Stability of shallow shells with local changes in strength characteristics

The authors deal with the structures of buildings in form shallow shells some damage. derivation equations is given taking into account geometric nonlinearity work a thin-walled structure. A technique for solving systems using Bubnov - Galyorkin method given. structure various ways fixing edges simulated. Damage specified by changing modulus elasticity an arbitrary section influence shape and location defect on value critical load investigated. results studies carried out are dimensionless illustrated graphs, which makes it convenient to use them engineering calculations. Recommendations correcting thickness coating order maintain their bearing capacity event defects. proposed can be used determine investigate stress-strain state shells, presence defects them. constructed graphs dependence parameters make possible evaluate operation structures, changes factors at stages structure's operation. varying characteristics reduction elasticity, appears because occurrence defect, shows that close real conditions.