A thermomechanical crystal plasticity constitutive model for ultrasonic consolidation

Tamer El Sayed*, Amir Siddiq

*Corresponding author for this work

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We present a micromechanics-based thermomechanical constitutive model to simulate the ultrasonic consolidation process. Model parameters are calibrated using an inverse modeling approach. A comparison of the simulated response and experimental results for uniaxial tests validate and verify the appropriateness of the proposed model. Moreover, simulation results of polycrystalline aluminum using the identified crystal plasticity based material parameters are compared qualitatively with the electron back scattering diffraction (EBSD) results reported in the literature. The validated constitutive model is then used to simulate the ultrasonic consolidation process at sub-micron scale where an effort is exerted to quantify the underlying micromechanisms involved during the ultrasonic consolidation process.

Original languageEnglish
Pages (from-to)241-251
Number of pages11
JournalComputational Materials Science
Volume51
Issue number1
DOIs
Publication statusPublished - 1 Jan 2012

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Keywords

  • constitutive model
  • crystal plasticity theory
  • finite element analysis
  • polycrystalline materials
  • ultrasonic softening

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)
  • Computer Science(all)
  • Physics and Astronomy(all)
  • Computational Mathematics
  • Mechanics of Materials

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