AXISYMMETRICAL CREEP BUCKLING OF CLAMPED SHALLOW SPHERICAL SHELLS
STANFORD UNIV CA DIV OF ENGINEERING MECHANICS
Pagination or Media Count:
In this paper consider the effect of viscoelastic properties of shells on the axisymmetrical buckling is considered. For viscoelastic shells under constant uniform pressure, the average vertical deflection increases with time. When time reaches a critical value t sub cr, the rate of increase of the average vertical deflection becomes very high, which indicates the initiation of snapping of the shell at this instant. After snapping, the shell continues to deform. The object is to find the critical time t sub cr for different pressures and for shells with different geometrical parameters. The pressure on shells is considered to be applied either by pressurized air in a chamber of large volume or by an incompressible fluid. For the latter loading condition, the average deflection remains constant and the applied pressure relaxes. In this paper, the relaxation of external pressure of this type is analyzed, as well as prescribed pressure increases.
- Theoretical Mathematics