The behavior of statically-indeterminate structural members and frames with cracks present

Crack stability is discussed as affected by their presence in statically-indeterminate beams, frames, rings, etc. loaded into the plastic range. The stability of a crack in a section, which has become plastic, is analyzed with the remainder of the structure elastic and with subsequent additional pla...

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Bibliographic Details
Published in:Engineering fracture mechanics 2009-08, Vol.76 (12), p.1920-1929
Main Authors: Paris, Paul C., Palin-Luc, Thierry
Format: Article
Language:English
Subjects:
Crack stability
Elastic plastic crack growth
Energy dissipation
Exact sciences and technology
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Inelasticity (thermoplasticity, viscoplasticity...)
J-integral
Physics
Plastic hinge
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
Tearing stability analysis
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Summary:Crack stability is discussed as affected by their presence in statically-indeterminate beams, frames, rings, etc. loaded into the plastic range. The stability of a crack in a section, which has become plastic, is analyzed with the remainder of the structure elastic and with subsequent additional plastic hinges occurring. The reduction of energy absorption characteristics for large deformations is also discussed. The methods of elastic–plastic tearing instability are incorporated to show that in many cases the fully plastic collapse mechanism must occur for complete failure.
ISSN:0013-7944
1873-7315
DOI:10.1016/j.engfracmech.2009.05.001