A thermomechanical crystal plasticity based constitutive model for ultrasonic consolidation process

Muhammad Amir, Tamer El Sayed

Research output: Contribution to journalArticle

32 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
DOIs
Publication statusPublished - 2012

Fingerprint

Crystal Plasticity
consolidation
Consolidation
Constitutive Model
Constitutive models
plastic properties
Plasticity
ultrasonics
Ultrasonics
Crystals
Inverse Modeling
crystals
Micromechanics
Backscattering
Aluminum
micromechanics
Diffraction
Quantify
Scattering
Electron

Keywords

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

Cite this

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A thermomechanical crystal plasticity based constitutive model for ultrasonic consolidation process. / Amir, Muhammad; El Sayed, Tamer.

In: Computational Materials Science, Vol. 51, 2012, p. 241-251.

Research output: Contribution to journalArticle

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T1 - A thermomechanical crystal plasticity based constitutive model for ultrasonic consolidation process

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AU - El Sayed, Tamer

PY - 2012

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AB - 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.

KW - crystal plasticity theory

KW - polycrystalline materials

KW - ultrasonic softening

KW - finite element analysis

KW - constitutive model

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