本文選題：風(fēng)機葉片　切入點：非線性　出處：《同濟大學(xué)學(xué)報(自然科學(xué)版)》2017年10期

【摘要】：研究全尺寸葉片結(jié)構(gòu)非線性對靜載測試的影響,分析葉片應(yīng)變、彎矩、剛度和撓度之間的關(guān)系,構(gòu)建全尺寸葉片靜載試驗.通過三邊法測試葉片的非線性變形及加載角度,在葉片截面上粘貼應(yīng)變片監(jiān)測局部應(yīng)變.結(jié)果表明,與有限元目標值對比,在揮舞方向距離葉根4m附近的剛度最大相差48%;在擺振方向距離葉根23m至葉尖區(qū)域的剛度最大相差29%.通過實測結(jié)果修正有限元計算值,可為風(fēng)機模型載荷計算提供精確剛度數(shù)據(jù).
[Abstract]:The influence of structural nonlinearity of full-size blade on static load test is studied. The relationship among blade strain, bending moment, stiffness and deflection is analyzed, and the static load test of full-size blade is constructed. The nonlinear deformation and loading angle of blade are measured by triangulation method. The strain gauge is applied to the blade section to monitor the local strain. The results show that, compared with the finite element target value, The maximum stiffness difference between the swing direction and the blade root is 48m, and the maximum difference between the shimmy direction and the blade root is 29m. By modifying the finite element calculation value through the measured results, the accurate stiffness data can be provided for the load calculation of the fan model.
【作者單位】： 同濟大學(xué)機械與能源工程學(xué)院;
【分類號】：TM315
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本文編號：1653692