Multiaxial constitutive behavior of ferroelectric materials

W. Chen*, C. S. Lynch

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Multiaxial ferroelectric/ferroelastic constitutive laws governing the behavior of ceramic lead zirconate titanate (PZT) are needed for numerical calculations of stress and electric field in the vicinity of field concentrators such as cracks, inhomogeneities, and partial electrodes. Multiaxial constitutive behavior was measured using tubular specimens, both poled and unpoled. The specimens were subjected to simultaneous axial load, internal pressure, and external pressure. Deformation was measured using strain gages. The results were used to map out a "yield" (ferroelastic polarization reorientation threshold or switching) surface. The composition used, 8/65/35 PLZT, was found to obey a Tresca criterion when in the unpoled state. The switching surface was found to be a functions of the polarization state. Kinematic and isotropic hardening appear to be good candidates for describing subsequent switching surfaces.

Original languageEnglish (US)
Pages (from-to)169-175
Number of pages7
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume123
Issue number2
DOIs
StatePublished - Apr 1 2001

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Multiaxial constitutive behavior of ferroelectric materials'. Together they form a unique fingerprint.

  • Cite this