Constitutive model research for rubber-cord composites used in rubber track. (June 2020)

• Record Type: Journal Article
• Authors: Zhao, Zihan; Mu, Xihui; Du, Fengpo
• Is Part Of: Materials today communications. Volume 23(2020)
• Publication Date: 2020-06
• Subjects: Rubber track -- Fiber reinforced composite -- Anisotropy -- Hyperelastic -- Constitutive model; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2020.100937
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: In order to characterize the mechanical behaviors of rubber track with large deformation, nonlinearity and anisotropy in different operational conditions, a constitutive model for rubber-cord composites with interaction between rubber and cord is developed. The total strain energy is decomposed into three parts, representing the strain energy from rubber, cord, and interaction between rubber and cord. Based on the particle swarm optimization and Newton iteration method, an optimization algorithm for model parameters fitting is proposed. With the obtained parameters, the mechanical behaviors of rubber-cord composites are predicted by the developed model, and the prediction results have a good agreement with test data. The proposed model is validated by comparing finite element simulation results with uniaxial tension data of rubber-cord composites. The maximum error is about 10.86 %. Moreover, the influences of cord off-axis angle on the mechanical properties of rubber-cord composite are analyzed. The proposed model can be used for finite element analysis, and lays the foundation for finite element simulation of rubber tracks.