The behavior of statically-indeterminate structural members and frames with cracks present |
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Authors: | Paul C Paris Thierry Palin-Luc |
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Affiliation: | Arts et Metiers ParisTech, Universite Bordeaux 1, LAMEFIP, Esplanade des Arts et Métiers, F-33405 Talence Cedex, France |
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Abstract: | 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. |
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Keywords: | J-integral Plastic hinge Tearing stability analysis Crack stability Elastic plastic crack growth Energy dissipation |
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