Probing the stability landscape of cylindrical shells for buckling knockdown factors.

ABSTRACT: The buckling response of axially compressed cylindrical shells is well known for its imperfection sensitivity. Mapping out a stability landscape by localized probing has recently been proposed as a rational means for establishing shell buckling knockdown factors. Probing using a point force directed radially inwards and perpendicular to the cylinder wall is based on the insight that a localized single dimple exists as an edge state in the basin boundary of the stable prebuckling equilibrium. Here, we extend the idea of probing to bi-directional inwards and outwards forces to trigger both single-dimple and double-dimple edge states. We identify key features of the ensuing probing stability landscape and generalize these to derive three design curves of varying conservatism that are a functi

SUBMITTER: Groh RMJ 

PROVIDER: S-EPMC9922549 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature