1415 貫通き裂を有する傾斜機能圧電セラミックス積層厚板の衝撃応答(S18-3 材料設計・傾斜機能材料,S18 不規則性,不均一性構造・材料の数理モデルとその応用)

概要

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The dynamic fracture problem of a sandwiched functionally graded piezoelectric slab containing a crack perpendicular to the boundaries is considered. It is assumed that the electroelastic properties of the medium vary continuously in the thickness direction. Based on the integral transform techniques, the problem due to the in-plane mechanical impact, loads is reduced to the solutions of a singular integral equation. An internal crack and a terminated crack are examined. Numerical calculations are made for the variations of the dynamic stress intensity factors and the dynamic energy density factors versus time while the geometric parameters and the material nonhomogeneity are changed.
2005-09-18