基于数字图像处理和有限元预测纳米颗粒增强聚合物基复合材料的弹性模量
Prediction for Elastic Modulus of Particle-Reinforced Polymer Nanocomposite Based on Digital Image Processing and Finite Element
摘 要
运用数字图像处理技术, 对有机粘土纳米颗粒增强聚丙烯复合材料的微观形貌进行处理, 获取有机粘土纳米颗粒的形状及其在聚丙烯基体中的分布情况, 进而建立充分反映其微观结构的二维代表体积元(RVE)模型; 对该模型用有限元方法进行拉伸模拟, 通过计算模型的平均应力和应变, 预测了复合材料的弹性模量, 并对其内部的应力和应变分布进行了分析。结果表明: 弹性模量的计算结果与试验结果差异较小, 验证了借助数字图像处理和有限元分析技术预测纳米颗粒增强聚合物基复合材料弹性模量是可行的。
代表体积元模型
纳米颗粒
复合材料
有限元
digital image
representative volume element model
nanoparticle
composite
finite element
Abstract
The digital image processing technology was used to obtain the shape of organoclay nanoparticles and distribution of the nanoparticles on PP matrix from the SEM image of PP/organoclay particle-reinforced nanocomposite. Then a 2D RVE(representative volume element)model could fully reflecting the microstructure of the composites was built.The stretching simulation process was carried out by finite element method, the elastic modulus of the composite was predicted by calculating the average stress and strain, and the distribution of the stress and strain in the composite were also analyzed. The results show that the calculation results fit well with the experiment ones. The method through the digital image processing and finite element analysis is reliable for predicting elastic modulus of particle-reinforced polymer nanocomposite.
中图分类号 TB332
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金资助项目(11071196,90916027)
收稿日期 2013/7/3
修改稿日期 2013/12/25
网络出版日期
作者单位点击查看
备注张阳(1989-), 男, 辽宁朝阳人, 博士研究生。
引用该论文: ZHANG Yang,NIE Yu-feng,WU Ya-tao. Prediction for Elastic Modulus of Particle-Reinforced Polymer Nanocomposite Based on Digital Image Processing and Finite Element[J]. Materials for mechancial engineering, 2014, 38(9): 99～102
张阳,聂玉峰,武亚涛. 基于数字图像处理和有限元预测纳米颗粒增强聚合物基复合材料的弹性模量[J]. 机械工程材料, 2014, 38(9): 99～102
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【6】王振清, 雷红帅, 王晓强, 等.纳米TiO2颗粒弱界面增强树脂基复合材料宏观力学行为有限元模拟［J］.复合材料学报, 2013,30(1):236-243.
【7】HBAIED K, WANG Q X, CHIA Y H J, et al. Modelling stiffness of polymer/clay nanocomposites［J］.Polymer,2007,48:901-909.
【8】丁秀丽, 李耀旭, 王新.基于数字图像的土石混合物体力学性质的颗粒流模拟［J］.岩石力学与工程学报, 2010,29(3):477-484.
【9】何春霞, 肖声明, 陆德荣, 等.纳米SiC/PTFE复合材料微观结构SEM图像处理及分析［J］.武汉科技大学学报, 2011, 34(1):23-27.
【10】杨智勇, 韩建民, 李卫京, 等.颗粒增强铝基复合材料均质假设有限元计算的有效性［J］.机械工程材料, 2009,33(11):35-38.
【11】卞凯, 姜传海, 栾卫志.TiB2/Al复合材料喷丸后微区残余应力的有限元模拟［J］.机械工程材料, 2011,35(1):86-88.
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【13】DONG Y, BHATTACHARYYA D, HUNTER P J. Experimental characterization and object-oriented finite element modelling of polypropylene/organoclay nanocomposites［J］.Composites Science and Technology,2008,60:2864-2875.
【14】杨松, 邵龙潭, 郭晓霞, 等.基于混凝土裂纹数字图像的有限元网格生成［J］.计算力学学报, 2012, 29(4): 635-640.
【15】ZENG Q H, YU A B, LU G Q. Multiscale modeling and simulation of polymer nanocomposites［J］.Progress in Polymer Science,2008,33:191-269.
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