Simulation of mechanical response during polymer crystallization around rigid inclusions and voids: homogeneous crystallization

Ruojuan Ma, Mehrdad Negahban

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The mechanical effects of homogeneous polymer crystallization around single defects are studied, showing how crystallization can develop residual stresses, and change material moduli. Defects in the form of rigid inclusions or voids are considered, either having spherical or cylindrical geometry. Problems with spherical symmetry are considered in the case of a spherical defect, and plane strain problems with axial symmetry are considered in the case of a cylindrical defect. The predicted response is based on a constitutive model developed by Negahban et al. (1993, Int. J. Eng. Sci. 31(1), 93-113), and shows that large residual stresses develop, which may result in debonding or fracture.

Original languageEnglish (US)
Pages (from-to)25-50
Number of pages26
JournalMechanics of Materials
Volume21
Issue number1
DOIs
StatePublished - Jul 1995

Fingerprint

Crystallization
voids
Polymers
inclusions
crystallization
Defects
defects
polymers
residual stress
Residual stresses
simulation
plane strain
Debonding
symmetry
Constitutive models
Geometry
geometry

Keywords

  • Composites
  • Crystallization
  • Defects
  • Inclusions
  • Inhomogeneous
  • Mechanics
  • Polymers
  • Stress
  • Voids

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Mechanics of Materials

Cite this

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abstract = "The mechanical effects of homogeneous polymer crystallization around single defects are studied, showing how crystallization can develop residual stresses, and change material moduli. Defects in the form of rigid inclusions or voids are considered, either having spherical or cylindrical geometry. Problems with spherical symmetry are considered in the case of a spherical defect, and plane strain problems with axial symmetry are considered in the case of a cylindrical defect. The predicted response is based on a constitutive model developed by Negahban et al. (1993, Int. J. Eng. Sci. 31(1), 93-113), and shows that large residual stresses develop, which may result in debonding or fracture.",
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AB - The mechanical effects of homogeneous polymer crystallization around single defects are studied, showing how crystallization can develop residual stresses, and change material moduli. Defects in the form of rigid inclusions or voids are considered, either having spherical or cylindrical geometry. Problems with spherical symmetry are considered in the case of a spherical defect, and plane strain problems with axial symmetry are considered in the case of a cylindrical defect. The predicted response is based on a constitutive model developed by Negahban et al. (1993, Int. J. Eng. Sci. 31(1), 93-113), and shows that large residual stresses develop, which may result in debonding or fracture.

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KW - Inclusions

KW - Inhomogeneous

KW - Mechanics

KW - Polymers

KW - Stress

KW - Voids

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