Effective moduli of piezoelectric material with microcavities

✍ Scribed by Qin-Hua Qin; Shou-Wen Yu

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 504 KB
• Volume: 35
• Category: Article
• ISSN: 0020-7683
• DOI: 10.1016/s0020-7683(97)00251-5

✦ Synopsis

The effective electroelastic moduli ofmicrocavity-weakened piezoelectric plates are investigated by the dilute, self-consistent, Mori Tanaka and differential micromechanics theories. The results of perturbed heat intensity, strain and electric field (SEF) due to the presence of voids are obtained for two-dimensional (2-D) piezoelectric plates with microcavities of various shapes, and then the above four micromechanics models can be established with the results. These models can be applicable to a wide range of microcavities such as ellipse, circle, crack, triangle, square and pentagon. Some numerical results are presented to illustrate the applicability of these models.