ABSTRACT This paper investigated the stability characteristics of a geometrically imperfect three‐phase composite plate. The structure, comprising a three‐phase composite core layer and two piezoelectric actuator layers, is placed on an elastic substrate and is exposed to multiple types of loading, including mechanical and thermal loads effects. The formulation is formulated utilizing Reddy's higher‐order shear deformation plate theory, incorporating the von Kármán–Donnell type of geometric nonlinearity. The Galerkin procedure is subsequently applied to derive the governing equations. The present work is a comprehensive parametric evaluation of factors affecting the plate's stability such as the volume fractions of fibers and particles, geometric characteristics, initial imperfections, and temperature rise. The computational findings highlight the pronounced impact of these factors on the composite plate post‐buckling behavior under thermal loading.
Dat et al. (Wed,) studied this question.