Browsing by Subject "Structural Engineering"
Now showing items 1-20 of 24
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Corrosion fatigue analysis of NREL's 15-MW offshore wind turbine with time-varying stress concentration factors
(2024)Over the last twenty years, significant development in wind turbine technologies has led to a dramatic increase in the scale of wind turbines with many now beginning to be installed in offshore locations. Consequently, ... -
Damping Ratio Estimation for a Slender Modular Building from Full Scale Ambient Response Monitoring
(2023)The application of modular construction in tall slender structures is a relatively novel concept. Modular buildings with heights exceeding 130m have been successfully constructed by combining reinforced concrete cores with ... -
The Effect of Acceleration Signal Length on the Outputs from Modal Identification Methods
(2023)The damping ratio is a significant factor influencing the dynamic behaviour of a structure. The safety, serviceability and habitability of a structure are all impacted by the damping ratio. Damping ratio does not relate ... -
Enhancing the reliability of floating offshore wind turbine towers subjected to misaligned wind-wave loading using tuned mass damper inerters (TMDIs)
(2023)Floating offshore wind turbines (FOWTs) are the largest rotating structures on the earth. Dynamically sensitive structures such as these must be protected in these environments to ensure that they can continue to operate ... -
Experimental and computational evaluation of modal identification techniques for structural damping estimation
(2022)The damping ratio is a key indicator of a structures susceptability to human discomfort due to dynamic loads. Computational models, wind tunnel studies and empirical data can provide estimates of the damping ratio of a ... -
Fluid inerter for optimal vibration control of floating offshore wind turbine towers
(2022)This paper proposes the use of a tuned mass damper fluid-inerter (TMDFI) for vibration control of spar-type floating offshore wind turbine towers. The use of an inerter in parallel with the spring and damper of a tuned ... -
Impact of Sources of Damping On the Fragility Estimates of Wind Turbine Towers
(2024)Fragility estimates in wind turbine towers have been investigated but the the effect of damping on fragility has not been studied. While damping can often be small, it can come from different sources for a wind turbine. ... -
Improved fatigue life of floating offshore wind turbine towers with tuned mass damper inerters (TMDIs)
(2023)Floating offshore wind turbines (FOWTs) are the largest rotating structures on earth. FOWTs are very flexible and dynamically sensitive, they are also installed in very harsh environments and exposed to stochastic ... -
Mitigation of wind induced accelerations in tall modular buildings
(2022)This paper compares two methods of mitigating wind induced vibrations in tall modular buildings. Tall buildings experience wind induced motion which can result in serviceability and habitability issues associated with ... -
Mitigation of Wind Induced Accelerations in Tall Modular Buildings
(2022)This paper compares two methods of mitigating wind induced vibrations in tall modular buildings. Tall buildings experience wind induced motion which can result in serviceability and habitability issues associated with ... -
Model Validation for the Wind Response of Modular High-Rise Buildings through Full Scale Monitoring
(2022)For many tall building forms, habitability requirements associated with excessive acceleration response become a governing design criterion as building heights increase. This study considers the wind-induced acceleration ... -
Multi-resolution wavelet pitch controller for spar-type floating offshore wind turbines including wave-current interactions
(2020)This paper proposes a wavelet multi-resolution based individual pitch control strategy for spar-type floating offshore wind turbines (FOWTs) and investigates its performance under joint wind-wave-current loads considering ... -
Nonlinear model predictive control to reduce pitch actuation of floating offshore wind turbines
(2020)Modern-day wind turbines use active pitch control to reduce mechanical loads on the turbines in addition to regulating generator power. These control algorithms increase blade pitch actuation, primarily to reduce the 1P ... -
Physics-Informed Neural Network surrogate model for bypassing Blade Element Momentum theory in wind turbine aerodynamic load estimation
(2024)This paper proposes the use of Artificial Neural Networks (ANNs), specifically Physics-Informed Neural Networks (PINNs), for dynamic surrogate modelling of wind turbines. PINNs offer the flexibility to model complex ... -
Regression models for predicting the inelastic seismic response of steel braced frames
(2022)This paper describes the development of regression equations to predict the peak inelastic drift and acceleration response of steel concentrically braced frame (CBF) building structures. A database of Engineering Demand ... -
Structural damping estimation from live monitoring of a tall modular building
(2023)The damping ratio is a key indicator of an individual structure's susceptibility to dynamic loads, including the level of discomfort experienced by the occupants of a tall building subjected to wind loading. While ...