True intrinsic mechanical behaviour of semi-crystalline and amorphous polymers: Influences of volume deformation and cavities shape - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue International Journal of Plasticity Année : 2013

True intrinsic mechanical behaviour of semi-crystalline and amorphous polymers: Influences of volume deformation and cavities shape

Marc Ponçot
Abdesselam Dahoun

Résumé

A model enabling the determination of the intrinsic mechanical constitutive equations of uniaxially stretched polymers is presented. This model takes into account the cavitation-induced volume strain which can occur during the deformation of such materials. In particular, the true intrinsic axial stress and strain depends on the overall volume strain and a form factor depicting the evolution of the voids shape. Based on our model, the true intrinsic behaviour of high-density polyethylene (HDPE), polypropylene/ethylene-propylene rubber (PP/EPR), and polyethylene terephtalate (PET) was assessed in tension. Compared to the overall true behaviour, the intrinsic true behaviour of the materials did not exhibit anomalies at large strain levels with changing experimental parameters (strain rate and temperature), and can be accurately predicted by means of phenomenological constitutive equations as the one proposed by G'sell and Jonas (1979).
Fichier principal
Vignette du fichier
INTPLA-D-12-00053R2-hal.pdf (696.42 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01296898 , version 1 (25-01-2023)

Identifiants

Citer

Marc Ponçot, F. Addiego, Abdesselam Dahoun. True intrinsic mechanical behaviour of semi-crystalline and amorphous polymers: Influences of volume deformation and cavities shape. International Journal of Plasticity, 2013, 40, pp.126-139. ⟨10.1016/j.ijplas.2012.07.007⟩. ⟨hal-01296898⟩
62 Consultations
51 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More