高速列车复合材料司机室混杂结构有限元分析(2)

13

的作用。这可能与以下几方面因素有关:①由于泡沫夹芯与钢骨架间的结合面增多,增加了结构的传力路径,使结构整体承载优势得以体现;②由于夹芯结构的等效抗弯刚度与夹芯层厚度的平方成正比,等效剪切刚度与夹芯层厚度成正比,因此夹芯层厚度的增加提高了其抗剪承载能力及抗弯刚度

[5]

夹芯制作蒙皮的复合材料司机室的混杂结构,便于采用RFI工艺一次整体成型。在保证司机室强度、刚度的前提下能减少钢材的用量,复合材料司机室自重降至680kg左右,减重约20%,效果明显。

参考文献

[1]胡清寒.复合材料在铁道车辆中的应用[J].国外铁道车辆,1997

(1)∶13216.

[2]GBelingardi,MPCavatorta,R.Materialcharacterizationof

acomposite2foamffrontstructureofahighspeedtrain[J].61∶132251

[.[J].铁

;③

玻璃钢面板为大面积连续成型的,与钢制小块蒙皮铆接相比,在承担平面内大部分拉伸、压缩和剪切载荷时,其变形能力优于钢板,能有效地降低应力集中发生的可能性。

4　结　语

综上所述,,,,增刊∶1972199.

[ANSYS7.0高级分析[M].机械工业出版社,2004.[5]LornaGibson,MichaelFAshby.多孔固体结构与性能[M].清华

大学出版社,2003.

FINITEELENTANALYSISOFCOMPOSITECABFORHIGHSPEEDTRAINS

ZHANGSheng;JIANDa2zhi;ZHOUSheng

1

1

2

(11CollegeofAerospaceandMaterialEngineering,NationalUniversityofDefenseTechnology,Changsha410073,China;21WidegeCo1Ltd1ofZhuzhouElectricLocomotiveWorks,Zhuzhou412001,China)Abstract:paredwithafullsteelcabofthehighspeedtrain,thenewcabstructureisofhigherstiffnessand20%decreaseinweightisachieved.

Keywords:highspeedtrain;GFRP;sandwich;structure;finite;element;structuraldesign

(上接第22页)

STUDYOFTHERMALCONDUCTIVITYOFGFRPSANDWICHSTRUCTURE

PANELSWITHHONEYCOMBCORE

ZHOUZhu2lin,WANGYa2xiong,YAOHui,ZHONGTian2lin(ShanghaiFRPResearchInstitute,Shanghai200126,China)

Abstract:Besideshighspecificstrengthandstiffness,GFRPsandwichstructurepanelswithhoneycombcorepossesslowerthermalconductivityandusedasaheatinsulationmaterial.Inthispaperthetheoreticalstudyofther2malconductivityispresentedonGFRPsandwichpanelswithhoneycombcore.Itanalyzesforconduction,convec2tionandradiation.Thetheoreticalcalculationformulasandcurvesofthermalconductivityaregiven.Goodagree2mentbetweencalculationresultsandexperimentvaluesisobtained.

Keywords:honeycomb;sandwichconstruction;thermalconductivity;GFRP;conduction;convection;radia2tion

FRP/CM　2006.No.2