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

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

Research output: Contribution to journalArticlepeer-review

8 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. Our model can also be applied to a broad range of thermoplastic polymers. We detail the experimental campaign that is needed to identify every parameter of the model at best. We validated the proposed model 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 - Feb 24 2018

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