軸対称圧電材接合構造の応力特異性解析

概要

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Stress singularities at the edge of a piezoelectric bi-material bonded structure with hourglass-shape and straight sides under an axisymmetric deformation are analyzed. The bonded materials are assumed to be transversely isotropic to the symmetric axis of deformation. One of the two materials is piezoelectric and another one is either a dissimilar piezoelectric or a usual elastic material. The analysis assumes perfect bonding and is based on a general solution consisting of three quasiharmonic functions. The eigenfunction expansion method is used to determine the singularities. The discussions are given for the difference of the stress singularities between the cases where the electromechanical coupling effect is considered or not. Moreover, the difference between the axisymmetric deformation and the plane strain deformation are made clear. Finally, the theoretical results are compared with the numerical ones and the good agreement between them are demonstated.
一般社団法人日本機械学会の論文
2001-02-25