材料科学与工程学报2024，Vol.42Issue(3)：435-441,7.DOI:10.14136/j.cnki.issn1673-2812.2024.03.011
基于三维细观随机模型的碳纳米颗粒/聚合物力电响应模拟
Simulation of Electro-mechanical Response of Carbon Nanoparticle Filled Polymers Based on Three-dimensional Meso Random Model
摘要
Abstract
A method combining finite element analysis and resistance calculation of equivalent micro-circuit networks is proposed to simulate the coupling electromechanical behavior of carbon nanoparticles filled polymer.Firstly,according to the improved nearest distance algorithm,a representative volume element model of carbon nanoparticles filled polymer is established by the secondary development of ABAQUS.The changes of junction width between two nearby aggregates under different loading conditions are obtained by the finite element analysis.Then,the composite is simplified as a 3D micro-circuit network comprised of vast random resistors,and the equivalent resistance is calculated by the transfer-matrix method and the tunneling resistance formula.Finally,the resistance of composite is related to the global stress by the junction width of adjacent aggregates,and the resistance-stress curve is obtained.To verify the approach,a composite of CB3100 filled silicone rubber is simulated under different axial compressive stresses,and the results are compared with the experimental and numerical data in reference.The results show that this method can not only effectively simulate the electromechanical behavior of carbon nanoparticles filled polymers,but also reveal the strain sensing mechanism in the meso-scale.关键词
碳纳米颗粒聚合物/代表性体积单元/细观有限元/微观随机电阻网络/力电响应Key words
Carbon nanoparticles filled polymers/Representative volume element/Finite element method in microscale/Microscopic random resistance networks/Electromechanical response分类
通用工业技术引用本文复制引用
王柱,左彦江,王俊璞..基于三维细观随机模型的碳纳米颗粒/聚合物力电响应模拟[J].材料科学与工程学报,2024,42(3):435-441,7.基金项目
国家自然科学基金资助项目(11702209) （11702209）
陕西省自然科学基础研究计划资助项目(2019JQ-400,2021JQ-547) （2019JQ-400,2021JQ-547）
