Strain localization in polyurethane foams. Experiments and theoretical model.

Giampiero Pampolini (1, 2) , Gianpietro del Piero (3)

1 LMA - Laboratoire de Mécanique et d'Acoustique [Marseille]
2 Dipartimento di Ingegneria [Ferrara]
3 Dipartimento di Ingeneria

Strain localization has been observed in polyurethane foams subjected to confined compression up to 70% of deformation. This phenomenon is described by a one-dimensional model, in which the foam is represented as a chain of non-linear elastic springs with non-convex strain energy density, and localization is attributed to progressive phase transition.

Domaines: Mécanique des solides [physics.class-ph]; Mécanique des solides [physics.class-ph]

Giampiero Pampolini, Gianpietro del Piero. Strain localization in polyurethane foams. Experiments and theoretical model.. 11th EUROMECH-MECAMAT Conference, Mar 2008, Torino, Italy. pp.29-38. ⟨hal-00462212⟩