TY - JOUR
T1 - Fatigue and damage accumulation in open cell aluminium foams
AU - Pinto, H.
AU - Amini, A.
AU - Peña,
AU - Moraga, P.
AU - Valenzuela, M.
N1 - Funding Information:
This research was financially supported by the Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) of Chile through the project FONDECYT INICIACION 11110365.
Publisher Copyright:
© 2017 Wiley Publishing Ltd.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - 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.
AB - 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.
KW - damage accumulation
KW - fatigue model
KW - metal foams
UR - http://www.scopus.com/inward/record.url?scp=85040114487&partnerID=8YFLogxK
U2 - 10.1111/ffe.12716
DO - 10.1111/ffe.12716
M3 - Article
AN - SCOPUS:85040114487
VL - 41
SP - 483
EP - 493
JO - Fatigue and Fracture of Engineering Materials and Structures
JF - Fatigue and Fracture of Engineering Materials and Structures
SN - 8756-758X
IS - 2
ER -