铝蒙皮蜂窝夹层结构冲击响应研究

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Research on impact response of aluminum skin honeycomb sandwich structure

MEN Kunfa 1* ，XING Chaozheng²，MA Zhanqi 1 ， LI Liming （1.Harbin Aircraft Industry Group Co.，Ltd.，Harbin 150066; 2.95966 Troopsof the PLA，Harbin 150066）

Abstract：Aluminum skin-honeycomb sandwich structure，characterized byits lightweightand highload-bearing capacity，hasfoundextensiveapplicationinairraftstructures，particularlyinhelicopterconstruction.However，duetotherelativelythinouterskinofthesandwich structure，impactfrom foreignobjectscanleadtodentdefectsanddelaminationbetweentheskinandcore，potentiallycompromisingstructuralstrengthandstiffess.Toinvestigatetheresponseofarealhelicopter aluminum skin-honeycomb sandwich structureunderdiffrent impact energies，drop-weight impact tests were conducted.Basedon experimentaldata regarding dentdepthanddelaminationarea，suitable curvesand equations were established with highgoodness-of-fit：animpact energy-dentdepth curveandanimpactenergy-delaminationarea equation.Usingthescurves，theactualdentdepth was inverselyanalyzed to estimatethe impact energy，enablinganassessmentof structural performance based on the determined impact energy

Keywords： sandwich；impact；dent thickness；delamination

1引言

材加轻夹芯层构成。（剩余4624字）