Application of Structural Topology Optimization to Perforated Steel Beams

This paper focuses on the application of structural topology optimisation technique to design steel perforated I-sections as a first attempt to replace the traditional cellular beams. An optimum web opening configuration is suggested based on the results of parametric studies. A FE analysis is further employed to determine the performance of the optimised beam in comparison to the conventional widely used cellular type beam. It is found that the optimised beam overperforms in terms of load carrying capacities, deformations and stress intensities. Barriers to the implementation of the topology optimisation technique to the routine design of beam web are highlighted.