井冈山大学学报（自然科学版）2025，Vol.46Issue(6)：79-94,16.DOI:10.3969/j.issn.1674-8085.2025.06.009
冲头尺寸与冲击速度对CFRP层合板冲击损伤形成与扩展的影响
Influence of punch size and impact velocity on the formation and expansion of impact damage in CFRP laminates
摘要
Abstract
Carbon fiber reinforced polymer(CFRP)composite materials have the characteristics of high specific strength,high specific modulus,low density,and corrosion resistance,having significant advantages compared to the traditional metals.However,it is susceptible to varying degrees of impact during the service,resulting in internal damage.Estimating the impact behavior of CFRP laminates using finite element method is a commonly used and effective approach.This article simulates the impact mechanical behavior of three sizes of blunt heads on CFRP laminates under two different impact velocities using ABAQUS finite element method.The impact response,damage dissipation energy,and the formation and propagation of impact damage under different conditions are compared,and the mechanism of the interaction between punch size effect and impact velocity is analyzed.The results indicate that the dissipated energy of impact damage increases with the increase of velocity and punch size,and the amplification effect of velocity on the degree of damage is significant;The synchronous increase in dissipated energy and sudden decrease in load indicate the evolution of damage.The interlayer layering is asymmetrically distributed away from the punch due to the synergistic effect of out of plane stretching induced by bending and interlayer shear.The speed injects kinetic energy to dominate the damage severity,while the size controls the damage extent through the contact stress.The impact resistant design should focus on suppressing the expansion of internal tensile damage at high speeds.关键词
CFRP/低速冲击/有限元模拟/损伤特性/能量吸收Key words
CFRP/low-velocity impact/finite element simulation/damage characteristics/energy absorption引用本文复制引用
肖琳,魏忠桦,俞爱民,张问琳,彭建文,王冠辉,韩润林..冲头尺寸与冲击速度对CFRP层合板冲击损伤形成与扩展的影响[J].井冈山大学学报（自然科学版）,2025,46(6):79-94,16.基金项目
国家自然科学基金项目(22366021) （22366021）
江西省重点研发计划"揭榜挂帅"企业需求类项目(20244BBG73013) （20244BBG73013）
江西省教育厅科技计划项目(GJJ2401508,GJJ2401506) （GJJ2401508,GJJ2401506）
