期刊
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
卷 32, 期 4, 页码 479-494出版社
SHANGHAI UNIV
DOI: 10.1007/s10483-011-1432-8
关键词
eigenvalue problem; piezoelectricity; porous; uniqueness theorem; reciprocal theorem
资金
- University Grant Commission [8(42)/2010 (MRP/NRCB)]
The uniqueness theorem and the theorem of reciprocity in the linearized porous piezoelectricity are established under the assumption of positive definiteness of elastic and electric fields. General theorems in the linear theory of porous piezoelectric materials are proved for the quasi-static electric field approximation. The uniqueness theorem is also proved without using the positive definiteness of the elastic field. An eigenvalue problem associated with free vibrations of a porous piezoelectric body is studied using the abstract formulation. Some properties of operators are also proved. The problem of frequency shift due to small disturbances, based on an abstract formulation, is studied using a variational and operator approach. A perturbation analysis of a special case is also given.
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