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填充橡胶材料是由纳米粒子增强的复合多相材料。由于橡胶交联网络和填充粒子所形成的二级网络并存,填充橡胶呈现出复杂的力学行为,如大变形黏超弹性、动态应力软化效应,自生热效应等。如何构建合理的本构模型准确描述其力学行为一直是橡胶材料研究的热点和难点。而近年来数值仿真技术的发展对填充橡胶本构关系的可靠性,准确性和数值稳定性提出了更高的要求。本文综合前人工作,总结了填充橡胶超弹性、黏弹性、流变本构研究的进展。特别从本构关系与有限元分析相容性的角度,分析了各常用模型的精度、使用范围和参数化性能,为橡胶力学仿真提供指导,并指出了目前橡胶本构模型研究中所存在的问题,探讨了改进的方向。
Filled rubber materials are nanoparticle-reinforced composite multiphase materials. Due to the coexistence of secondary networks formed by the rubber cross-linked network and the filler particles, the filled rubber exhibits complicated mechanical behaviors such as large deformation viscous hyperelasticity, dynamic stress softening effect and self-generated heat effect. How to build a reasonable constitutive model to accurately describe the mechanical behavior of rubber materials has been a hot and difficult. In recent years, the development of numerical simulation technology has put forward higher requirements on the reliability, accuracy and numerical stability of filled rubber constitutive relations. Based on the previous work, this paper summarizes the research progress of the super elastic, viscoelastic and rheological constitutive of filled rubber. Especially from the perspective of compatibility between constitutive relation and finite element analysis, the accuracy, range of use and parameterization of each common model are analyzed to provide guidance for rubber mechanics simulation. At the same time, the existing problems of rubber constitutive model Problem, explored the direction of improvement.