TY - JOUR
T1 - Cyclic compression behaviour of multilayered nanostructured foams: numerical meso scale modelling and experimental validation
AU - Montero, Ignacio
AU - Sesana, Raffaella
AU - D'hers, Sebastian
AU - Scarpa, Fabrizio
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/1/1
Y1 - 2023/1/1
N2 - In the present paper the mechanical fatigue behavior of a complex porous and hierarchical structure at a macroscopic scale is investigated from the experimental point of view. A numerical model describing the cyclic behavior is developed considering the geometric structure of the foam and the constitutive model, using a macro-mechanical hyperelastic material Ogden models. The coated open cell foam is characterized by Representative Volume Element of Finite Elements (FEA-RVE) model at the mesoscale with periodic boundary conditions. The RVE model is based on the microscopic foam topology and density, then a tessellation is applied to randomly generate the inner structure. The FEA model is then inserted, and the overall response is validated and calibrated from quasi-static and fatigue compression tests run at two different frequencies. The mesoscale model is used to simulate the mechanism involved in the compression of PU hierarchical composite foams, the structure buckling and the dissipated energy
AB - In the present paper the mechanical fatigue behavior of a complex porous and hierarchical structure at a macroscopic scale is investigated from the experimental point of view. A numerical model describing the cyclic behavior is developed considering the geometric structure of the foam and the constitutive model, using a macro-mechanical hyperelastic material Ogden models. The coated open cell foam is characterized by Representative Volume Element of Finite Elements (FEA-RVE) model at the mesoscale with periodic boundary conditions. The RVE model is based on the microscopic foam topology and density, then a tessellation is applied to randomly generate the inner structure. The FEA model is then inserted, and the overall response is validated and calibrated from quasi-static and fatigue compression tests run at two different frequencies. The mesoscale model is used to simulate the mechanism involved in the compression of PU hierarchical composite foams, the structure buckling and the dissipated energy
UR - https://www.sciencedirect.com/science/article/pii/S1350630722008706
U2 - 10.1016/j.engfailanal.2022.106903
DO - 10.1016/j.engfailanal.2022.106903
M3 - Article (Academic Journal)
SN - 1350-6307
VL - 143
JO - Engineering Failure Analysis
JF - Engineering Failure Analysis
IS - B
M1 - 106903
ER -