The Optimization Design For The Test Bench Of Large-scale Wind Turbine Blade

With the rapid development of the national industry, the emergence of the energy crisis and thecurrent drawbacks of traditional energy production, wind power has been rapidly developped, butalso faced with various problems. Flutter for the reason of such internal and external factors as winddirection, wind speed and the moment of inertia and gravity, the main reason for the destruction ofthe blade is shimmy. But the priority is to analyse the dynamic characteristics, and to study thenatural frequencies and mode shapes. Due to the presence of wind turbine test rig, the dynamiccharacteristics analysis is error-prone, so to demonstrate what the bench stiffness will influence thebaseband of wind turbine blade and to optimize the bench is particularly important in testing thebaseband of blade.Firstly introduce modal analysis of structural dynamics, and then use the the GH Bladedsimulated blades geometric parameters. ANSYS modeling is based on leaf structure characteristicsof different materials in different parts of blade and test bench, to conduct ply definitions and overlaysettings, and meshing, finite element model of them is finished. Test bench depend on two cases:hollow and solid at the wing root, by varying each side wall test rig of both cases and loading testrig,to solve dynamic characteristics of the overall model analysis,and conclude the impact of theconclusions of the fundamental frequency due to the test rig stiffness distribution on leaf, and finallyuse the conclusions to optimize test bench.