Abstract
Observations are reported on isotactic polypropylene in uniaxial cyclic tensile tests at room temperature. A model is derived for the viscoplastic response of semicrystalline polymers at three-dimensional deformations with small strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. It is shown that polypropylene reveals some characteristic features of the Mullins effect that can be quantitatively predicted by the constitutive equations.
| Original language | English |
|---|---|
| Pages (from-to) | 3336-3345 |
| Number of pages | 10 |
| Journal | International Journal of Solids and Structures |
| Volume | 46 |
| Issue number | 18-19 |
| DOIs | |
| State | Published - 1 Sep 2009 |
| Externally published | Yes |
Keywords
- Constitutive equations
- Cyclic deformation
- Isotactic polypropylene
- Mullins' effect
- Viscoplasticity
ASJC Scopus subject areas
- Modeling and Simulation
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Applied Mathematics