co-rotational formulation is solved for static equilibrium using a Dynamic Relaxation scheme, and is tested against the analytical solutions of some preliminary test cases, as well as experimental results, and shown to be `accurate'.
Citation
D’Amico, B., Kermani, A., Zhang, H., Shepherd, P., & Williams, C. (2015). Optimization of cross-section of actively bent grid shells with strength and geometric compatibility constraints. Computers and Structures, 154, 163-176. https://doi.org/10.1016/j.compstruc.2015.04.006
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 6, 2015 |
Online Publication Date | Apr 21, 2015 |
Publication Date | Jul 1, 2015 |
Deposit Date | Mar 13, 2015 |
Publicly Available Date | Mar 29, 2024 |
Journal | Computers and Structures |
Print ISSN | 0045-7949 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 154 |
Pages | 163-176 |
DOI | https://doi.org/10.1016/j.compstruc.2015.04.006 |
Keywords | Active Bending; Grid Shell; Structural Optimisation; Co-rotational Formulation; Dynamic Relaxation; Timber Structures; |
Public URL | http://researchrepository.napier.ac.uk/id/eprint/7674 |
Publisher URL | http://dx.doi.org/10.1016/j.compstruc.2015.04.006 |
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Optimisation of cross-section of actively bent grid shells with strength and geometric compatibility constraints.
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Publisher Licence URL
http://creativecommons.org/licenses/by-nc/4.0/
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