A void growth- and coalescence-dependent anisotropic damage model for polymeric foams

Kwon, Sun Hong; Kim, Jeong-Dae; Lee, Jae-Myung

doi:10.1007/s00161-020-00926-9

Cited by 2 publications

(1 citation statement)

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“…[ 35 ] FEA was also used in an anisotropic elastic damage constitutive model. [ 36 ] But still the accurate description of the plateau regime is a challenge. [ 37 ] The anisotropic elastoplastic deformation behavior of polymeric foams in compression was recently quite successful simulated with FEA, based on observed µCT images, which were used to fit an elongated rhombic dodecahedron as model to mimic the 3D structure of the anisotropic foams.…”

Section: Resultsmentioning

confidence: 99%

Anisotropy Effects in the Shape‐Memory Performance of Polymer Foams

Sauter

Kratz

Madbouly

et al. 2021

Macro Materials & Eng

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Isotropic and anisotropic shape‐memory polymer foams are prepared by supercritical carbon dioxide foaming from a multiblock copolymer (PDLCL) consisting of poly(ω‐pentadecalactone) and poly(ε‐caprolactone) segments. Analysis by micro‐computed tomography reveals for the anisotropic PDLCL foam cells a high shape anisotropy ratio of R = 1.72 ± 0.62 with a corresponding Young's compression moduli ratio between longitudinal and transversal direction of 4.3. The experimental compression data in the linear elastic range can be well described by the anisotropic open foam model of Gibson and Ashby. A micro‐morphological analysis for single pores using scanning electron microscopy images permits the correlation between the macroscopic stress‐compression behavior and microscale structural changes.

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Section: Resultsmentioning

confidence: 99%