Stress and Displacement Fields of a Propagating Mode III Crack in Orthotropic Piezoelectric Materials

직교이방성 압전재료에서 전파 하는 모드 III 균열의 응력장과 변위장

  • Lee, Kwang-Ho (Dept. of Mechanical and Automotive Engineering, Kyungpook Nat'l Univ.)
  • 이광호 (경북대학교 기계자동차공학부)
  • Received : 2009.10.22
  • Accepted : 2010.04.05
  • Published : 2010.06.01


The stress and displacement fields of a permeable propagating crack in orthotropic piezoelectric materials under anti-plane shear mechanical load and in-plane electric load are analyzed. The equations of motion for the propagating crack in piezoelectric materials are developed and the solution on the stress and the displacement fields through an asymptotic analysis was obtained. The influences of the piezoelectric constant and of the dielectric permittivity on the stress and displacement fields at the crack tip are explicitly clarified. Using the stress and displacement fields obtained in this study, the characteristics of stress and displacement at a propagating crack tip in piezoelectric materials are discussed.


Orthotropic Piezoelectric Materials;Propagating Crack;Stress and Displacement Fields;Permeable Crack


Supported by : KNU


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