On the collapse of circular confined rings under external pressure

The paper presents a study of the large deflection collapse of circular rings confined in a rigid cavity under external pressure. The ring is assumed to be inextensional and to have an initial localized imperfection which causes a small section of its circumference to be detached from the confining...

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Bibliographic Details
Published in:International journal of solids and structures 1984, Vol.20 (7), p.699-713
Main Authors: Kyriakides, S., Youn, S.-K.
Format: Article
Language:English
Subjects:
Buckling
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
loading
Physics
pressure
Solid mechanics
Structural and continuum mechanics
structural parts
yield point
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Summary:The paper presents a study of the large deflection collapse of circular rings confined in a rigid cavity under external pressure. The ring is assumed to be inextensional and to have an initial localized imperfection which causes a small section of its circumference to be detached from the confining wall. The cavity formed is pressurized and its growth examined. The formulation is general enough to allow for large deflections of the ring as well as material nonlinearities. The pressure v's change in volume response of the confined ring is found to be characterized by a limit load for both elastic and inelastic material behavior. The limit load is shown to be dependent on both the geometry of the initial imperfection as well as the yield and post yield characteristics of the ring material. The response beyond the limit load is unstable until the crown of the ring touches the opposite side after which it becomes stable again.
ISSN:0020-7683
1879-2146
DOI:10.1016/0020-7683(84)90025-8