Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations
With the aim of developing a thermo-mechanically-coupled large-deformation constitutive theory and a numerical-simulation capability for modeling the response of thermally-actuated shape-memory polymers, we have (i) conducted large strain compression experiments on a representative shape-memory po...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Elsevier
2011
|
| Online Access: | http://hdl.handle.net/1721.1/65390 https://orcid.org/0000-0002-4581-7888 |
| _version_ | 1811074283502305280 |
|---|---|
| author | Srivastava, Vikas Chester, Shawn Alexander Anand, Lallit |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Srivastava, Vikas Chester, Shawn Alexander Anand, Lallit |
| author_sort | Srivastava, Vikas |
| collection | MIT |
| description | With the aim of developing a thermo-mechanically-coupled large-deformation constitutive theory and a
numerical-simulation capability for modeling the response of thermally-actuated shape-memory polymers,
we have (i) conducted large strain compression experiments on a representative shape-memory polymer
to strains of approximately unity at strain rates of 10[superscript −3] s[superscript −1] and 10[superscript −1] s[superscript −1], and at temperatures ranging
from room temperature to approximately 30C above the glass transition temperature of the polymer; (ii)
formulated a thermo-mechanically-coupled large-deformation constitutive theory; (iii) calibrated the material
parameters appearing in the theory using the stress-strain data from the compression experiments; (iv)
numerically implemented the theory by writing a user-material subroutine for a widely-used finite element
program; and (v) conducted representative experiments to validate the predictive capability of our theory
and its numerical implementation in complex three-dimensional geometries. By comparing the numericallypredicted
response in these validation simulations against measurements from corresponding experiments,
we show that our theory is capable of reasonably accurately reproducing the experimental results. As a
demonstration of the robustness of the three-dimensional numerical capability, we also show results from a
simulation of the shape-recovery response of a stent made from the polymer when it is inserted in an artery
modeled as a compliant elastomeric tube. |
| first_indexed | 2024-09-23T09:46:36Z |
| format | Article |
| id | mit-1721.1/65390 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:46:36Z |
| publishDate | 2011 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/653902022-09-30T16:44:42Z Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations Srivastava, Vikas Chester, Shawn Alexander Anand, Lallit Massachusetts Institute of Technology. Department of Mechanical Engineering Anand, Lallit Srivastava, Vikas Chester, Shawn Alexander Anand, Lallit With the aim of developing a thermo-mechanically-coupled large-deformation constitutive theory and a numerical-simulation capability for modeling the response of thermally-actuated shape-memory polymers, we have (i) conducted large strain compression experiments on a representative shape-memory polymer to strains of approximately unity at strain rates of 10[superscript −3] s[superscript −1] and 10[superscript −1] s[superscript −1], and at temperatures ranging from room temperature to approximately 30C above the glass transition temperature of the polymer; (ii) formulated a thermo-mechanically-coupled large-deformation constitutive theory; (iii) calibrated the material parameters appearing in the theory using the stress-strain data from the compression experiments; (iv) numerically implemented the theory by writing a user-material subroutine for a widely-used finite element program; and (v) conducted representative experiments to validate the predictive capability of our theory and its numerical implementation in complex three-dimensional geometries. By comparing the numericallypredicted response in these validation simulations against measurements from corresponding experiments, we show that our theory is capable of reasonably accurately reproducing the experimental results. As a demonstration of the robustness of the three-dimensional numerical capability, we also show results from a simulation of the shape-recovery response of a stent made from the polymer when it is inserted in an artery modeled as a compliant elastomeric tube. National Science Foundation (U.S.) (grant DMI-0517966) Singapore-MIT Alliance 2011-08-26T14:09:18Z 2011-08-26T14:09:18Z 2010-04 2010-04 Article http://purl.org/eprint/type/JournalArticle 0022-5096 http://hdl.handle.net/1721.1/65390 Srivastava, Vikas, Shawn A. Chester, and Lallit Anand. “Thermally Actuated Shape-memory Polymers: Experiments, Theory, and Numerical Simulations.” Journal of the Mechanics and Physics of Solids 58.8 (2010) : 1100-1124. Web. https://orcid.org/0000-0002-4581-7888 en_US http://dx.doi.org/10.1016/j.jmps.2010.04.004 Journal of the Mechanics and Physics of Solids Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Elsevier Prof. Anand |
| spellingShingle | Srivastava, Vikas Chester, Shawn Alexander Anand, Lallit Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations |
| title | Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations |
| title_full | Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations |
| title_fullStr | Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations |
| title_full_unstemmed | Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations |
| title_short | Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations |
| title_sort | thermally actuated shape memory polymers experiments theory and numerical simulations |
| url | http://hdl.handle.net/1721.1/65390 https://orcid.org/0000-0002-4581-7888 |
| work_keys_str_mv | AT srivastavavikas thermallyactuatedshapememorypolymersexperimentstheoryandnumericalsimulations AT chestershawnalexander thermallyactuatedshapememorypolymersexperimentstheoryandnumericalsimulations AT anandlallit thermallyactuatedshapememorypolymersexperimentstheoryandnumericalsimulations |