复合材料科学与工程Issue(8)：8-14,32,8.DOI:10.19936/j.cnki.2096-8000.20250828.002
基于渐近均匀化法的黏弹性复合材料时域本构模型研究
Time-domain constitutive modeling of viscoelastic composites based on asymptotic homogenization method
摘要
Abstract
The aim of this paper is to establish an efficient and accurate method for modeling the macroscopic constitutive relationship of viscoelastic composites.By combining the asymptotic homogenization theory and the eigen-displacement method,a quantitative relationship between the microstructure and the macroscopic response is estab-lished.The reduced-order homogenization method is used to solve the characteristic displacement,which effectively improves the computational efficiency and directly obtains the macroscopic ontological relationship in the time do-main.The obtained ontological relationship is embedded into the finite element software ABAQUS in the form of a user-defined material subroutine(UMAT),and the reliability of the model is verified by comparison with Digimat.The numerical results show that the fiber volume fraction and viscoelastic decay ratio have a significant effect on the stress relaxation behavior of the composites.As the fiber volume fraction increases,both the initial stress value and the stress relaxation rate of the composites increase;while the increase in the decay ratio leads to a slower stress re-laxation rate.It is shown that the method can accurately predict the time-domain mechanical response of viscoelastic composites,which provides a strong theoretical support for the design and optimization of composites.关键词
渐近均匀化/黏弹性/体积分数/应力松弛/宏观-微观/复合材料Key words
asymptotic homogenization/viscoelasticity/volume fraction/stress relaxation/macro-micro/com-posites分类
通用工业技术引用本文复制引用
武顺心,朱水文..基于渐近均匀化法的黏弹性复合材料时域本构模型研究[J].复合材料科学与工程,2025,(8):8-14,32,8.基金项目
湖北汽车工业学院博士基金(BK202213) （BK202213）
汽车动力传动与电子控制湖北省重点实验室开放基金(ZDK12023B09) （ZDK12023B09）
湖北省教育厅项目(B2023076) （B2023076）
