A Multiobjective Optimization Framework for Strength and Stress Concentration in Variable Axial Composite Shells: A metaheuristic approach

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Santana, PB (Author) Other; Gomes, HM (Author) Other; Ferreira, AM (Author) Other; Tita, V (Author) Other

Journal

Title: Latin American Journal of Solids and Structures

Vol. 20

ISSN: 1679-7817

Publisher: Argentinean Association of Computational Mechanics

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00Y-P1J

DOI: 10.1590/1679-78257577

Abstract (EN): A metaheuristic approach for variable axial composites considering multiobjective optimization is investigated. The proposed methodology is based on the combination of three main parts: a methodology for defining the orientation of the fibers in the laminate, a structural analysis program (based on the Finite Element Method) and an optimization algorithm. It is important to highlight that a radial basis function (RBF), which describes a smooth fiber pattern, is generated using control points. The novelties of the present methodology consist of a proposal for a generalized parameterization technique, which allows the investigation of mechanical strength and stress concentration of variable axial composites. Thus, NSGA-II multiobjective genetic algorithm is used as optimization tool to define the fiber orientations. Besides, ax metaheuristic approach is used in situations when it is desirable to simultaneously minimize the stress concentration factor (K ¿¿¿¿¿¿¿¿¿¿¿¿) and a failure criterion index (FI or 0). Two case studies are investigated: a double notched plate and a tube with a transverse hole.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16