复合材料泡沫夹芯壁板轴压稳定性研究

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Research on axial compression stability of composite foam sandwich panels

ZHAO Wenbo， ZHANG Wei*，YANG Ruiliang，WANG Yangyang，CAO Jianjian （Jiangsu Hengrui Aviation Industry Co.，Ltd.，Changshu 215500）

Abstract：Toaddress thestabilityof theupper wing panel inthedesignofaspecificaircraft，astudywasconductedonthe axial compressionstabilityofcompositefoamsandwichpanels.Basedonengineeringtheory，keyfactorsafectingpanelstability were identified.Using finite element numericalcalculations，comparativeanalyses were performedon parameters such assandwichthicknes，stiffnerconfiguration，andstiffenerquantity.Thestudyshowedthatforthesame wingboxstructure， increasing the foam sandwich height improved axial compression stability by 52% ，whileadding " Ω"- shapedstiffenersenhanced it by 82% .Compared with their weight gain ratios，the latter offred more significant performance benefits.This research provides theoretical support for aerospace panel structure design and has good engineering practical value.

Keywords： foam sandwich panels; axial compression stability; finite element analysis;buckling

1引言

复合材料泡沫夹芯壁板结构凭借其卓越的比强度和比刚度等特点，在航空航天领域特别是飞机壁板设计中得到了广泛应用[1-2]。（剩余6218字）