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1、第3卷第4期航空工程進(jìn)展VolI3NO．42012年l1月ADVANCESINAERONAUTICALSCIENCEANDENGINEERINGNOV．2012文章編號(hào)：1674—8190(2012)04—447—06復(fù)合材料閉剖面加筋薄壁梁剛度系數(shù)計(jì)算分析張曉虎，孫秦，毋玲(西北工業(yè)大學(xué)航空學(xué)院，西安710072)摘要：復(fù)合材料的可設(shè)計(jì)性為通過(guò)彈性剪裁來(lái)獲得想要的變形模式帶來(lái)了優(yōu)勢(shì)，其結(jié)構(gòu)的耦合特性如拉扭耦合和彎扭耦合可以利用復(fù)合材料的各向異性來(lái)實(shí)現(xiàn)。以薄壁殼結(jié)構(gòu)力學(xué)理論為基礎(chǔ)，采用多種理論方法研究分析正交各向異性殼體本構(gòu)關(guān)系，給出適合復(fù)合材料層壓板矩形閉剖
2、面薄壁梁截面的剛度系數(shù)解析表達(dá)；采用逐階近似方法，完整設(shè)計(jì)復(fù)雜閉剖面的剛度系數(shù)數(shù)值算法；針對(duì)兩種典型的復(fù)合材料鋪層的矩形閉剖面梁截面布局構(gòu)型，進(jìn)行剛度特性的計(jì)算分析與討論，獲得鋪層角度對(duì)復(fù)合材料薄壁梁彎曲、扭轉(zhuǎn)及彎扭耦合剛度特性的定量結(jié)果。對(duì)分析設(shè)計(jì)閉剖面薄壁結(jié)構(gòu)剛度條件具有應(yīng)用價(jià)值。關(guān)鍵詞：復(fù)合材料層壓板；正交各向異性；矩形閉剖面薄壁梁；剛度系數(shù)；耦合剛度特性中圖分類(lèi)號(hào)：V214．8文獻(xiàn)標(biāo)識(shí)碼：AStiffnessCoefficientAlgorithmofThin—walledStiffenedBoxBeamofCompositewithClosedCro
3、ss—sectionZhangXiaohu，SunQin，WuLing(SchoolofAeronautics，NorthwesternPolytechniealUniversity，Xi’an710072，China)Abstract：Compositedesignsoffertheadvantageofachievingfavorabledeformationmodesthroughelastictailor—ing．Structuralcouplingsuchasextension-twistandbending～torsionarecreatedasa
4、resultoftheanisotropicpropertiesofcompositematerials．Basedonthestructuralmechanicstheoryoftwo—dimensionalthin-walledshellandprogressiveapproximationmethod，in-depthstudyOnthestiffnesscoefficientoforthotropicthin-walledboxbeamwithopenedandclosedcross～sectionsismade．Takingassumptionofh
5、omogeneousisotropicthin—walledboxbeam，differenttheoreticalapproachesareusedtOvalidatethecomprehensiveapplicabilityoftheanisotropicshelltheoryconstructed．Withapplicationoftheabove-mentionedtheory，acompletealgorithmisdesignedandprogrammedthroughFortranalgorithmiclanguagetOnumericallyc
6、omputethestiffnesscoefficientsofcomplexclosed—．cross—．sectionthin—．walledboxbeamwithcircumferentiallynon-uniformthicknessanddiscreteconcentrat—．edarea．Somenumericalexamplesarestudiedandthebending。twistingandcouplingstiffnesscoefficientsareobtainedrespectivelyfortwocompositeplylayout
7、sofrectangularthin-walledboxbeamwithclosed-section．Thereseultsarevaluableinacademicandengineeringapplicationsforthecontrollingofthestiffnessofthin-walledboxbeams．Keywords：compositelaminates；orthotropic；thin-walledboxbeam；stiffnesscoefficient；couplingstiffnesscharacteristics體結(jié)構(gòu)設(shè)計(jì)的突出特
8、點(diǎn)，復(fù)合材料的用量已達(dá)機(jī)體0引言結(jié)構(gòu)重
