The dynamic instability of functionally graded material (FGM) sandwich plates under an arbitrary periodic load in a thermal environment is studied. The sandwich plate is made up of two layers of FGM face sheets and one layer of homogeneous metal core. The properties of a FGM layer vary continuously across the thickness according to a simple power law. A set of differential equations of Mathieu type is formed to determine the dynamic instability regions based on Bolotin's method. The dynamic stability of the FGM sandwich plates is sensitive to the temperature rise, volume fraction index, thickness ratio, and static and dynamic load factor.
關聯:
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES 卷: 24 期: 2 頁碼: 157-167
