Modeling of the behavior of semi-crystalline polypropylene at elevated strain rate and temperature

K. Y. Tshai, E. M.A. Harkin-Jones, P. J. Martin, G. H. Menary

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

A non-linear viscoelastic model comprised of two components, a rubber-like hyperelastic component and a viscoelastic time-dependent relaxation spectrum was used to model the behavior of semi-crystalline PP at rates and temperatures close to that found in the thermoforming process. Temperature dependence was introduced through time-temperature-superposition (TTS) using WLF. The hyperelastic constants were identified from equibiaxial tensile experimental tests while the time-dependent relaxation spectrum was characterized through a temperature-frequency sweep analysis from a strain controlled DMTA test. Results show that the developed model is capable of simulating the behavior of semi-crystalline PP fairly well.

Original languageEnglish
Pages785-790
Number of pages6
Publication statusPublished - 14 Oct 2003
Event61st Annual Technical Conference ANTEC 2003 - Nashville, TN, United States
Duration: 4 May 20038 May 2003

Conference

Conference61st Annual Technical Conference ANTEC 2003
CountryUnited States
CityNashville, TN
Period4/05/038/05/03

Keywords

  • Biaxial
  • Polypropylene
  • Thermoforming
  • Viscoelastic

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