Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling
This work addresses the large strain behaviors of thermoplastic polyurethanes (TPUs) spanning a range of fractions of hard and soft contents in both experiment and theoretical modeling. The key mechanical features involve a combination of elasticity and inelasticity, and are quantified experimentall...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Elsevier BV
2020
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| Online Access: | https://hdl.handle.net/1721.1/125802 |
| _version_ | 1826203213167067136 |
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| author | Cho, Hansohl Mayer, Steffen Pöselt, Elmar Susoff, Markus in 't Veld, Pieter J. Rutledge, Gregory C Boyce, Mary C. |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Cho, Hansohl Mayer, Steffen Pöselt, Elmar Susoff, Markus in 't Veld, Pieter J. Rutledge, Gregory C Boyce, Mary C. |
| author_sort | Cho, Hansohl |
| collection | MIT |
| description | This work addresses the large strain behaviors of thermoplastic polyurethanes (TPUs) spanning a range of fractions of hard and soft contents in both experiment and theoretical modeling. The key mechanical features involve a combination of elasticity and inelasticity, and are quantified experimentally under a broad variety of loading scenarios. A finite deformation constitutive model is then presented to capture the main features of the stress-strain data, which are strongly dependent on fractions of hard and soft contents. The stress-strain behavior of these TPUs is characterized by highly nonlinear rate-dependent hyperelastic-viscoplasticity, in which substantial energy dissipation is accompanied by shape recovery as well as softening. Agreement between the model and the experimental data for the representative TPUs provides physical insight into the underlying deformation mechanisms in this important class of soft materials that exhibit both elastomeric and plastomeric characteristics. |
| first_indexed | 2024-09-23T12:33:07Z |
| format | Article |
| id | mit-1721.1/125802 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:33:07Z |
| publishDate | 2020 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1258022022-09-28T08:33:01Z Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling Cho, Hansohl Mayer, Steffen Pöselt, Elmar Susoff, Markus in 't Veld, Pieter J. Rutledge, Gregory C Boyce, Mary C. Massachusetts Institute of Technology. Department of Chemical Engineering This work addresses the large strain behaviors of thermoplastic polyurethanes (TPUs) spanning a range of fractions of hard and soft contents in both experiment and theoretical modeling. The key mechanical features involve a combination of elasticity and inelasticity, and are quantified experimentally under a broad variety of loading scenarios. A finite deformation constitutive model is then presented to capture the main features of the stress-strain data, which are strongly dependent on fractions of hard and soft contents. The stress-strain behavior of these TPUs is characterized by highly nonlinear rate-dependent hyperelastic-viscoplasticity, in which substantial energy dissipation is accompanied by shape recovery as well as softening. Agreement between the model and the experimental data for the representative TPUs provides physical insight into the underlying deformation mechanisms in this important class of soft materials that exhibit both elastomeric and plastomeric characteristics. 2020-06-15T18:58:58Z 2020-06-15T18:58:58Z 2017-10 2017-08 2020-06-08T17:24:50Z Article http://purl.org/eprint/type/JournalArticle 0032-3861 https://hdl.handle.net/1721.1/125802 Cho, Hansohl et al. "Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling." Polymer 128 (October 2017): 87-99 © 2017 Elsevier Ltd en http://dx.doi.org/10.1016/j.polymer.2017.08.065 Polymer Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV Prof. Rutledge via Ye Li |
| spellingShingle | Cho, Hansohl Mayer, Steffen Pöselt, Elmar Susoff, Markus in 't Veld, Pieter J. Rutledge, Gregory C Boyce, Mary C. Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling |
| title | Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling |
| title_full | Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling |
| title_fullStr | Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling |
| title_full_unstemmed | Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling |
| title_short | Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling |
| title_sort | deformation mechanisms of thermoplastic elastomers stress strain behavior and constitutive modeling |
| url | https://hdl.handle.net/1721.1/125802 |
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