Characterizing and modeling the pressure- and rate-dependent elastic-plastic-damage behavior of polypropylene-based polymers

Ditho Pulungan, Arief Yudhanto, Shiva Goutham, Gilles Lubineau*, Recep Yaldiz, Warden Schijve

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Polymers in general exhibit pressure- and rate-dependent behavior. Modeling such behavior requires extensive, costly and time-consuming experimental work. Common simplifications may lead to severe inaccuracy when using the model for predicting the failure of structures. Here, we propose a viscoelastic-viscoplastic damage model for polypropylene-based polymers. Such a set of constitutive equations can be used to describe the response of polypropylene under various strain-rates and stress-triaxiality conditions. The model can also be applied to a broad range of thermoplastic polymers. The experimental campaign that is needed to identify every parameter of the model accurately is detailed. The proposed model was validated by performing 3-point bending tests at different loading speeds, where the load-displacement response of polypropylene beam up to failure was accurately predicted.

Original languageEnglish (US)
Pages (from-to)433-445
Number of pages13
JournalPolymer Testing
Volume68
DOIs
StatePublished - Jul 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

  • Damage model
  • Impact polypropylene
  • Stress relaxation
  • Viscoelasticity
  • Viscoplasticity

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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