本文選題：風(fēng)電葉片 + 疲勞試驗(yàn)��； 參考：《中南大學(xué)學(xué)報(bào)(自然科學(xué)版)》2016年11期

【摘要】：針對(duì)風(fēng)電葉片雙錘激振加載過(guò)程出現(xiàn)振動(dòng)耦合特性,對(duì)葉片疲勞加載系統(tǒng)進(jìn)行合理簡(jiǎn)化,基于拉格朗日方程建立動(dòng)力學(xué)數(shù)學(xué)模型。利用小參數(shù)周期平均法對(duì)其在共振條件下的幅頻特性進(jìn)行求解,通過(guò)相平面法得到振動(dòng)系統(tǒng)的耦合特性及穩(wěn)定性條件,對(duì)系統(tǒng)振動(dòng)耦合過(guò)程主要影響參數(shù)進(jìn)行數(shù)值仿真。在此基礎(chǔ)上對(duì)系統(tǒng)耦合同步傳動(dòng)、動(dòng)態(tài)分岔耦合、振動(dòng)耦合同步控制、葉片加載過(guò)程進(jìn)行試驗(yàn)研究,驗(yàn)證理論分析的正確性及控制的有效性,為進(jìn)一步開發(fā)高效的風(fēng)電葉片疲勞加載試驗(yàn)系統(tǒng),提供理論支持和試驗(yàn)依據(jù)。
[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(jì)大學(xué)機(jī)械與能源工程學(xué)院;南昌工程學(xué)院機(jī)械與電氣工程系;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51505290)~~
【分類號(hào)】：TM315
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本文編號(hào)：2053799