Three-dimensional elastic-plastic finite element analysis of small surface cracks

Trantina, G. G.; deLorenzi, H. G.; Wilkening, W.W.

doi:10.1016/0013-7944(83)90067-x

Cited by 36 publications

(2 citation statements)

References 4 publications

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“…For certain restrictions on the crack geometry it has been shown that the energy release rate reduces to the 3D-form of the J-integral [41,42], and it has been used to perform three dimensional elastic-plastic finite element analysis [43]. Reference [44] contains a proposal for using a stiffness derivative technique to calculate efficiently the stress intensity rates and extrapolate K-results to different crack depths.…”

Section: Stress Intensity Factor Computationmentioning

confidence: 99%

Stress intensity factor solutions for a cracked bolt loaded by a nut

Toribio

1992

Int J Fract

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This paper presents the calculation of stress intensity factor (K) solutions for surface cracks in the thread ground of bolts subjected to axial loading directly applied by the nut. The stress-strain computations have been done by means of the finite element method with quarter-point singular isoparametric elements along the crack front. The stress intensity factor is calculated through the stiffness derivative method, by using a virtual crack extension technique to compute the energy release rate. Two modifications are made to improve the accuracy of the results: the displacement not only of the main node, but also of the quarter-point nodes located in the normal plane and the adjacent nodes in the crack line, avoiding both the change of the singularity and the crack curving. The results show that direct loading on the thread flank by a nut increases the stress intensity factor. This effect decreases with the crack length. For the deepest circular cracks, however, nut loading relaxes the K-value, mainly at the crack surface.

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Section: Stress Intensity Factor Computationmentioning

confidence: 99%

Stress intensity factor solutions for a cracked bolt loaded by a nut

Toribio

1992

Int J Fract

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“…( 137), wurden von Neumann et al [5] angegeben. Weitere numerische Ergebnisse für bestimmte Rißkonfigurationen bei einaxialer Belastung und unter Verwendung des Ramberg-Osgood-Gesetzes wurden von Trantina et al [110,111] veröffentlicht.…”

Section: Ausbildung Der Plastischen Zoneunclassified

Berechnung Der Bauteilanriblebensdauer Bei Mehrachsigen Proportionalen Beanspruchungen

Σαββαιδησ¹

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Experimentelle Untersuchungen zum Werkstoffverhalten bei proportionaler Beanspruchung 4.1 Werkstoffe 4.2 Probenform und -herstellung 4.3 Versuchstechnik 4.4 Versuche mit einstufigen Belastungen 4.4.1 Untersuchungsprogramm 4.4.2 Ergebnisse bèi Normalkraft 4.4.3 Ergebnisse bei Torsion 4.4.4 Ergebnisse bei zusammengesetzter Normalkraft und Torsion 4.4.5 Einheitliche Darstellung und Bewertung 4.5 Versuche mit Betriebsbelastungen 4.5.1 Mehrachsige Kerbsimulation für eine abgesetzte Welle unter proportionaler Belastung 4.5.2 Ergebnisse bei Normalkraft 61 4.5.3 Ergebnisse bei Torsion 63 4.5.4 Ergebnisse bei zusammengesetzter Normalkraft und Torsion 4.5.5 Einheitliche Darstellung und Bewertung 5 Konventionelle Konzepte zur Anrißlebensdauerberechnung 5.1 Lebensdauerberechnung mit konventionellen Schädigungsparametern .... 71

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Geometry factors

Broek¹

1989

The Practical Use of Fracture Mechanics

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Three-dimensional elastic-plastic finite element analysis of small surface cracks

Cited by 36 publications

References 4 publications

Stress intensity factor solutions for a cracked bolt loaded by a nut

Stress intensity factor solutions for a cracked bolt loaded by a nut

Berechnung Der Bauteilanriblebensdauer Bei Mehrachsigen Proportionalen Beanspruchungen

Geometry factors

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