本文選題：風電葉片 + 疲勞試驗　； 參考：《中南大學學報(自然科學版)》2016年11期

【摘要】：針對風電葉片雙錘激振加載過程出現振動耦合特性,對葉片疲勞加載系統(tǒng)進行合理簡化,基于拉格朗日方程建立動力學數學模型。利用小參數周期平均法對其在共振條件下的幅頻特性進行求解,通過相平面法得到振動系統(tǒng)的耦合特性及穩(wěn)定性條件,對系統(tǒng)振動耦合過程主要影響參數進行數值仿真。在此基礎上對系統(tǒng)耦合同步傳動、動態(tài)分岔耦合、振動耦合同步控制、葉片加載過程進行試驗研究,驗證理論分析的正確性及控制的有效性,為進一步開發(fā)高效的風電葉片疲勞加載試驗系統(tǒng),提供理論支持和試驗依據。
[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.
【作者單位】： 同濟大學機械與能源工程學院;南昌工程學院機械與電氣工程系;
【基金】：國家自然科學基金資助項目(51505290)~~
【分類號】：TM315
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本文編號：2053799