Modeling of the long-term behavior of glassy polymers
(2012) In Journal of Engineering Materials and Technology 135(1).- Abstract
- The constitutive model for glassy polymers proposed by Arruda and Boyce (BPA model) is reviewed and compared to experimental data for long-term loading. The BPA model has previously been shown to capture monotonic loading accurately, but for unloading and long-term behavior, the response of the BPA model is found to deviate from experimental data. In the present paper, we suggest an efficient extension that significantly improves the predictive capability of the BPA model during unloading and long-term recovery. The new, extended BPA model (EBPA model) is calibrated to experimental data of polycarbonate (PC) in various loading-unloading situations and deformation states. The numerical treatment of the BPA model associated with the finite... (More)
- The constitutive model for glassy polymers proposed by Arruda and Boyce (BPA model) is reviewed and compared to experimental data for long-term loading. The BPA model has previously been shown to capture monotonic loading accurately, but for unloading and long-term behavior, the response of the BPA model is found to deviate from experimental data. In the present paper, we suggest an efficient extension that significantly improves the predictive capability of the BPA model during unloading and long-term recovery. The new, extended BPA model (EBPA model) is calibrated to experimental data of polycarbonate (PC) in various loading-unloading situations and deformation states. The numerical treatment of the BPA model associated with the finite element analysis is also discussed. As a consequence of the anisotropic hardening, the plastic spin enters the model. In order to handle the plastic spin in a finite element formulation, an algorithmic plastic spin is introduced. In conjunction with the backward Euler integration scheme use of the algorithmic plastic spin leads to a set of algebraic equations that provides the updated state. Numerical examples reveal that the proposed numerical algorithm is robust and well suited for finite element simulations. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3164163
- author
- Holopainen, Sami and Wallin, Mathias LU
- organization
- publishing date
- 2012-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Engineering Materials and Technology
- volume
- 135
- issue
- 1
- article number
- MATS-12-1055
- pages
- 11 pages
- publisher
- American Society Of Mechanical Engineers (ASME)
- external identifiers
-
- wos:000314746800001
- scopus:84871898162
- ISSN
- 0094-4289
- DOI
- 10.1115/1.4007499
- language
- English
- LU publication?
- yes
- id
- 4f13c375-5146-4785-bab4-98a41a4c0217 (old id 3164163)
- date added to LUP
- 2016-04-01 10:30:30
- date last changed
- 2022-03-04 20:15:23
@article{4f13c375-5146-4785-bab4-98a41a4c0217,
abstract = {{The constitutive model for glassy polymers proposed by Arruda and Boyce (BPA model) is reviewed and compared to experimental data for long-term loading. The BPA model has previously been shown to capture monotonic loading accurately, but for unloading and long-term behavior, the response of the BPA model is found to deviate from experimental data. In the present paper, we suggest an efficient extension that significantly improves the predictive capability of the BPA model during unloading and long-term recovery. The new, extended BPA model (EBPA model) is calibrated to experimental data of polycarbonate (PC) in various loading-unloading situations and deformation states. The numerical treatment of the BPA model associated with the finite element analysis is also discussed. As a consequence of the anisotropic hardening, the plastic spin enters the model. In order to handle the plastic spin in a finite element formulation, an algorithmic plastic spin is introduced. In conjunction with the backward Euler integration scheme use of the algorithmic plastic spin leads to a set of algebraic equations that provides the updated state. Numerical examples reveal that the proposed numerical algorithm is robust and well suited for finite element simulations.}},
author = {{Holopainen, Sami and Wallin, Mathias}},
issn = {{0094-4289}},
language = {{eng}},
number = {{1}},
publisher = {{American Society Of Mechanical Engineers (ASME)}},
series = {{Journal of Engineering Materials and Technology}},
title = {{Modeling of the long-term behavior of glassy polymers}},
url = {{http://dx.doi.org/10.1115/1.4007499}},
doi = {{10.1115/1.4007499}},
volume = {{135}},
year = {{2012}},
}