Combined-book

Sukhvarsh Jerath University of North Dakota Civil Engineering Professor sukhvarsh.jerath@engr. und.edu Poster Title: Seismic Analysis and Design of Wind Turbines Abstract: The role of wind turbines in the production of alternate source of energy continues to grow rapidly theroughout the world as the electric power generated by the wind is increasing.The growth has led to the increased interest in the seismic design of wind towers. The current turbines are taller because they are constructed in low wind velocity areas. So the seismic force may be larger than the wind force. the wind turbine structure consists of a tower fixed at the base, a nacelle that sits at the top of the otower and contains the rotor, and the hub attached to the front of the nacelle to which wind turbine blades are attached. The wind turbine is analyzed by the finite element method using the ANSYS program. The tower and the blades are modeled by shell elements, the hub and the nacelle are modeled by the solid elements in the finite element model. This research project is conducted to study the effect of damping, turbine size and weight on the seismic behvior. Three different earthquakes, Imperial Valley, Landers, and the Northridge, recorded in the literature are used in the study.