摘要
为了精确控制玻璃纤维增强塑料(Glass Fiber Reinforced Plastic,GFRP)/铝合金叠层的铆接干涉量,降低GFRP材料因铆接产生的损伤,需要对压铆力对干涉量的影响趋势进行研究。对2A10材料Φ4mm铆钉在连接GFRP/2A12铝合金叠层的电动伺服压铆过程及不同压铆力和预制孔下的铆接干涉量进行了有限元仿真分析,根据仿真结果开展了不同压铆力的压铆试验,对钉杆不同位置的干涉量进行了测量并做了微观检测分析。结果表明,同一预制孔下同测量位置的干涉量随着压铆力的增加而增大,同压铆力下干涉量沿叠层厚度方向(铆钉头向镦头方向)呈现递减趋势;选择Φ4.2mm预制孔、18.3~18.7kN压铆力能够获得理想干涉量且GFRP复合材料无明显损伤。
In order to control the riveting interference and minimize the damage of GFRP composite caused by riveting,it is necessary to study the influence trend of riveting squeeze force on the interference ofΦ4mm 2A10 rivet.The dynamic riveting process and the interference of the rivet have been simulated by ABAQUS on the effects of diameter of pre-drilled hole and riveting squeeze force ofΦ4mm 2A10 aluminum alloy rivet on GFRP composite and aluminum alloy layers.On the basis of the simulation the experimental investigations are performed.The Interference test and metallographic analysis of the specimens are conducted.Results indicate that the interference of the same measurement location in the rivet increases with the increase of the riveting squeeze force and the interference with the same riveting squeeze force decreases through-the-thickness.Φ4.2mm diameter of pre-drilled hole and 18.3~18.7kN riveting squeeze force can achieve the optimum interference and the GFRP composite has no apparent injuries.
作者
朱亚蓉
马兴海
杨帅
吴赟
安立辉
ZHU Yarong;MA Xinghai;YANG Shuai;WU Yun;AN Lihui(Tianjin Long March Launch Vehicle Manufacturing Co.Ltd.,Tianjin,300462;Capital Aerospace Machinery Company Limited,Beijing,100076;China Academy of Launch Vehicle Technology,Beijing,100076)
关键词
玻璃纤维增强塑料
压铆力
干涉量
递减趋势
理想干涉量
glass fiber reinforced plastic
riveting squeeze force
interference
decrease
optimum interference
