Surface. cracks under peak stresses are investigated. The calculational procedure is based on the general form of the weight function for an elliptical crack embedded in an infinite solid. Two points on the contour of the ellipse are investigated. A new correction procedure for transfer from the emb
Weight functions and Stress Intensity Magnification factors for elliptical and semi-elliptical cracks under variable normal stress – part I
✍ Scribed by Dr.-Ing. L. Grueter; Dipl-Ing. W. Huget; Dipl.-Ing. H. Kylla
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 755 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0933-5137
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✦ Synopsis
Surface cracks under peak stresses are investigated. The calculational procedure is based on the general form of the weight function for an elliptical crack embedded in an infinite solid. Two points on the contour of the ellipse are investigated. The superposition method is used for transfer from the embedded crack to surface crack configurations. Weight functions for both points have been found with the crack aspect ratio a/c as parameter. For the point at the end of the minor axis all weight functions are describable by one equation only (Heuman's lambda function). For various ai'c ratios of the surface crack under different stress distributions the stress intensity magnification factors are given.
Gewichtsfunktionen und Spannungsintensit&vergrofierungsfaktoren fur elliptische und halbelliptische Fehler unter beliebiger Normalspannung -Teil I Oberflachenfehler unter Spitzenspannungen werden untersucht . Das Berechnungsverfahren basiert auf der allgemeinen Form der Gewichtsfunktion fur einen elliptischen Fehler in einem unendlichen Korper. Zwei Punkte auf der Ellipsenkontur werden untersuchi. Fur die Ubertragung der Ergebnisse vom eingebetteten auf den Oberflachenfehler wird das Superpositionsprinzip angewendet . Gewichtsfunktionen fir beide Punke mit dem Halbachsenverhaltnis ai'c als Parameter werden gefunden. Im Falle des Endpunktes der kleineren Achse sind alle Gewichtsfunktionen durch eine Gleichung beschreibbar (Lambda-Funktion von Heuman). Die Spannungsintensitatsvergroljerungsfaktoren fur verschiedene a/c-Werte des Oberflachenfehlers werden bei verschiedenen Spannungsverteilungen angegeben.
📜 SIMILAR VOLUMES
Asymptotic behaviour of weight functions has been analysed for mode I cracks in the shape of an ellipse or part of an ellipse. For internal points of a contour, a well known asymptotic solution is used for a semi-infinite crack with a straight front. An analytical description is suggested for weight
By means of the weight functions method stress intensity factors were calculated for axial semi-elliptical surface cracks in a pipe with cladding. The component is loaded by a thermoshock. Starting from a stress-free state the inner surface of the cladding is suddenly cooled down. The time-dependent