Reliability-Based Calibration of Partial Safety Factors for Wind Turbine Blades

Henrik Stensgaard Toft; Kim Branner; John Dalsgaard Sørensen; Peter Berring

Reliability-Based Calibration of Partial Safety Factors for Wind Turbine Blades

Henrik Stensgaard Toft, Kim Branner, John Dalsgaard Sørensen, Peter Berring

Research output: Contribution to book/anthology/report/conference proceeding › Conference abstract in proceeding › Research › peer-review

Abstract

The reliability of a wind turbine blade can be estimated using a response surface technique, the First Order Reliability Method (FORM) and Monte Carlo simulation. The response surface is here estimated based on nonlinear finite element analysis by which nonlinear failure modes due to e.g. buckling can be taken into account. Stochastic models for the material properties and the load-effect are formulated in order to take physical, model and statistical uncertainties into account. The blade fails due to buckling of the main spar cap which results in high stresses in the transverse direction of the unidirectional laminas. For this failure mode the reliability is estimated along the centreline of the main spar cap. The results show significant variations in the reliability along the blade length.

Original language	English
Title of host publication	EWEA 2011 Brussels : Europe's Premier Wind Energy Event : scientific proceedings
Number of pages	4
Publisher	The European Wind Energy Association
Publication date	2011
Publication status	Published - 2011
Event	EAWA 2011 Brussels : EWEA annual event - Brussels, Belgium Duration: 14 Mar 2011 → 17 Mar 2011

Conference

Conference	EAWA 2011 Brussels : EWEA annual event
Country/Territory	Belgium
City	Brussels
Period	14/03/2011 → 17/03/2011

Keywords

Stochastic Models
Partial Safety Factors
Composite Materials
Wind Turbine Blades

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EAWA 2011 Brussels : EWEA annual event
Toft, H. S. (Speaker)
16 Mar 2011
Activity: Talks and presentations › Talks and presentations in private or public companies

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title = "Reliability-Based Calibration of Partial Safety Factors for Wind Turbine Blades",

abstract = "The reliability of a wind turbine blade can be estimated using a response surface technique, the First Order Reliability Method (FORM) and Monte Carlo simulation. The response surface is here estimated based on nonlinear finite element analysis by which nonlinear failure modes due to e.g. buckling can be taken into account. Stochastic models for the material properties and the load-effect are formulated in order to take physical, model and statistical uncertainties into account. The blade fails due to buckling of the main spar cap which results in high stresses in the transverse direction of the unidirectional laminas. For this failure mode the reliability is estimated along the centreline of the main spar cap. The results show significant variations in the reliability along the blade length.",

keywords = "Stochastic Models, Partial Safety Factors, Composite Materials, Wind Turbine Blades, Stochastic Models, Partial Safety Factors, Composite Materials, Wind Turbine Blades",

author = "Toft, {Henrik Stensgaard} and Kim Branner and S{\o}rensen, {John Dalsgaard} and Peter Berring",

note = "Elektronisk opf{\o}rt abstract, f{\o}r udgivelse af publikation.; EAWA 2011 Brussels : EWEA annual event ; Conference date: 14-03-2011 Through 17-03-2011",

year = "2011",

language = "English",

booktitle = "EWEA 2011 Brussels : Europe's Premier Wind Energy Event",

publisher = "The European Wind Energy Association",

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Reliability-Based Calibration of Partial Safety Factors for Wind Turbine Blades. / Toft, Henrik Stensgaard; Branner, Kim; Sørensen, John Dalsgaard et al.
EWEA 2011 Brussels : Europe's Premier Wind Energy Event: scientific proceedings. The European Wind Energy Association, 2011.

Research output: Contribution to book/anthology/report/conference proceeding › Conference abstract in proceeding › Research › peer-review

TY - ABST

T1 - Reliability-Based Calibration of Partial Safety Factors for Wind Turbine Blades

AU - Toft, Henrik Stensgaard

AU - Branner, Kim

AU - Sørensen, John Dalsgaard

AU - Berring, Peter

N1 - Elektronisk opført abstract, før udgivelse af publikation.

PY - 2011

Y1 - 2011

N2 - The reliability of a wind turbine blade can be estimated using a response surface technique, the First Order Reliability Method (FORM) and Monte Carlo simulation. The response surface is here estimated based on nonlinear finite element analysis by which nonlinear failure modes due to e.g. buckling can be taken into account. Stochastic models for the material properties and the load-effect are formulated in order to take physical, model and statistical uncertainties into account. The blade fails due to buckling of the main spar cap which results in high stresses in the transverse direction of the unidirectional laminas. For this failure mode the reliability is estimated along the centreline of the main spar cap. The results show significant variations in the reliability along the blade length.

AB - The reliability of a wind turbine blade can be estimated using a response surface technique, the First Order Reliability Method (FORM) and Monte Carlo simulation. The response surface is here estimated based on nonlinear finite element analysis by which nonlinear failure modes due to e.g. buckling can be taken into account. Stochastic models for the material properties and the load-effect are formulated in order to take physical, model and statistical uncertainties into account. The blade fails due to buckling of the main spar cap which results in high stresses in the transverse direction of the unidirectional laminas. For this failure mode the reliability is estimated along the centreline of the main spar cap. The results show significant variations in the reliability along the blade length.

KW - Stochastic Models

KW - Partial Safety Factors

KW - Composite Materials

KW - Wind Turbine Blades

KW - Stochastic Models

KW - Partial Safety Factors

KW - Composite Materials

KW - Wind Turbine Blades

M3 - Conference abstract in proceeding

BT - EWEA 2011 Brussels : Europe's Premier Wind Energy Event

PB - The European Wind Energy Association

T2 - EAWA 2011 Brussels : EWEA annual event

Y2 - 14 March 2011 through 17 March 2011

ER -

Reliability-Based Calibration of Partial Safety Factors for Wind Turbine Blades

Abstract

Conference

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EAWA 2011 Brussels : EWEA annual event

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