摘要
通过落锤冲击试验分别在复合材料加筋壁板的蒙皮中央、长桁平筋边缘和长桁轴线处冲击出深约1mm的凹坑,然后对其进行轴压试验,研究了损伤位置对加筋壁板轴压承载能力的影响,并与未损伤试样进行了对比。结果表明:损伤位置对复合材料加筋壁板轴压承载能力有很大影响,损伤位于蒙皮中央、长桁平筋边缘、长桁轴线处加筋壁板的屈曲载荷分别为未损伤加筋壁板的83.1%,90.7%,96.1%,破坏载荷分别为未损伤加筋壁板的90.2%,84.8%,79.7%;蒙皮对加筋壁板的整体稳定性起主要作用,筋条对加筋壁板的最终承载能力起主要作用。
The three different locations,central skin,stringer fillet border and stringer axis,on the composite stiffened panel were damaged about 1mm pit by the way of drop-hammer impact,in the next step,axial compression tests was carried on.Contrasted with a intact panel,the effect of damage locations on axial compression capacity of the composite stiffened panel was studied.The results show that damage location has a great impact on capacity of the panel.The buckling loads of the stiffened panels with damage locations in central skin,stringer fillet border and stringer axis were 83.1%,90.7%,96.1% of the intact panel,respectively,and the damage loads were90.2%,84.8%,79.7%of the intact panel,respectively.The skin plays a major role in stability of stiffened panel while fillet plays a major role in final carrying capacity.
出处
《机械工程材料》
CAS
CSCD
北大核心
2014年第9期95-98,共4页
Materials For Mechanical Engineering
关键词
损伤位置
复合材料
加筋壁板
承载能力
damage location
composite
stiffened panel
carrying capacity
