TY - JOUR AU - Bich, Dao Huy PY - 2009/03/18 Y2 - 2024/03/28 TI - Non-linear buckling analysis of functionally graded shallow spherical shells JF - Vietnam Journal of Mechanics JA - Vietnam J. Mech. VL - 31 IS - 1 SE - Research Article DO - 10.15625/0866-7136/31/1/5491 UR - https://vjs.ac.vn/index.php/vjmech/article/view/5491 SP - 17-30 AB - In the present paper the non-linear buckling analysis of functionally graded spherical shells subjected to external pressure is investigated. The material properties are graded in the thickness direction according to the power-law distribution in terms of volume fractions of the constituents of the material. In the formulation of governing equations geometric non-linearity in all strain-displacement relations of the shell is considered. Using Bubnov-Galerkin's method to solve the problem an approximated analytical expression of non-linear buckling loads of functionally graded spherical shells is obtained, that allows easily to investigate stability behaviors of the shell. ER -