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Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations by Vikas Srivastava; Shawn A. Chester; Lallit Anand is a Engineering article available to read on EtoBox.

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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 À 3 and 10 À 1 s À 1 , and at temperatures ranging from room temperature to approximately 30 1C 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 threedimensional geometries. By comparing the numerically predicted response in these validation simulations against measurements from corresponding experiments, we show that our theory is capable of reasonably accu

Who reads Thermally actuated shape-memory polymers: Experiments, theory, and numerical simulations?

Author

Vikas Srivastava; Shawn A. Chester; Lallit Anand

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0022-5096)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)