Research on Performance and Design Methods of the Test Bench for Large Wind Turbine Blades

With the rapid development of wind power industry and the continuous upsizing of wind blades, the research needs of a test bench for the wind turbine blade with higher bearing capacity, which are suitable for larger wind turbine blades testing, have become increasingly urgent. In this context, the applicability of reinforced concrete structures with double inclined loading surface for the test bench for large wind turbine blades was analyzed based on the research of the test bench and the performance requirements of large wind turbine blade test, and the relevant design reference indexes were proposed from engineering experience. Secondly, on the basis of the engineering design, the finite element simulations were carried out on the mode of vibration and the stress characteristics under different loading conditions of the main structure of the test bench for large wind turbine blades, indicating that the control factor of the bearing capacity was the maximum principal tensile stress of the concrete. Finally, the influence of the design parameters such as wall thickness, flange size, reinforcement and material on the force of the main structure of the test bench was analyzed, leading to the proposal of optimization methods for the structural design.