碳纤维增强复合材料多孔阵列薄壁圆管的抗冲击与吸能性能  

Impact Resistance and Energy Absorption Properties of CFRP Thin-walled Circular Tube with Porous Arrays

作　　者：金跃 缪馥星[1] JIN Yue;MIAO Fuxing(Key Laboratory of Impact and Safety Engineering of Ministry of Education of China,Ningbo University,Ningbo 315211,Zhejiang,China;Metamaterial Research Center,Wuzhen Laboratory,Tongxiang 314500,Zhejiang,China)

机构地区：[1]宁波大学冲击与安全工程教育部重点实验室,浙江宁波315211 [2]乌镇实验室超材料研究中心,浙江桐乡314500

出　　处：《兵工学报》2025年第2期103-111,共9页Acta Armamentarii

基　　金：国家自然科学基金项目(11872218,11572161,11302109);机械结构强度与振动国家重点实验室(SV2016-KF-17);浙江省“近海结构冲击安全防护与健康监测”重点科技创新团队(2013TD21)。

摘　　要：为改善薄壁圆管的抗冲击与吸能性能,设计一种多孔阵列薄壁碳纤维增强复合材料(Carbon Fiber Reinforced Composites,CFRP)管,研究其分别在轴向和横向冲击载荷下的抗冲击与吸能性能。基于有限元法建立CFRP多孔阵列薄壁管在冲击载荷作用下的有限元模型,并分析不同铺层角度对此结构的抗冲击与吸能性能的影响。数值分析结果表明:相比普通薄壁CFRP圆管和方管,在轴向和横向冲击载荷作用下,CFRP多孔阵列薄壁圆管有更高的比吸能和峰值载荷,而过高的峰值载荷对被保护的结构不利,但可通过改变CFRP的铺层角度而改变冲击峰值载荷和比吸能值;在轴向冲击载荷下,多孔阵列薄壁圆管铺层角度由[90°/45°/90°/0°]2S变为[90°/0°/90°/0°]2S时,有效压缩位移内的最大压缩载荷降低约10.1%,比吸能值提高约15.1%。研究结果将对CFRP薄壁管的轻量化和抗冲击性能提升的工程应用具有一定的指导意义。In order to improve the impact resistance and energy absorption of thin-walled circular tube,a carbon fiber reinforced composites(CFRP)thin-walled tube with porous array is designed to investigate its impact resistance and energy absorption performance under axial and transverse impact loads,respectively.A finite element model of CFRP thin-walled tube with porous arrays under impact loading is established based on the finite element method(FEM).The effects of different lay-up angles on the impact resistance and energy-absorbing properties of the structure are analyzed.Numerical results show that CFRP thin-walled circular tube with porous arrays has higher specific energy absorption and peak load,which are too high for the protected structure.But the peak impact load and specific energy absorption values can be changed by varying the lay-up angle of CFRP in order to enhance impact damage resistance.The maximum compression load within the effective compression displacement is reduced by about 10.1%and the specific energy absorption value is increased by about 15.1%when the lay-up angle of thin-walled circular tube with porous arrays is changed from[90°/45°/90°/0°]2S to[90°/0°/90°/0°]2S under axial impact loading.The preliminary results will be a guide for the engineering application of lightweighting and impact resistance enhancement of CFRP thin-walled tube.

关 键 词：碳纤维增强复合材料 多孔阵列薄壁圆管 抗冲击性能 能量吸收 有限元分析 

分 类 号：O347.3[理学—固体力学]