Comments on: “Dynamic response of functionally graded plates resting on two-parameter-based elastic foundation model using a quasi-3D theory” [Mechanics Based Design of Structures and Machines 2019;47(4):399–429

Abstract

This comment paper aims to show that the paper contains a serious error. In the commented paper, the displacements are incorrect—two of the shape functions they are based on are erroneous, and they do not properly account for the same degree. The correct forms of all shape functions are explained more deeply here.