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Erschienen in:
2014 | OriginalPaper | Buchkapitel
A Method to Determine the Plastic Bending Angle of Dowel-Type Fasteners
verfasst von : Michael Steilner, Hans Joachim Blaß
Erschienen in: Materials and Joints in Timber Structures
Verlag: Springer Netherlands
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In timber joints with dowel-type fasteners, the yield moment of the fastener is an important parameter. For fasteners of hardened steel, e.g. self-tapping screws, the yield moment cannot be calculated and has to be measured in a bending test as established in EN 409. The yield moment is defined at a plastic bending angle of
α
= 45°/
d
0.7
. Therefore, the determination of the plastic bending angle is important to derive the characteristic yield moment of fasteners. For a proper derivation of the fastener’s yield moment, the onset of plastic deformations must hence be identified in order to be able to determine the correct plastic bending angle. A new method for the determination of the plastic bending angle was developed which is independent of a ductile or brittle behaviour of the fastener. The method is generally applicable to different fastener types with various diameters.