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Project

Multiscale approach applied to the optimal design of complex constructions in modern architecture.

In modern architecture, there is a tendency towards wide-span roofs, often
conceived as shell structures or space trusses. Since the geometry plays a key
role in the structural behaviour of such structures, this entails an increasing
attention for the optimal design of shell structures.
Due to its generality and flexibility, structural optimization is a very
promising design tool. In this project, a methodology is presented where
optimization is applied throughout the design process to obtain an optimal
final design.
In the conceptual design stage, an initial design concept for the shape of the
structure is usually available. However, no details about the structure are
available. As a consequence, a simplified analysis model with only a small number of relevant load cases can be sufficient. In general, the global optimum is targeted, corresponding to the least material use. Alternatively, thedesign
space can be explored to see the variety of good or near-optimal solutions in
the design space. The most interesting result from an aesthetical point of view
will not necessarily be the global optimal design.
In later design stages, the overall geometry is fixed and large design changes
have to be avoided. Consequently, local optimization algorithms maybe preferred.
More details about the structure are known. Therefore, it is possible to
implement the design criteria more strictly. In this stage, it can be necessary
to account for uncertainties, such as initial geometrical imperfections of a
shell structure. An optimization based on this detailed model with a limited
designspace can show the most efficient changes for reduction of the material
volume.
Date:1 Oct 2008 →  30 Sep 2012
Keywords:Optimalization, Complex constructions, Modern architecture
Disciplines:Construction engineering, Earthquake engineering, Geotechnical and environmental engineering, Water engineering, Wind engineering
Project type:PhD project