基于面胞-内胞建模的三维编织复合材料冰球撞击分析方法及验证  

Ice-ball impact analysis method and verification of three-dimensional braided composites based on surface unit-cell and interior unit-cell modeling

作　　者：赵子豪 刘璐璐[1] 徐凯龙 罗刚[2] 赵振华[2] 陈伟[1] ZHAO Zihao;LIU Lulu;XU Kailong;LUO Gang;ZHAO Zhenhua;CHEN Wei(Aero-engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学,能源与动力学院,航空发动机热环境与热结构工业和信息化部重点实验室,南京210016 [2]南京航空航天大学,机械结构力学及控制国家重点实验室,南京210016

出　　处：《航空材料学报》2023年第5期106-114,共9页Journal of Aeronautical Materials

基　　金：国家自然科学基金项目(51975279);航空科学基金(201941052001)。

摘　　要：针对碳/环氧树脂三维四向编织复合材料开展冰球高速冲击下的损伤研究。应用空气炮冲击实验系统,分别用三种不同冲击速度进行冲击实验,对试件的主要损伤位置进行工业CT扫描,观察其内部损伤形式。分别考虑面胞区域和内胞区域的不同,应用宏观本构模型和冰球的应变率相关材料模型建立冰球冲击三维编织复合材料的有限元仿真模型,研究复合材料厚度和冰球冲击角度对材料损伤的影响,并与实验进行对比验证。结果表明:面胞区域的基体损伤程度相较于内胞区域更严重;迎弹面的损伤面积一般要大于背弹面;斜撞击的冲击角度对损伤面积和损伤位置有所影响,随着冲击角度降低,复合材料的损伤面积也会减小;提升复合材料板的厚度可以提高吸收能量的能力并降低材料损伤面积。The high-speed ice-ball impact damage research of epoxy resin/carbon fiber 3D four-way braided composites was carried out.Using the air gun impact test system,ice balls with three different impact velocities were used to conduct impact tests.After the test,industrial CT scans were performed on the main damage positions of the test pieces,and the internal damage forms were observed.The composite macro constitutive model based on surface unit-cell and interior unit-cell and a strain rate related material model of the ice were used to establish the finite element model.The simulation model was compared with the test.The results show that the damage of the matrix in the surface unit-cell area is more serious than that in the interior unit-cell area,the damage area of the front surface is generally larger than that of the back surface,the oblique impact angle has an influence on the damage area and damage location.As the impact angle decreases,the damage area of the composite material also decreases.Increasing the thickness of plate can improve the ability to absorb energy and reduce the damage area of the material.

关 键 词：三维编织复合材料 冰撞击 单胞 数值分析 

分 类 号：V258[一般工业技术—材料科学与工程]