Gewalt und Männlichkeit bei inhaftierten Jugendlichen

Neuber, Anke

doi:10.2307/j.ctvndv9jf.13

Cited by 14 publications

(9 citation statements)

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“…A numerical assessment of these notches with the local stress approach is done via fictitious rounding with a reference radius. The fictive notch radius r f = 1 mm was derived for welded joints connecting thick plates, based on the micro support according to Neuber in a “worst case” consideration (the real radius approaches zero and the notch opening angle is ω = 0°) . Due to the fictive enlargement of the real radius, the “support effects” appearing in the sharp notches can be taken into account in a fatigue strength analysis.…”

Section: Fatigue Assessment Conceptmentioning

confidence: 99%

Crack initiation and propagation analysis at welds – assessing the total fatigue life of complex structures

Baumgartner

Waterkotte

2015

Materialwissenschaft Werkst

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The fatigue strength of complex welded structures may differ highly from that of a simple test specimen. The reason for this observation is in most cases the high amount of crack propagation on the total fatigue life. The aim of this work is to describe the complex failure mechanism with a two-phase model. In this model, the crack initiation and crack propagation phase are assessed separately. The fatigue life until initiation of a crack is derived by notch stresses, calculated using stress averaging or the critical distance approach. The macro crack propagation is determined by fracture mechanics. The methods, which are available to determine the fatigue life until crack initiation, lead to reliable results. The determination of stress intensity factors proved to be demanding. Variations were observed depending on the calculation approach used. For application in industry, the applied approaches should be improved further.Keywords: Weld start and stop position / crack initiation / crack propagation Das Schwingfestigkeitsverhalten von komplexen Bauteilen unterscheidet sich in vielen Fällen stark von dem einfacher Proben. Diese meist im Abgleich zwischen Berechnung und experimenteller Prüfung gemachte Beobachtung kann häufig über den hohen Anteil des Rissfortschritts an der Gesamtlebensdauer erklärt werden. Ziel dieses Beitrags ist es, das komplexe Schwingfestigkeitsverhalten über ein zwei-Phasen Modell zu beschreiben, in dem die Anriss-und die Rissfortschrittsphase separat betrachtet werden. Die Anrissschwingspielzahl wird hierbei über den Spannungsmittelungs-und Spannungsabstandsansatz berechnet, die anschließende Rissfortschrittsphase über bruchmechanische Methoden. In einer Gegenüberstellung von experimentell ermittelter und berechneter Lebensdauer zeigte sich eine gute Übereinstimmung für das Versagenskriterium technischer Anriss. Bei der bruchmechanischen Bewertung erwies sich die Berechnung der Spannungsintensitätsfaktoren als nicht trivial. Für die industrielle Anwendbarkeit empfiehlt sich daher eine Erweiterung und Optimierung der zur Verfügung stehenden numerischen Werkzeuge. Mat.-wiss. u. Werkstofftech. 2015, 46, No. 2 Crack initiation and propagation analysis at welds

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Section: Fatigue Assessment Conceptmentioning

confidence: 99%

Crack initiation and propagation analysis at welds – assessing the total fatigue life of complex structures

Baumgartner

Waterkotte

2015

Materialwissenschaft Werkst

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“…Sutterlüty (2004, p.105) questions this assumption and emphasises that violent actions often occur under uncertain and imponderable circumstances. In a conflict one cannot predict in advance what choices will be taken and what the consequences may be (Neuber 2008). Bourdieu's understanding of action as habitual implies that violence is not only rational and intentional, but also has unconscious aspects (see, also, Gadd 2000, 2003).…”

Section: Bourdieu's Concept Of Social Space and Habitusmentioning

confidence: 99%

“…This perspective on violence enables one to look at relationships between institutional structures and subjective ways of acquisition; between the influence of symbolic order or cultural constructions and psychic resources of coping. If the conflicting moment of this relationship is focused, the meaning of violence changes and an approach to a deeper understanding of violence in prison will be revealed (Bereswill 2002a(Bereswill , 2003a(Bereswill , 2003b(Bereswill , 2006Crewe 2009;Crewe and Maruna 2006;Maruna 2001;Neuber 2008Neuber , 2009). To show the range of each theoretical approach they will be related to a case example.…”

Section: A Conflict-oriented Model Of Biographymentioning

confidence: 99%

Understanding Violence in the ‘Society of Captives’: Sykes Meets Bourdieu in Prison

Neuber

2010

The Howard Journal of Criminal Justice

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Looking at violence in prison from a sociological perspective, Sykes's Society of Captives remains a classic in penology. Influenced by structural-functionalism, he describes the great influence of the prison structure on its inmates and emphasises the importance of violence for the stabilisation of the prison social order. This article will re-examine Sykes's assumptions about the relationship between structure and action, referring to Bourdieu and a biographical approach using a case example from a qualitative longitudinal study with male inmates in young offenders' institutions in Germany. It concludes by asking how the meaning of violence in prison changes, looked at from these different theoretical perspectives.

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“…In particular, if the case of notched components made of brittle materials is considered, criteria based on the evaluation of the local maximum value of a stress scalar fail, owing to the presence of infinite values of the stress field components. As argued by Neuber [1], effective static fracture criteria can be introduced by assuming that crack initiation is governed by volume, or surface, averages of the local stress scalar field, which is most representative of the expected failure mode. For instance, Seweryn [2] proposed a criterion based on the evaluation on the maximum value of the stress scalar, which is obtained by averaging the stress component normal to the crack direction along the crack path.…”

Section: Introductionmentioning

confidence: 99%

A brittle fracture criterion for PMMA V-notches tensile specimens based on a length-enriched eXtended Finite Element approach

Benvenuti¹,

Tovo²,

Livieri³

2011

Frattura Ed Integrità Strutturale

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A criterion for the prediction of the static failure loads in tensile PMMA specimens with sharp notches is presented. The proposed criterion is based on a regularized version of the eXtended Finite Element Method (XFEM), which has been previously applied to concrete-like materials. The main feature of the proposed approach is that the cracking process is not treated as a local process, but it is modeled by assuming that macro-cracks stem from the interaction of micro-cracks within a finite width process zone. The case of a brittle materials with thin process zone is tackled by assuming one layer of enriched finite elements. Preliminary results concerning PMMA specimens subjected to mode-one loading are presented.

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Gewalt und Männlichkeit bei inhaftierten Jugendlichen

Cited by 14 publications

References 0 publications

Crack initiation and propagation analysis at welds – assessing the total fatigue life of complex structures

Crack initiation and propagation analysis at welds – assessing the total fatigue life of complex structures

Understanding Violence in the ‘Society of Captives’: Sykes Meets Bourdieu in Prison

A brittle fracture criterion for PMMA V-notches tensile specimens based on a length-enriched eXtended Finite Element approach

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