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Deformation of epoxy shape memory polymer foam: Part II. Mesoscale modeling and simulation by M.A. Di Prima; K. Gall; D.L. McDowell; R. Guldberg; A. Lin; T. Sanderson; D. Campbell; S.C. Arzberger is a Engineering article available to read on EtoBox.

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The present study focuses on how the relative density of an epoxy shape memory polymer foam affects mesostructural response to deformation. The modeled foam had relative densities of 20%, 30%, and 40%, with a glass transition temperature (T g ) near 85 °C as measured by dynamic mechanical analysis. Statistical analysis of the dynamic mechanical analyisis data showed that stiffness did not significantly vary across foam samples of the same relative density. The stress-strain response of the base polymer was obtained through tensile and compressive tests at T g +17 °C and fit to a hyperelastic material model using the ABA-QUS material evaluation function. Meshes for the three relative densities were obtained through micro-CT scanning of actual foam, to accurately represent the mesostructure. Overall compression responses predicted by ABAQUS correlated well with experimental stress-strain responses. The simulations qualitatively showed a shift in mesostructure response to deformation between the 20% relative dense material and the materials with higher relative densities. Quantitatively, both the local maximum shear strain and tensile strain cumulative probability distributions within

Who reads Deformation of epoxy shape memory polymer foam: Part II. Mesoscale modeling and simulation?

Author

M.A. Di Prima; K. Gall; D.L. McDowell; R. Guldberg; A. Lin; T. Sanderson; D. Campbell; S.C. Arzberger

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0167-6636)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)