Balogh, GáborRutunga, Erasmus Gozibert2026-02-022026-02-022025-11-19https://hdl.handle.net/2437/403942Closed cell aluminium foams have been widely used in a range of applications including crash absorptions, impact resistance and in structural applications which involve lightweight materials. However, the fatigue life and behaviour prediction of the closed cell aluminium foam under cyclic loading stands to be challenging given the porous structure, internal defects and stress concentrations of the foam. This investigation gives a comprehensive understanding on the deformation behaviour and fatigue life of a closed cell aluminium foam using combined experimental and numerical approaches. An instron 8800 universal testing machine was used to carry out compression fatigue tests in order to evaluate deformation response and fatigue resistance under cyclic loading. Ansys Workbench R1 2024 was used to perform finite element analysis, assess deformation patterns, compute equivalent stress distributions and estimate fatigue life with appropriate fatigue model and K-a relationships. A 3D voronoi geometry was created by representative volume element (RVE) method using CATIA V5 software. The results from both approaches were compared to validate the numerical model and predict the most realistic fatigue prediction function for the foam. The study provides insights into fatigue mechanisms in a closed cell aluminium foam and illustrates the feasibility of finite element method as an effective tool for predicting fatigue life, performance and supporting improved material design for lightweight structural components.46 pagesenClosed cell aluminium foamAnsys Workbench R1K-a function, instron 880voronoifinite element methodCATIA V5fatigue lifeequivalent stressEngineering SciencesHozzáférhető a 2022 decemberi felsőoktatási törvénymódosítás értelmében.