Blar i Institutt for bygg- og miljøteknikk på forfatter "Page, Ana M."
-
A macro-element for integrated time domain analyses representing bucket foundations for offshore wind turbines
Skau, Kristoffer Skjolden; Grimstad, Gustav; Page, Ana M.; Eiksund, Gudmund Reidar; Jostad, Hans Petter (Journal article; Peer reviewed, 2018)The paper presents a macro-element model for bucket foundations to be used in integrated time domain analyses of offshore wind turbines. The macro-element has been formulated in the multi-surface plasticity framework, and ... -
A macro-element model for multidirectional cyclic lateral loading of monopiles in clay
Page, Ana M.; Grimstad, Gustav; Eiksund, Gudmund Reidar; Jostad, Hans Petter (Journal article; Peer reviewed, 2018)This paper investigates numerically the impact of multidirectional cyclic loads on the response of a monopile in clay supporting an offshore wind turbine (OWT). The results indicate that multidirectional loading modifies ... -
A macro-element pile foundation model for integrated analyses of monopilebased offshore wind turbines
Page, Ana M.; Grimstad, Gustav; Eiksund, Gudmund Reidar; Jostad, Hans Petter (Journal article; Peer reviewed, 2018)The design of OWTs relies on integrated load analyses tools that simulate the response of the entire OWT (including the rotor-nacelle assembly, support structure and foundation) under combined aerodynamic and hydrodynamic ... -
A New Foundation Model for Integrated Analyses of Monopile-based Offshore Wind Turbines
Page, Ana M.; Skau, Kristoffer Skjolden; Jostad, Hans Petter; Eiksund, Gudmund Reidar (Journal article; Peer reviewed, 2017)Offshore wind turbines are highly dynamic and tightly coupled systems subjected to variable cyclic loads. Designing and optimizing the support structure is a complex task, where several load scenarios have to be analysed ... -
Alternative Numerical Pile Foundation Models for Integrated Analyses of Monopile-based Offshore Wind Turbines
Page, Ana M.; Schafhirt, Sebastian; Eiksund, Gudmund Reidar; Skau, Kristoffer Skjolden; Jostad, Hans Petter; Sturm, Hendrik (Chapter, 2016)Lowering the cost for offshore wind energy remains a major challenge. Increasing the accuracy of analysis tools used in the design and optimization process can strengthen the reliability and reduce conservatism, thereby ... -
Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine
Aasen, Steffen; Page, Ana M.; Skau, Kristoffer Skjolden; Nygaard, Tor Anders (Journal article; Peer reviewed, 2017)everal studies have emphasized the importance of modelling foundation response with representative damping and stiffness characteristics in integrated analyses of offshore wind turbines (OWTs). For the monopile foundation, ... -
Impact of foundation modelling in offshore wind turbines: Comparison between simulations and field data
Page, Ana M.; Næss, Veronika; De Vaal, Jacobus Bernardus; Eiksund, Gudmund Reidar; Nygaard, Tor Anders (Journal article; Peer reviewed, 2019)The design of Offshore Wind Turbines (OWTs) relies on integrated simulation tools capable of predicting the system dynamic characteristics and the coupled loads and responses. Despite allefforts to develop accurate integrated ... -
Influence of Soil Parameters on the Fatigue Lifetime of Offshore Wind Turbines with Monopile Support Structure
Schafhirt, Sebastian; Page, Ana M.; Eiksund, Gudmund Reidar; Muskulus, Michael (Journal article; Peer reviewed, 2016)Designing support structures for offshore wind turbines is a complex task as these are highly dynamic systems subjected to long-term cyclic loads with variable amplitude. Long-term cyclic loading may cause stiffening or ... -
REDWIN – REDucing cost in offshore WINd by integrated structural and geotechnical design
Skau, Kristoffer Skjolden; Page, Ana M.; Kaynia, Amir M.; Løvholt, Finn; Norén-Cosgriff, Karin; Sturm, Hendrik; Andersen, H.S.; Nygaard, Tor Anders; Jostad, Hans Petter; Eiksund, Gudmund Reidar; Havmøller, O.; Strøm, P.; Eichler, D. (Journal article; Peer reviewed, 2018)The cost of offshore wind energy production has to be reduced continuously to improve its competitiveness compared to other energy sources. To contribute to this goal, a 4- year research project REDWIN – REDucing cost of ...