Two Parallel Penny-Shaped or Annular Cracks in a Functionally Graded Piezoelectric Strip Under Electric Loading
2個の平行な円板状あるいは円環状き裂を有する傾斜機能圧電厚板の電気弾性応答

Sei UEDA, Tohru IOGAWA, Naoki NISHIMURA
2009 TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A  
In this paper , the mixed − mode fracture problem 〔 コ f two penny − shaped or annu 玉 ar cracks in a functionally graded piezoelectric materia1 ( FGPM ) strip is considered . It is assumed tha 亡 the ctectroelastic pruperties of the strip vary continuously along the thickness of thc strip , and that the strip 三 s under electric loadlng. The crack faces arc supposed t(> be insulated electrica11y , The problem is formulated in terrns Qf a syste 王 n of si ! igulur int , egral equutions , wh 三 ch are
more » ... tions , wh 三 ch are solved numeri − cally , Numerical calculations are し arr 三 ed out , alld the . gtress and electric displacemellt 童 ntensity factors are presented for various values of dimcnsionless parameters representing the crak si 防 c , the crack location , and the material nonhomogeneity 、 It can be found that the nermalized intensity faetors are ullder the great inlluence of the geomotric parameters and thc effect of the material nonh 〔 〕 mogeneity
doi:10.1299/kikaia.75.719 fatcat:vneiwhayyfh3vk7koexw5ezuma