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Numerical and experimental analyses of damage behaviour of steel moment connection

  • Plastic design allows the exploitation of the full resistance of steel structures by taking advantage of stress–redistributions due to plastic strains exceeding the yield strain. Especially in seismic design the utilization of material reserves and the formation of plastic hinges play an important role. In devastating earthquakes in Northridge (USA) and Kobe (Japan) brittle fracture of welded connections in steel moment frames occurred prior to formation of plastic hinges and utilization of plastic material reserves. The subsequent research works resulted in improved design rules and recommendations for these kinds of failure. But to guarantee sufficient ductile performance of these connections also in the upper shelf region, plastic and earthquake resistant design rules should take into account degradation of strain capacity and toughness properties due to quasi static and especially seismic loading. In the scope of the current European project “Plastotough”, the main objective is to derive quantified toughness design rules in the upper shelf based on the strain requirements opposed to strain capacities. This paper gives an overview over the research work in performance and shows recent results from experimental and numerical analyses performed within this project for monotonic and cyclic loading.

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Metadaten
Author:Wolfgang Peter Bleck, Winfried Dahl, Aida NonnORCiDGND, Lars Amlung, Markus Feldmann, Dirk Schäfer, Björn Eichler
DOI:https://doi.org/10.1016/j.engfracmech.2009.03.004
Parent Title (English):Engineering Fracture Mechanics
Document Type:Article
Language:English
Year of first Publication:2009
Release Date:2021/03/19
Tag:Beam column connections; LPD model; Seismic loading
Volume:76
Issue:10
First Page:1531
Last Page:1547
Konferenzangabe:MatMod2007, Material Models – from Nano to Macro, International Workshop, Hamburg, Germany
Institutes:Fakultät Maschinenbau
Technologie-Campus Neustadt an der Donau
Fakultät Maschinenbau / Computational Mechanics and Materials Lab (CMM)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Produktion und Systeme