CAJ | 학술논문

基于 AUTODYN有限元软件,研究了Kevlar-129纤维增强复合材料的抗侵彻性能。通过质量为10 g的 FSP破片对厚度为8、10、12、14、16以及18 mm 的六组 Kevlar 纤维靶板进行撞击模拟,获得了 FSP破片贯穿6组靶板的弹道极限,并分析了靶板的弹道极限、比吸收能随板厚的变化关系。结果表明,在板厚8-18 mm范围内,Kevlar纤维靶板的弹道极限随板厚的增加呈线性增长；在此范围内,靶板的比吸收能也呈近似线性增长,但在板厚为10-16 mm时,增长稍缓。对比还发现,比吸收能随板厚的变化规律与靶板面密度的变化规律几乎相同,二者都可用于描述Kevlar-129纤维复合材料靶板在 FSP 破片碰撞下比吸收能的变化。
기우 AUTODYN유한원연건,연구료Kevlar-129섬유증강복합재료적항침철성능。통과질량위10 g적 FSP파편대후도위8、10、12、14、16이급18 mm 적륙조 Kevlar 섬유파판진행당격모의,획득료 FSP파편관천6조파판적탄도겁한,병분석료파판적탄도겁한、비흡수능수판후적변화관계。결과표명,재판후8-18 mm범위내,Kevlar섬유파판적탄도겁한수판후적증가정선성증장；재차범위내,파판적비흡수능야정근사선성증장,단재판후위10-16 mm시,증장초완。대비환발현,비흡수능수판후적변화규률여파판면밀도적변화규률궤호상동,이자도가용우묘술Kevlar-129섬유복합재료파판재 FSP 파편팽당하비흡수능적변화。
The penetration resistance of Kevlar-129 fiber reinforced composite materials was investigated with AUTODYN soft-ware.The ballistic limits of the fragment that pierced 6 kinds of target plates were obtained by finite element simulation when the 10 g fragment simulation projectile (FSP)impacting to the target plates of different thickness values of 8,10,12,14,16 and 1 8 mm with appropriate velocity,respectively,and the influences of thickness on the ballistic limits and the specific energy absorption were analyzed.The results show that the ballistic limit of Kevlar-129 fiber reinforced composite plates presents line-ar growth with the increase of the target thickness in the range from 8 to 1 8 mm.The specific energy absorption of plates pres-ents approximately linear growth,but there is slightly slow growth in the range from 10 to 16 mm of the target thickness.It al-so can be found that the influences of plate thickness and surface density on the varying pattern of specific energy absorption are almost the same.Therefore,both of them can be used to characterize the variation of specific energy absorption under the im-pact of the FSP fragment.