A multiobjective optimisation approach for the conceptual design of frame structures

This paper explores the potential for using optimisation methods in the conceptual design of frame structures. The key elements of our approach are a randomised search based optimisation method (to simulate creativity), a generative structural shape grammar (to allow different configurations to be explored), and a multiobjective optimisation approach (to identify competing concepts occupying different parts of the trade-off surface). The results presented for a modified version of a classic structural optimisation problem demonstrate the success of this approach in exploring a multiplicity of different design configurations and presenting the designer with a variety of Pareto-optimal concepts worthy of further consideration.