Tên bài báo:
Nonlinear thermo-mechanical stability of eccentrically stiffened FGM sandwich doubly curved shallow shells with general Sigmoid law and Power law according to third order shear deformation shells theory- Tác giả:
- Đặng Thùy Đông
- Tham gia cùng:
- Tạp chí:
- Applied Mathematics and Mechanics
- Năm xuất bản:
- 2016
- Trang:
- Từ trang 191 đến trang 216
- Lĩnh vực:
- Kỹ thuật xây dựng công trình giao thông
- Phạm vi:
- Quốc tế
Tóm tắt:
Abstract In this paper, the nonlinear analyses of stability of FGM sandwich doubly curved shallow shells under thermo-mechanical loads with material properties obeying the general Sigmoid law and Power law of four material models are studied. Shells are reinforced by FGM stiffeners and resting on elastic foundations. Theoretical formulations are derived by using the third order shear deformation shells theory (TSDT) with von Karman- type nonlinearity taking into account initial geometrical imperfection and smeared stiffener technique. The explicit expressions for determining the critical buckling load, post-buckling mechanical and thermal load-deflection curves are obtained by Galerkin method. Two iterative algorithms are presented. The effects of stiffeners, thermal element, distribution law of material, initial imperfection, foundation, geometrical parameters on the buckling and post-buckling of shells are investigated
