Rheological Properties of Polyamide: Experimental Studies and Constitutive Modeling

Cyprian Suchocki; Rafał Molak

doi:10.1007/s10118-019-2180-9

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Rheological Properties of Polyamide: Experimental Studies and Constitutive Modeling

ARTICLE | Updated：2021-02-18

- Rheological Properties of Polyamide: Experimental Studies and Constitutive Modeling
- Chinese Journal of Polymer Science Vol. 37, Issue 2, Pages: 178-188(2019)
- Affiliations：
  
  a.Fundamental Technical Sciences Division, Warsaw University of Life Sciences, Nowoursynowska 164, 02-787 Warsaw, Poland
  b.Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland
- Author bio：
  
  cyprian_suchocki@sggw.pl
- Funds：
- DOI：10.1007/s10118-019-2180-9
  CLC：
- Received：06 July 2018，
  
  Revised：2018-8-1，
  
  Accepted：06 August 2018，
  
  Online First：10 September 2018，
  
  Published：2019-02
- Accepted：
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Citation: Suchocki, C.; Molak, R. Rheological properties of polyamide: experimental studies and constitutive modeling. Chinese J. Polym. Sci. 2019, 37, 178–188

Cyprian Suchocki, Rafał Molak. Rheological Properties of Polyamide: Experimental Studies and Constitutive Modeling[J]. Chinese Journal of Polymer Science, 2019, 37(2): 178-188.
Citation: Suchocki, C.; Molak, R. Rheological properties of polyamide: experimental studies and constitutive modeling. Chinese J. Polym. Sci. 2019, 37, 178–188 DOI： 10.1007/s10118-019-2180-9.

Cyprian Suchocki, Rafał Molak. Rheological Properties of Polyamide: Experimental Studies and Constitutive Modeling[J]. Chinese Journal of Polymer Science, 2019, 37(2): 178-188. DOI： 10.1007/s10118-019-2180-9.

摘要

Abstract

This work is focused on simulating the rheological effects in polyamide. An experimental study is carried out in order to assess such features of polyamide as: the hysteretic behavior

the strain rate dependence

and the stress relaxation. The material response in tension is investigated. Digital images correlation method (DIC) is employed in order to measure the material compressibility. A newly developed constitutive model

which was previously used to simulate the mechanical response of polyethylene subjected to moderate strains and compressive loadings

is applied to capture the large strain

inelastic behavior of polyamide in tension. The gathered experimental data are utilized to determine the values of constitutive constants of viscoelasticity and plasticity

which describe the rheological properties of polyamide. The determined material parameters are included in the text. Different strategies for evaluating the material parameters are discussed. The proposed constitutive equation is implemented into the finite element (FE) system

ABAQUS

by taking advantage of the user subroutine UMAT

which allows to define custom material laws. Some exemplary FE simulations that were used to investigate the performance of the developed subroutine are described.

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Keywords

references

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