The solid model and virtual prototype model are built. Kinematics, strength and rigidity analysis are completed with FEM simulation system of MSC.NASTRAN. The analysis results of stress, strain and displacement of finite element simulation are presented. The results of simulation were proved by vibration experiment. Based on the simulation and vibration experiment, the mechanics dynamical properties are proved, the main destroy form and locations are analyzed and indexed. The result shows that the rigidity and strengthen could meet the requirement of design of the motor. In the end, in order to satisfy the needs of kinds of clients, the effect of core length on the stress and displacement is also discussed through FEA simulation. Finally, an optimization structure of the Rotor of a vertical motor is given and analyzed, which has the guiding sense in the test and 0ptimizating for the rotor.
Dynamic stress of wind turbine blade has great influence on its reliability and fatigue life. In order to decrease the magnitude of dynamic stress, frequency modulation method is often used to avoid resonance. This paper created composite material model for a wind turbine blade. Blade model was imported to abaqus environment for modal analysis. In view of the characteristics of fiber reinforces plastic, a mesh was built to carry out the model analysis, and the first 6 orders of the vibration frequencies and mode shapes were obtained, by imposing certain bound on the root of blade. Meanwhile, The analysis results of the composite material blade considering stiffening effect were obtained. This method can shorten modeling time and improve working efficiency, and also it is the base for blade structure calculation and check and new product developing.
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