风电叶片双锤激振加载振动耦合特性及试验研究

发布时间：2018-06-22 18:36

  本文选题：风电叶片 + 疲劳试验　； 参考：《中南大学学报(自然科学版)》2016年11期

【摘要】：针对风电叶片双锤激振加载过程出现振动耦合特性,对叶片疲劳加载系统进行合理简化,基于拉格朗日方程建立动力学数学模型。利用小参数周期平均法对其在共振条件下的幅频特性进行求解,通过相平面法得到振动系统的耦合特性及稳定性条件,对系统振动耦合过程主要影响参数进行数值仿真。在此基础上对系统耦合同步传动、动态分岔耦合、振动耦合同步控制、叶片加载过程进行试验研究,验证理论分析的正确性及控制的有效性,为进一步开发高效的风电叶片疲劳加载试验系统,提供理论支持和试验依据。
[Abstract]:In view of the vibration coupling characteristics of wind turbine blade subjected to double hammer excitation, the blade fatigue loading system is reasonably simplified, and the dynamic mathematical model is established based on Lagrange equation. The amplitude-frequency characteristic of the vibration system is solved by using the method of periodic averaging with small parameters. The coupling characteristics and stability conditions of the vibration system are obtained by the phase plane method. The main parameters affecting the vibration coupling process of the system are numerically simulated. On this basis, the system coupling synchronous drive, dynamic bifurcation coupling, vibration coupled synchronous control and blade loading process are tested and studied to verify the correctness of the theoretical analysis and the effectiveness of the control. It provides theoretical support and experimental basis for the further development of an efficient wind turbine blade fatigue loading test system.
【作者单位】： 同济大学机械与能源工程学院;南昌工程学院机械与电气工程系;
【基金】：国家自然科学基金资助项目(51505290)~~
【分类号】：TM315
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本文编号：2053799