摘要
通过有限元分析软件Abaqus、Matlab数据拟合工具及单轴拉伸试验,研究了Yeoh本构模型、Ogden本构模型及伪弹性理论模型对炭黑填充天然橡胶的Mullins效应仿真效果及规律。结果表明,(1)对单轴拉伸主加载曲线的拟合,Ogden模型精度更高,而Yeoh模型随着炭黑含量的增加在小变形处的拟合效果变差;(2)提出了伪弹性参数与伸长比之间的关系,找到了一种快速计算伪弹性参数的方法,且精度良好,极大地提高了计算效率。
Numerical simulation based on Abaqus and Matlab data processing tools,using data from uniaxial extension tests has been carried out to study the accuracy of Yeoh constitutive model,Ogden constitutive models and the pseudo-elastic model for characterising carbon-reinforced natural rubber's Mullins effect.The results show that:(1)When fitting the primary loading path,the curve of Ogden constitutive model has a higher accuracy than that of Yeoh constitutive model.And as carbon content increases,the precision of Yeoh model decreases in initial deformation region;(2)Relationship between pseudo-elastic parameters and the stretch has been determined,that is to say,a method of good precision and efficiency to calculate pseudo-elastic parameters by stretches is proposed.
出处
《计算力学学报》
CSCD
北大核心
2017年第3期372-378,共7页
Chinese Journal of Computational Mechanics
基金
国家自然科学基金(11372074)资助项目
