“…Therefore, studies on the effects of elastic foundations on behaviour and loading capacity of the shells are very important. The non-linear buckling of the truncated conical shells made from FGMs surrounded by an elastic medium and Winkler-Pasternak type elastic foundations was presented in [10,11]. Other studies about vibration of FGM conical shell panels, such as investigation offree vibration of FGM conical shell panels, have been investigated by Akbari et al in [12] and Zhao et al in [13].…”