摘要
多轴疲劳加载可使风电叶片各截面的试验载荷更等效实际所受疲劳载荷,缩短试验周期。针对风电叶片双轴疲劳加载系统,建立系统的动力学模型,列出动力学方程,再对振动体的运动轨迹仿真求解,得出运动轨迹图形。在此基础上,分析系统出现机电耦合的原因。利用试验装置验证,为多轴疲劳系统的应用提供理论依据及试验验证,也为后续的风电叶片疲劳加载试验打下基础。
Multi-axial fatigue loading can make the load in the sections of wind turbine blade to approach the real fatigue load condition and shorten the test period. In this paper, the dynamics model of the biaxial fatigue loading system for the wind turbine’s blades test is built. According to the kinetics equation, the trajectory of the vibrating body is simulated and the diagrams of the trajectory are drawn. On this basis, the cause of the electro-mechanical coupling phenomenon of the system is analyzed and then validated by experimental testing. This work provides a theoretical basis and an experimental reference for the application of multi-axial fatigue system to the fatigue loading test for wind turbine blades.
出处
《噪声与振动控制》
CSCD
2014年第5期114-116,共3页
Noise and Vibration Control
关键词
振动与波
多轴
风电叶片
振动特性
疲劳加载
vibration and wave
multi-axis
wind turbine blade
vibration performance
fatigue loading
