基于DF方程的原位微纤化复合材料泡沫结构的力学性能模拟分析  

Simulation analysis of mechanical properties of micro-fibrillated composite foams based on DF formula

作　　者：赵延龙 何美函 张凝 蒋晶[3] 王小峰[1] 李倩[1] ZHAO Yanlong;HE Meihan;ZHANG Ning;JIANG Jing;WANG Xiaofeng;LI Qian(National International Joint Research Center for Micro Nanoforming Technology,School of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou 450001,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学力学与安全工程学院,微纳成型技术国家级国际联合研究中心,郑州450001 [2]郑州大学材料科学与工程学院,郑州450001 [3]郑州大学机械与动力工程学院,郑州450001

出　　处：《中国塑料》2023年第6期50-58,共9页China Plastics

摘　　要：为了研究原位微纤复合泡沫材料的力学性能,针对不同孔隙率的原位微纤泡沫材料进行测试,以连续介质力学为基础,使用ABAQUS UMAT子程序对于测试获得的力学性能进行建模。对夹心结构泡沫在拉伸、压缩、弯曲3种不同载荷下的应力响应进行分析,并将模拟结果与实验结果对比分析。结果表明,实验与模拟误差不超过10%,偏差较小,证明所采用的本构模型能够很好地反映原位微纤泡沫材料的力学性能。In this work,the mechanical properties of in-situ fibrous foam materials with different porosity were measured,and the ABAQUS UMAT subroutine was used to model the obtained mechanical properties based on continuum mechanics.The stress response of the sandwich-structural foam was analyzed under three different loads of tension,compression and bending,and the simulation results were compared with the experimental ones.The results indicated that the error between the experimental and simulation data was less than 10%,and the deviation was small.This demonstrated that the constitutive model used in this study could well reflect the mechanical properties of in-situ fibrous foam materials.

关 键 词：复合材料 原位成纤 本构模型 椭圆率 屈服应力 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]