中南大学学报（自然科学版）2016，Vol.47Issue(11)：3692-3699,8.DOI:10.11817/j.issn.1672-7207.2016.11.011
风电叶片双锤激振加载振动耦合特性及试验研究
Experimental study and coupling characteristics of double hammer excitation fatigue loading system
摘要
Abstract
The double hammer excitation fatigue loading system was simplified for the coupling-problem occurring in case of wind turbine blade loading multi-point excitation. The dynamic mathematical model was established based on lagrange equations by using the two eccentrical blocks’ vibration loading as object. Electromechnical coupling equations for the system was constructed and then the electromechanical coupling was solved by using the small parameter cycle average method in resonance conditions. The electromechnical coupling characteristics and stability conditions of vibration system were obtained by the phase plane method. The mechanism of system coupling was revealed. On this basis, the mechanical and electrical coupling characteristics of primary resonance, system dynamic bifurcation coupling and synchronization control were studied. The coupling characteristics of dynamic bifurcation and avoiding method were obtained. Finally, the correctness of theoretical analysis through the test provides guidance for the engineering application of the fatigue loading system.关键词
风电叶片/疲劳试验/双锤激振/耦合Key words
wind turbine blade/fatigue test/double excitation/coupling分类
机械制造引用本文复制引用
廖高华,乌建中,来鑫..风电叶片双锤激振加载振动耦合特性及试验研究[J].中南大学学报（自然科学版）,2016,47(11):3692-3699,8.基金项目
国家自然科学基金资助项目(51505290)(Project(51505290) supported by the National Natural Science Foundation of China) （51505290）
