%0 Journal Article %T Free-damped vibration tangential wave responses of FG-sandwich merged hemispherical-cylindrical shells under effects of artificial springs at merging and boundary conditions %A Sobhani, Emad %A Masoodi, Amirreza %A Omer Civalek %A Ahmadi Pari, Amir Reza %J Engineering Structures %@ 0141-0296 %D 2023