An improvement technique for Bi-directional Evolutionary Structural optimisation (BESO) method

Bi-directional Evolutionary Structural optimisation (BESO) method is now a well-known and popular method in
topology optimisation. A new interpretation of this method is presented in which the method is viewed as a twostep procedure. Based on this interpretation, a simple heuristic improvement technique is introduced to improve
BESO results. The proposed improvement technique is tested and verified through numerical examples and its
performance is compared with the averaging sensitivity stabilisation technique proposed in [1]. It is shown that the
proposed improvement is robuster than the averaging sensitivity technique.