Behavior of high-density polyethylene at high strain rates

Authors

  • Jan Trnka Institute of Thermomechanics of the CAS, v. v. i.
  • Eva Nezbedová UNO Praha, spol. s.r.o. Na Návsi 342/2, 252 18 Úhonice, e-mai
  • Jan Kober Institute of Thermomechanics of the CAS, v. v. i.
  • Jaroslav Buchar Institute of Thermomechanics of the CAS, v. v. i.

DOI:

https://doi.org/10.24132/acm.2021.680

Keywords:

dynamic loading, strain rate, split Hopkinson pressure bar, direct Hopkinson test, viscoelasticity

Abstract

The Hopkinson split pressure bar (HSPB) was used for the testing of three polymers at strain rates between 102 to 103 s-1. Higher strain rates were achieved using the direct Hopkinson test. Experimental data were evaluated in time as well as in the frequency domain. A more detailed analysis in the frequency domain showed that the description of tested polymers can be described in the framework of the linear viscoelasticity. The use of the direct Hopkinson test showed the occurrence of a permanent strain.

Author Biographies

  • Jan Trnka, Institute of Thermomechanics of the CAS, v. v. i.
    Department D 4 - Impact and Waves in Solids
  • Jan Kober, Institute of Thermomechanics of the CAS, v. v. i.
    Department D 4 - Impact and Waves in Solids
  • Jaroslav Buchar, Institute of Thermomechanics of the CAS, v. v. i.
    Department D 4 - Impact and Waves in Solids

Downloads

Published

30-Jun-2021

Issue

Vol. 15 No. 1 (2021)

Section

Articles

License

Copyright (c) 2021 Applied and Computational Mechanics

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

“Behavior of high-density polyethylene at high strain rates” (2021) Applied and Computational Mechanics, 15(1). doi:10.24132/acm.2021.680.