Advanced performance assessment methods for high-strength bolts in ring-flange connections

Publikation: Beitrag in Fachzeitschrift › Artikel › Transfer › Peer-Review

Autorschaft

  • Peter Schaumann
  • Rasmus Eichstädt
  • Andre Stang

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Details

Titel in ÜbersetzungFortschrittliche Bewertungsmethoden für hochfeste Schrauben in Ringflanschverbindungen
OriginalspracheEnglisch
Seiten (von - bis)446-455
Seitenumfang10
FachzeitschriftStahlbau
Jahrgang87
Ausgabenummer5
PublikationsstatusVeröffentlicht - 7 Mai 2018

Abstract

HV-Schraubengarnituren mit sehr großen Durchmessern in Ringflanschen von Windenergieanlagen sind hohen statischen und zyklischen Lasten mit sehr hohen Lastwechselzahlen ausgesetzt. Ihre Trag- und Ermüdungsfestigkeit sind entscheidend für die strukturelle Integrität der Tragstrukturen. Neben experimentellen Untersuchungen der HV-Garnituren bieten analytische und numerische Bewertungsmethoden die Möglichkeit das strukturelle Verhalten im Detail zu bewerten und die Entwicklung von geeigneten Bemessungsverfahren und Designlösungen zu unterstützen. In diesem Beitrag wird, basierend auf der Monte-Carlo-Simulation, eine probabilistische Bewertung der Ermüdungsfestigkeit von HV-Schraubengarnituren in Ringflanschen durchgeführt. Dabei wird die Versagenswahrscheinlichkeit berechnet und der Einfluss der streuenden Parameter auf die Zuverlässigkeit untersucht. Anschließend wird ein analytisches Verfahren zu Berechnung der Ermüdung von Schrauben mit großen Abmessungen basierend auf dem Kerbdehnungskonzept vorgestellt. Die Ergebnisse von zwei unterschiedlichen Methoden zur Bestimmung der zyklischen Grundwerkstoffeigenschaften werden verglichen. Die Berechnungen werden anhand von Ermüdungsversuchen an HV-Schraubengarnituren validiert und hinsichtlich der Bewertung des lokalen Beanspruchungszustands, des Schädigung-Parameters und der Sensitivität gegenüber Werkstoffeingangsparametern diskutiert und erläutert.

ASJC Scopus Sachgebiete

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Advanced performance assessment methods for high-strength bolts in ring-flange connections. / Schaumann, Peter; Eichstädt, Rasmus; Stang, Andre.
in: Stahlbau, Jahrgang 87, Nr. 5, 07.05.2018, S. 446-455.

Publikation: Beitrag in Fachzeitschrift › Artikel › Transfer › Peer-Review

Schaumann P, Eichstädt R, Stang A. Advanced performance assessment methods for high-strength bolts in ring-flange connections. Stahlbau. 2018 Mai 7;87(5):446-455. doi: 10.1002/stab.201810601
Schaumann, Peter ; Eichstädt, Rasmus ; Stang, Andre. / Advanced performance assessment methods for high-strength bolts in ring-flange connections. in: Stahlbau. 2018 ; Jahrgang 87, Nr. 5. S. 446-455.
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abstract = "Large-size HV-bolt sets in ring-flange connections are crucial structural members of wind turbine support structures, which are subjected to strong static as well as cyclic loads with considerable numbers of load cycles. Additionally to direct experimental investigations on the structural components themselves, analytical and numerical assessment methods of the bolts performance inside ring-flanges are valuable engineering tools to gain knowledge about the structural behaviour and to support the development of appropriate design solutions. In this paper, probabilistic fatigue assessment, using Monte Carlo Simulation technique, is utilized to compute the failure probability and to investigate the influence of the scattering parameters on the fatigue performance of HV-bolt sets in ring-flange connections. Subsequently, an analytical fatigue calculation approach for large-size bolts, based on the local strain-life concept, is introduced. Results from two different methods for determination of required base material properties are compared. The calculations are validated on fatigue tests on HV-bolt sets and results are discussed with regard to the evaluation of local loading conditions, damage assessment parameters and sensitivity to base material input.",
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AU - Eichstädt, Rasmus

AU - Stang, Andre

N1 - Publisher Copyright: Copyright © 2018 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018/5/7

Y1 - 2018/5/7

N2 - Large-size HV-bolt sets in ring-flange connections are crucial structural members of wind turbine support structures, which are subjected to strong static as well as cyclic loads with considerable numbers of load cycles. Additionally to direct experimental investigations on the structural components themselves, analytical and numerical assessment methods of the bolts performance inside ring-flanges are valuable engineering tools to gain knowledge about the structural behaviour and to support the development of appropriate design solutions. In this paper, probabilistic fatigue assessment, using Monte Carlo Simulation technique, is utilized to compute the failure probability and to investigate the influence of the scattering parameters on the fatigue performance of HV-bolt sets in ring-flange connections. Subsequently, an analytical fatigue calculation approach for large-size bolts, based on the local strain-life concept, is introduced. Results from two different methods for determination of required base material properties are compared. The calculations are validated on fatigue tests on HV-bolt sets and results are discussed with regard to the evaluation of local loading conditions, damage assessment parameters and sensitivity to base material input.

AB - Large-size HV-bolt sets in ring-flange connections are crucial structural members of wind turbine support structures, which are subjected to strong static as well as cyclic loads with considerable numbers of load cycles. Additionally to direct experimental investigations on the structural components themselves, analytical and numerical assessment methods of the bolts performance inside ring-flanges are valuable engineering tools to gain knowledge about the structural behaviour and to support the development of appropriate design solutions. In this paper, probabilistic fatigue assessment, using Monte Carlo Simulation technique, is utilized to compute the failure probability and to investigate the influence of the scattering parameters on the fatigue performance of HV-bolt sets in ring-flange connections. Subsequently, an analytical fatigue calculation approach for large-size bolts, based on the local strain-life concept, is introduced. Results from two different methods for determination of required base material properties are compared. The calculations are validated on fatigue tests on HV-bolt sets and results are discussed with regard to the evaluation of local loading conditions, damage assessment parameters and sensitivity to base material input.

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