TY - JOUR
T1 - Torsion and normal force responses of glassy polymers in the sub-yield regime
AU - McKenna, Gregory B.
N1 - Funding Information:
The author thanks the Joliot Professorship at the E.S.P.C.I. in Paris for the opportunity to write the article while on developmental leave from Texas Tech University. In addition, partial support was provided by the National Science Foundation under Grant DMR-1207070 . I would also like to particularly recognize that, from my first acquaintance with Alan Gent at a Rubber Division Meeting in Cleveland, Ohio, he was always an inspiration for how good science is performed and a challenging intellect in all of our interactions.
Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.
PY - 2015/1
Y1 - 2015/1
N2 - While there is a major body of literature relating the non-linear response of both elastomers and polymer melts with the molecular structure and topology of the chains, the same cannot be said of the non-linear response, especially that below the yield point, for polymer glasses. Here we take an approach that uses ideas of finite deformation elasticity and apply them to the isochronal response of glassy polymers in torsional deformations. We find that, while the torsional (shear) responses are similar for different molecular structures, there seems to be a strong effect of side group relaxations on the normal forces. The results are discussed in terms of the strain energy density function and the opportunities for future research.
AB - While there is a major body of literature relating the non-linear response of both elastomers and polymer melts with the molecular structure and topology of the chains, the same cannot be said of the non-linear response, especially that below the yield point, for polymer glasses. Here we take an approach that uses ideas of finite deformation elasticity and apply them to the isochronal response of glassy polymers in torsional deformations. We find that, while the torsional (shear) responses are similar for different molecular structures, there seems to be a strong effect of side group relaxations on the normal forces. The results are discussed in terms of the strain energy density function and the opportunities for future research.
KW - Glass
KW - Non-linear viscoelasticity
KW - Normal force
KW - Polymer
KW - Strain energy function
KW - Torsion
UR - http://www.scopus.com/inward/record.url?scp=84912562682&partnerID=8YFLogxK
U2 - 10.1016/j.ijnonlinmec.2014.05.009
DO - 10.1016/j.ijnonlinmec.2014.05.009
M3 - Article
AN - SCOPUS:84912562682
VL - 68
SP - 37
EP - 40
JO - International Journal of Non-Linear Mechanics
JF - International Journal of Non-Linear Mechanics
SN - 0020-7462
ER -