The objective of present paper is to study the effect of aspect ratio, thermal gradient and non-homogeneity on vibration of non- homogeneous orthotropic trapezoidal plate with thickness varies parabolically in both directions. By using Rayleigh-Ritz method governing differential equations has been attained by taking two term deflection function corresponding to clamped-simply supported clamped-simply supported (C-S-C-S) boundary conditions. The effects of structural parameters such as aspect ratio, thermal gradient and non-homogeneity have also been studied. Results are calculated with great accuracy and compare the present model with the other in literature with the help of tables and graphs.
Sharma et al. (Mon,) studied this question.