| Title |
Truss Size Optimization with Frequency Constraints using ACO Algorithm |
| Authors |
Lee, Sang-Jin ; Bae, Jungeun |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.10.135 |
| Keywords |
Ant Colony Optimization; Size Optimization; Truss; Penalty Function; Frequency Constraint; Weight Minimization |
| Abstract |
Ant colony optimization(ACO) technique is utilized in truss size optimization with frequency constraints. Total weight of truss to be
minimized is considered as the objective function and multiple natural frequencies are adopted as constraints. The modified traveling salesman
problem(TSP) is adopted and total length of the TSP tour is interpreted as the weight of the structure. The present ACO-based design
optimization procedure uses discrete design variables and the penalty function is introduced to enforce design constraints during optimization
process. Three numerical examples are carried out to verify the capability of ACO in truss optimization with frequency constraints. From
numerical results, the present ACO is a very effective way of finding optimum design of truss structures in free vibration. Finally, we
provide the present numerical results as future reference solutions. |