A mixed-integer linear programming approach for global discrete size optimization of frame structures
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Yksityiskohdat
| Alkuperäiskieli | Englanti |
|---|---|
| Otsikko | ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering |
| Alaotsikko | Crete; Greece; 5 June 2016 through 10 June 2016 |
| Kustantaja | National Technical University of Athens |
| Sivut | 3395-3408 |
| Sivumäärä | 14 |
| Vuosikerta | 2 |
| ISBN (elektroninen) | 9786188284401 |
| Tila | Julkaistu - 2016 |
| OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisussa |
| Tapahtuma | EUROPEAN CONGRESS ON COMPUTATIONAL METHODS IN APPLIED SCIENCES AND ENGINEERING - Kesto: 1 tammikuuta 1900 → … |
Conference
| Conference | EUROPEAN CONGRESS ON COMPUTATIONAL METHODS IN APPLIED SCIENCES AND ENGINEERING |
|---|---|
| Ajanjakso | 1/01/00 → … |
Tiivistelmä
This paper proposes a method to solve discrete size optimization problems of frame structures to global optimality. Global optimality is guaranteed by reformulating the optimization problem as a mixed-integer linear program (MILP) and solving it with the branch-and-bound method. The presented mixed variable formulation extends the existing mixed variable formulation for size and topology optimization of truss structures. The MILP is obtained by adopting the simultaneous analysis and design approach. The variables consist of binary decision variables to select a profile section from the catalog, and state variables representing the member end forces. The equilibrium equations and member stiffness relations are included as constraints. The displacement and stress constraints are formulated such that for each member limit values are imposed at predefined locations along the member. The proposed method is applied to a three-bay three-story frame.