Abstract
Open-cell aluminium foams are a relatively new material with interesting uses in different engineering applications. This study investigates the fatigue behaviour and damage accumulation of metal foams via a fatigue analysis (Weibull E-N model), a failure criterion (the relation among the prepeak compressive and tensile slopes, the reduction in the tensile stress, or the reduction in the compressive stress), and a mathematical approach (linear, quadratic, or exponential). As a result of combining the 3 mathematical approaches and 3 failure criteria, different approaches are obtained, analysed, and validated by using experimental data. Finally, the proposed approaches can be used to directly obtain the damage accumulation level for open-cell metal foams under fully reversed cyclic loading as a function of the number of cycles applied, the total strain amplitude, and the initial damage accumulation condition.
Original language | English |
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Pages (from-to) | 483-493 |
Number of pages | 11 |
Journal | Fatigue and Fracture of Engineering Materials and Structures |
Volume | 41 |
Issue number | 2 |
DOIs | |
State | Published - 1 Feb 2018 |
Keywords
- damage accumulation
- fatigue model
- metal foams