發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)高階共振可激性的研究

發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)高階共振可激性的研究發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)高階共振可激性的研究摘要：發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)的高階共振可激性是一個關(guān)鍵的研究領(lǐng)域。在這項研究中，我們通過實驗和數(shù)值模擬方法來研究發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)的共振響應(yīng)。實驗結(jié)果表明，發(fā)動機尾流引起的葉盤結(jié)構(gòu)的共振響應(yīng)可能導(dǎo)致葉盤的振動幅度增加，從而影響發(fā)動機的性能和壽命。數(shù)值模擬結(jié)果表明，尾流的頻率和強度對葉盤結(jié)構(gòu)的共振響應(yīng)有著明顯的影響。在本文中，我們首先介紹了發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)的研究背景和意義。接著，我們對葉盤結(jié)構(gòu)的共振現(xiàn)象進(jìn)行了理論分析，并提出了一個數(shù)值模型來研究尾流對葉盤結(jié)構(gòu)的共振響應(yīng)。然后，我們利用該數(shù)值模型進(jìn)行了一系列數(shù)值模擬。實驗結(jié)果表明，發(fā)動機尾流的頻率和強度對葉盤結(jié)構(gòu)的共振響應(yīng)有著顯著的影響。我們還對發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)共振可激性的影響機制進(jìn)行了深入分析。實驗和數(shù)值模擬結(jié)果都表明，尾流的頻率和強度對葉盤結(jié)構(gòu)的共振響應(yīng)有著重要的影響。我們還發(fā)現(xiàn)，葉盤結(jié)構(gòu)的共振響應(yīng)隨著尾流頻率的增加而增加，但在一定頻率范圍內(nèi)飽和。此外，我們還發(fā)現(xiàn)，尾流強度的增加會導(dǎo)致共振響應(yīng)的增加。最后，我們在實驗中驗證了數(shù)值模擬結(jié)果的準(zhǔn)確性，并分析了影響共振響應(yīng)的其他因素。實驗結(jié)果表明，共振響應(yīng)不僅與尾流的頻率和強度有關(guān)，還與葉盤結(jié)構(gòu)的剛度和阻尼特性有關(guān)。綜上所述，本文通過實驗和數(shù)值模擬方法研究了發(fā)動機靜子尾流激勵對葉盤結(jié)構(gòu)高階共振可激性的影響。研究結(jié)果對優(yōu)化葉盤結(jié)構(gòu)設(shè)計和提高發(fā)動機性能具有重要意義。關(guān)鍵詞：發(fā)動機靜子尾流激勵；葉盤結(jié)構(gòu)；高階共振；共振響應(yīng)；數(shù)值模擬Abstract:Theresearchonthehigh-orderresonanceexcitationoftheturbinediskstructurebythestationaryvanewakeflowexcitationisakeyresearcharea.Inthisstudy,weinvestigatedtheresonantresponseoftheturbinediskstructuretotheexcitationofthestationaryvanewakeflowthroughexperimentalandnumericalsimulationmethods.Experimentalresultsshowedthattheresonantresponseoftheturbinediskstructurecausedbytheenginewakeflowmayleadtoanincreaseinthevibrationamplitudeofthedisk,therebyaffectingtheperformanceandlifespanoftheengine.Numericalsimulationresultsindicatedthatthefrequencyandintensityofthewakeflowhaveasignificantimpactontheresonantresponseofthediskstructure.Inthispaper,wefirstintroducetheresearchbackgroundandsignificanceoftheexcitationoftheturbinediskstructurebythestationaryvanewakeflow.Then,weperformedatheoreticalanalysisoftheresonantphenomenonofthediskstructureandproposedanumericalmodeltostudytheresonantresponseofthediskstructuretothewakeflow.Subsequently,aseriesofnumericalsimulationswereconductedusingthenumericalmodel.Theexperimentalresultsshowedthatthefrequencyandintensityoftheenginewakeflowhaveasignificantinfluenceontheresonantresponseofthediskstructure.Wefurtheranalyzedthemechanismoftheinfluenceoftheexcitationoftheturbinediskstructurebythestationaryvanewakeflow.Bothexperimentalandnumericalsimulationresultsindicatedthatthefrequencyandintensityofthewakeflowhaveanimportantimpactontheresonantresponseofthediskstructure.Wealsofoundthattheresonantresponseofthediskstructureincreaseswiththeincreaseofthewakeflowfrequency,butsaturateswithinacertainfrequencyrange.Inaddition,wefoundthattheincreaseinwakeflowintensityleadstoanincreaseinresonantresponse.Finally,weverifiedtheaccuracyofthenumericalsimulationresultsthroughexperimentsandanalyzedotherfactorsthataffecttheresonantresponse.Experimentalresultsshowedthattheresonantresponseisnotonlyrelatedtothefrequencyandintensityofthewakeflow,butalsotothestiffnessanddampingcharacteristicsofthediskstructure.Inconclusion,thisstudyinvestigatedtheinfluenceoftheexcitationoftheturbinediskstructurebythestationaryvanewakeflowonthehigh-orderresonanceexcitationthroughexperimentalandnumericalsimulationmethods.Theresearchresultsareofgreatsignificanceforoptimizingthedesignofthediskstructurean