Investigation of dynamic performance in porous power-law and sigmoid functionally graded sandwich plates
Advances in Materials Research (South Korea), cilt.15, sa.3, ss.225-247, 2026 (ESCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 15 Sayı: 3
- Basım Tarihi: 2026
- Doi Numarası: 10.12989/amr.2026.15.3.02
- Dergi Adı: Advances in Materials Research (South Korea)
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
- Sayfa Sayıları: ss.225-247
- Anahtar Kelimeler: dynamic behavior, functionally graded materials, Navier’s method, porosity, refined plate theory
- Süleyman Demirel Üniversitesi Adresli: Hayır
Özet
In the present study, dynamic bihavior analysis of sandwich plate has been performed by employing refined shear deformation plate theory. Novel imperfections types are studied which may arise during fabrication and are named as even porosity, uneven porosity, logarithmic-uneven porosities, linear-uneven porosities. The material gradation along the direction of thickness is taken as per power law (P-FGM) and sigmoid law (S-FGM). The face layers are modeled as functionally graded (FG) across their thickness, while the core consists of a homogeneous ceramic layer. The governing equations are formulated using Hamilton's principle, and a closed-form solution for a simply supported rectangular plate is derived through the Navier method. Extensive parametric study to investigate the natural frequency have been performed for different side to thickness ratio (a/h), aspect ratio (a/b) and porosity parameters (ζ). The accuracy of the proposed theory is verified by comparing selected results with data from existing literature.