Numerical–Experimental Study of the Combined Influence of Hole- and Dent-Type Stress Concentrators on the Mechanical Properties of Structurally Similar Samples

The mutual influence of stress concentrators in the form of a dent (made by a hemispherical indenter 25 mm in diameter to a depth of the sheet thickness) and a hole 4 mm in diameter in a thin 1.5- or 3.0-mm-thick skin on the static strength and fatigue life of structurally similar samples made of a...

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Bibliographic Details
Published in:	Russian metallurgy Metally Vol. 2023; no. 1; pp. 25 - 30
Main Authors:	Grinevich, D. V., Mitrofanov, O. V., Yakovlev, N. O., Gulina, I. V., Knyazev, L. A., Monakhov, A. D.
Format:	Journal Article
Language:	English
Published:	Moscow Pleiades Publishing 2023 Springer Nature B.V
Subjects:	Aluminum base alloys Chemistry and Materials Science Concentrators Diameters Fatigue life Materials Science Mechanical properties Metallic Materials damage dent fatigue strength dent + hole aluminum alloy
Online Access:	Get full text
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Summary:	The mutual influence of stress concentrators in the form of a dent (made by a hemispherical indenter 25 mm in diameter to a depth of the sheet thickness) and a hole 4 mm in diameter in a thin 1.5- or 3.0-mm-thick skin on the static strength and fatigue life of structurally similar samples made of a 1163AT aluminum alloy is studied. The presence of a dent does not decrease the static strength, while the strength decreases by ~8% regardless of the location of a hole with respect to a dent for combined dent + hole stress concentrators. The position of a hole relative to the center of a dent weakly affects the slope of a fatigue curve, whereas the displacement of a hole from the center to the edge of the dent leads to a decrease in the fatigue life.
ISSN:	0036-0295 1555-6255 1531-8648
DOI:	10.1134/S0036029523010056