Optimizacija listnate tekaške proteze z vraninim iskalnim algoritmom in podporo umetne nevronske mreže
| Autor: | Javier Molina Salazar, Antonio Gómez Roa, Jose Omar Davalos Ramirez, Juan Antonio Ruiz Ochoa, Rosel Solís Manuel Javier |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Blade (geometry) finite element method crow search algorithm Crow search algorithm Displacement (vector) chemistry.chemical_compound vranin iskalni algoritem tekaške listnate proteze Tsai-Wu criterion udc:615.477.2:519.6 Sensitivity (control systems) umetne nevronske mreže Artificial neural network business.industry Acrylonitrile butadiene styrene Orientation (computer vision) Mechanical Engineering running blade prosthetics Structural engineering Finite element method chemistry Mechanics of Materials optimizacija business optimization artificial neural networks metoda končnih elementov kriterij Tsai-Wu |
| Zdroj: | Strojniški vestnik, vol. 67, no. 3, pp. 88-100, 2021. |
| ISSN: | 0039-2480 |
| Popis: | A crow search algorithm (CSA) was applied to perform the optimization of a running blade prosthetics (RBP) made of composite materials like carbon fibre layers and cores of acrylonitrile butadiene styrene (ABS). Optimization aims to increase the RBP displacement limited by the Tsai-Wu failure criterion. Both displacement and the Tsai-Wu criterion are predicted using artificial neural networks (ANN) trained with a database constructed from finite element method (FEM) simulations. Three different cases are optimized varying the carbon fibre layers orientations: –45°/45°, 0°/90°, and a case with the two-fibre layer orientations intercalated. Five geometric parameters and a number of carbon fibre layers are selected as design parameters. A sensitivity analysis is performed using the Garzon equation. The best balance between displacement and failure criterion was found with fibre layers oriented at 0°/90°. The optimal candidate with –45°/45° orientation presents higher displacement; however, the Tsai-Wu criterion was less than 0.5 and not suitable for RBP design. The case with intercalated fibres presented a minimal displacement being the stiffer RBP design. The damage concentrates mostly in the zone that contacts the ground. The sensitivity study found that the number of layers and width were the most important design parameters. |
| Databáze: | OpenAIRE |
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