摘要
为了研究冲击载荷下GFRP的动态响应特性,基于三维Hashin失效准则和正交各向异性材料本构模型嵌入用户自定义子程序VUMAT,采用ABAQUS有限元软件模拟不同冲击速度下,钢弹撞击不同厚度GFRP层合板,通过实验验证得出如下结论:(1)钢弹撞击靶板时,拉伸变形是GFRP层合板主要吸能方式,分层破坏是主要损伤模式,越靠近背弹面越易产生分层损伤;(2)冲击过程中,GFRP层合板各层吸能从前至后先减后增,但内能总体上呈小幅度下降趋势;(3)从首层至最外层,内能IE占比由26%变为12%,动能KE占比由26%变为85%,粘性耗散能VD占比由48%降低至3%。
In order to investigate the dynamic response characteristics of GFRP under impact load,a user-defined subroutine VUMAT based on the three-dimensional Hashin failure criterion and orthotropic anisotropic material constitutive model is embedded and ABAQUS finite element software is applied to simulate the impact of the steel projectile on GFRP laminated plate of different thicknesses at various impact velocities.Test results show that:(1)when steel projectile impacts the target plate,tensile deformation is the main energy absorption mode of the GFRP laminated plate and delamination damage is the main mode of failure,and delamination damage is more likely to happen at the area closer to the side opposite to the impact of the projectile;(2)during the process of impact,energy absorption of each layer of the GFRP laminated plate decreases and then increases from the front to the back,but the internal energy generally shows a trend of slight decrease;(3)from the first layer to the outermost layer,the proportion of internal energy IE changes from 26%to 12%,the proportion of kinetic energy KE changes from 26%to 85%,and the proportion of viscous dissipation energy VD decreases from 48%to 3%.
作者
陈闯
周少华
Chen Chuang;Zhou Shaohua
出处
《一重技术》
2025年第4期62-66,74,共6页
CFHI Technology
