Constitutive Modeling of Epoxy Using the Mulliken-Boyce Model for Glassy Polymers

Abstract

Polymers are increasingly common in aerospace structural applications where they experience complex, non-static loads. Correspondingly, the high strain rate mechanical properties are of increasing importance. This paper gives results from an initial investigation of the properties of bisphenol-A/diethanolamine epoxy (Epon 826/DEA) across strain rates from 10(exp-3) to 10(exp5) s(exp-1). The samples were tested using Instron, traditional split Hopkinson pressure bars (SHPBs) and a miniaturized SHPB for ultra-high strain rates and dynamic mechanical analysis to look at the effects of time-temperature superposition on the strain rate effects in the samples. The Mulliken-Boyce constitutive model for glassy polymers is used to describe the mechanical properties of epoxy across the range of strain rates tested.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2008
Accession Number
ADA478946

Entities

People

  • Clive R. Siviour
  • Jason R. Foley
  • Jennifer L. Jordan

Organizations

  • University of Cambridge

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Algorithms
  • Alkanes
  • Compressive Properties
  • Diameters
  • Differential Equations
  • Epoxy Resins
  • Genetic Algorithms
  • Materials
  • Mechanical Properties
  • Mechanics
  • Strain Rate
  • Stresses
  • Thermal Properties
  • United States
  • Universities

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.

Technology Areas

  • Space