Applicability of the crack face electrical boundary conditions in piezoelectric mechanics

Baolin Wang, Jiecai Han, Shanyi Du

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The electrical boundary conditions on the crack faces and their applicability in piezoelectric materials are discussed. A slit crack and a notch of finite thickness in piezoelectric materials subjected to combined mechanical and electrical loads is considered. Here, a crack is defined as a notch without thickness, which is filled with air or vacuum. The crack or notch is perpendicular to the poling direction of the medium. The ideal crack face electrical boundary conditions, i.e., the electrically permeable crack and the electrically impermeable crack, are investigated first. Then dependence of the field intensity factors on notch thickness at the notch tips is analyzed to obtain a closed-form. The results are compared with the ideal crack solutions. Some useful results are found.
Original languageEnglish
Pages (from-to)290-296
Number of pages7
JournalActa Mechanica Solida Sinica
Volume17
Issue number4
DOIs
Publication statusPublished - 2004

Keywords

  • cracks
  • fracture mechanics
  • piezoelectric materials

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