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Fracture Mechanics of cracks originating from holes treated for notch stress relieving

โœ Scribed by Dr. C. Mattheck; Mrs. S. Burkhardt


Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
533 KB
Volume
18
Category
Article
ISSN
0933-5137

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โœฆ Synopsis


A tensile plate with a circular hole is investigated. The notch stresses are calculated, for an optimum notch arrangement as well as cold expansion of the notch. The stress-intensity factor is calculated for a crack originating at a single circular hole surrounded by two axially arranged circular stress-relieving notches. Furthermore, the influence of cold expansion of the main notch, which is to be relieved, and of the combination of cold expansion and stress-relieving notches on the stress intensity factor is investigated. The weight-function is given for all the cases above. It has been computed with good approximation by a Finite-Element-Method.

Beschreibung von Rissen, die von Kreislbchern mit redurierter Kerbspannung auslaufen

Eine Platte mit mittigem Kreisloch, die auf Zug belastet wird, soll untersucht werden. Die Kerbspannungen werden fur eine optimale Anordnung der Entlastungskerben relativ zur Hauptkerbe sowie nach Kaltaufweitung der Hauptkerbe berechnet . Der Spannungsintensitatsfaktor wird fur einen RiR ausgehend von einem einzelnen Kreisloch umgeben von 2 kreisrunden Entlastungskerben, die in axialer Richtung angebracht sind, berechnet. Nmm-2.


๐Ÿ“œ SIMILAR VOLUMES


Post yield solutions for fracture mechan
โœ G.G. Chell; V. Vitek ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 599 KB

## Abetnet-Two methods are used to obtain post yield solutions for symmetric cracks emanating from elliptic holes. In the first a dislocation model is used to simulate the cracks and plastic zones. This method is exact within the numerical accuracies of the computations. In the second approximate