Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis
This paper concerns the homogenization problems for porous piezocomposites with infinitely thin metalized pore surfaces. To determine the effective properties, we used the effective moduli method and the finite element approaches, realized in the ANSYS package. As a simple model of the representativ...
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| Format: | Article |
| Language: | English |
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World Scientific Publishing
2020-10-01
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| Series: | Journal of Advanced Dielectrics |
| Subjects: | |
| Online Access: | http://www.worldscientific.com/doi/pdf/10.1142/S2010135X20500186 |
| _version_ | 1818417597262069760 |
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| author | Andrey Nasedkin Mohamed Elsayed Nassar |
| author_facet | Andrey Nasedkin Mohamed Elsayed Nassar |
| author_sort | Andrey Nasedkin |
| collection | DOAJ |
| description | This paper concerns the homogenization problems for porous piezocomposites with infinitely thin metalized pore surfaces. To determine the effective properties, we used the effective moduli method and the finite element approaches, realized in the ANSYS package. As a simple model of the representative volume, we applied a unit cell of porous piezoceramic material in the form of a cube with one spherical pore. We modeled metallization by introducing an additional layer of material with very large permittivity coefficients along the pore boundary. Then we simulated the nonuniform polarization field around the pore. For taking this effect into account, we previously solved the electrostatic problem for a porous dielectric material with the same geometric structure. From this problem, we obtained the polarization field in the porous piezomaterial; after that, we modified the material properties of the finite elements from dielectric to piezoelectric with element coordinate systems whose corresponding axes rotated along the polarization vectors. As a result, we obtained the porous unit cell of an inhomogeneously polarized piezoceramic matrix. From the solutions of these homogenization problems, we observed that the examined porous piezoceramics composite with metalized pore boundaries has more extensive effective transverse and shear piezomoduli, and effective dielectric constants compared to the conventional porous piezoceramics. The analysis also showed that the effect of the polarization field inhomogeneity is insignificant on the ordinary porous piezoceramics; however, it is more significant on the porous piezoceramics with metalized pore surfaces. |
| first_indexed | 2024-12-14T12:09:18Z |
| format | Article |
| id | doaj.art-9803153a69d0454d943671c26cbcc2e7 |
| institution | Directory Open Access Journal |
| issn | 2010-135X 2010-1368 |
| language | English |
| last_indexed | 2024-12-14T12:09:18Z |
| publishDate | 2020-10-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Journal of Advanced Dielectrics |
| spelling | doaj.art-9803153a69d0454d943671c26cbcc2e72022-12-21T23:01:48ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682020-10-011052050018-12050018-1010.1142/S2010135X2050018610.1142/S2010135X20500186Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysisAndrey Nasedkin0Mohamed Elsayed Nassar1Institute of Mathematics, Mechanics and Computer Science, Southern Federal University Miltchakova Street, 8a, Rostov on Don 344090, RussiaInstitute of Mathematics, Mechanics and Computer Science, Southern Federal University Miltchakova Street, 8a, Rostov on Don 344090, RussiaThis paper concerns the homogenization problems for porous piezocomposites with infinitely thin metalized pore surfaces. To determine the effective properties, we used the effective moduli method and the finite element approaches, realized in the ANSYS package. As a simple model of the representative volume, we applied a unit cell of porous piezoceramic material in the form of a cube with one spherical pore. We modeled metallization by introducing an additional layer of material with very large permittivity coefficients along the pore boundary. Then we simulated the nonuniform polarization field around the pore. For taking this effect into account, we previously solved the electrostatic problem for a porous dielectric material with the same geometric structure. From this problem, we obtained the polarization field in the porous piezomaterial; after that, we modified the material properties of the finite elements from dielectric to piezoelectric with element coordinate systems whose corresponding axes rotated along the polarization vectors. As a result, we obtained the porous unit cell of an inhomogeneously polarized piezoceramic matrix. From the solutions of these homogenization problems, we observed that the examined porous piezoceramics composite with metalized pore boundaries has more extensive effective transverse and shear piezomoduli, and effective dielectric constants compared to the conventional porous piezoceramics. The analysis also showed that the effect of the polarization field inhomogeneity is insignificant on the ordinary porous piezoceramics; however, it is more significant on the porous piezoceramics with metalized pore surfaces.http://www.worldscientific.com/doi/pdf/10.1142/S2010135X20500186piezoelectricityporous piezoceramicsmetalized microporenonuniform polarizationtransverse piezoelectric modulushomogenization problemeffective modulusfinite element method |
| spellingShingle | Andrey Nasedkin Mohamed Elsayed Nassar Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis Journal of Advanced Dielectrics piezoelectricity porous piezoceramics metalized micropore nonuniform polarization transverse piezoelectric modulus homogenization problem effective modulus finite element method |
| title | Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis |
| title_full | Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis |
| title_fullStr | Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis |
| title_full_unstemmed | Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis |
| title_short | Effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries: Finite element analysis |
| title_sort | effective properties of a porous inhomogeneously polarized by direction piezoceramic material with full metalized pore boundaries finite element analysis |
| topic | piezoelectricity porous piezoceramics metalized micropore nonuniform polarization transverse piezoelectric modulus homogenization problem effective modulus finite element method |
| url | http://www.worldscientific.com/doi/pdf/10.1142/S2010135X20500186 |
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