High density polyethylene (HDPE): Experiments and modeling

Dusunceli N., Colak Ö. Ü.

MECHANICS OF TIME-DEPENDENT MATERIALS, vol.10, no.4, pp.331-345, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 4
  • Publication Date: 2006
  • Doi Number: 10.1007/s11043-007-9026-5
  • Journal Name: MECHANICS OF TIME-DEPENDENT MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.331-345
  • Yıldız Technical University Affiliated: Yes

Abstract

The uniaxial tension (loading and unloading), creep and relaxation experiments on high density polyethylene (HDPE) have been carried out at room temperature. The stress-strain behavior of HDPE under different strain rates, creep (relaxation) behavior at different stress (strain) levels have been investigated. These experimental results are used to compare the simulation results of a unified state variable theory, viscoplasticity theory based on overstress (VBO) and a macro-mechanical constitutive model for elasto-viscoplastic deformation of polymeric materials developed by Boyce et al. (Polymer 41:2183-2201, 2000). It is observed that elasto-viscoplasticity model by Boyce et al. (Polymer 41:2183-2201, 2000) is not good enough to simulate stress-strain, creep and relaxation behaviors of HDPE. However, the aforementioned behaviors can be modeled quantitatively by using VBO model.