Title

Propagation of 2D Fatigue Cracks under Complex Loading

Propagation of 2D Fatigue Cracks under Complex Loading

Authorship

MEGGIOLARO, MARCO ANTONIO; CASTRO, JALME TUPLASSÚ PINHO DE

MEGGIOLARO, MARCO ANTONIO

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CASTRO, JALME TUPLASSÚ PINHO DE

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DOI

10.5151/2594-5327-C01252

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Abstract

The modeling of mode I fatigue propagation under complex loading of 2D cracks, which grow in two dimensions changing shape at each cycle, is discussed in this paper. Sequence effects, such as overload-induced crack retardation or arrest are also considered, based on the crack closure idea. A description and a taxonomy of these load interaction models are presented in a companion paper. The numerical implementation of these models is discussed, in particular their application to the ViDa software, developed to automate the fatigue dimensioning process under complex loading by all the traditional methods used in mechanical design.

The modeling of mode I fatigue propagation under complex loading of 2D cracks, which grow in two dimensions changing shape at each cycle, is discussed in this paper. Sequence effects, such as overload-induced crack retardation or arrest are also considered, based on the crack closure idea. A description and a taxonomy of these load interaction models are presented in a companion paper. The numerical implementation of these models is discussed, in particular their application to the ViDa software, developed to automate the fatigue dimensioning process under complex loading by all the traditional methods used in mechanical design.

Keywords

fatigue, crack propagation, sequence effects, complex loading, ViDa software

fatigue, crack propagation, sequence effects, complex loading, ViDa software