Effect of the temperature and strain rate on the tension response of uncured rubber: Experiments and modeling. (September 2020)

• Record Type: Journal Article
• Authors: Wang, Yinlong; Li, Zhao; Li, Xu; Li, Ziran; Wang, Yang
• Is Part Of: Mechanics of materials. Volume 148(2020)
• Publication Date: 2020-09
• Subjects: Uncured rubber -- Deformation mechanisms -- Temperature -- Strain rate -- Constitutive modeling -- Automated grid method; Strength of materials -- Periodicals; Mechanics, Applied -- Periodicals; Résistance des matériaux -- Périodiques; Mécanique appliquée -- Périodiques; Mechanics, Applied; Strength of materials; Periodicals; Electronic journals; 620.11
• DOI: 10.1016/j.mechmat.2020.103480
• Languages: English
• ISSNs: 0167-6636

Abstract

Highlights: The temperature and strain rate dependence of the tensile behaviors of uncured carbon black-filled rubber are investigated. The significant influences of the temperature and strain rate on deformation characteristics are discussed. A thermomechanical constitutive model is developed to represent the complex constitutive behaviors of uncured rubber. The distinct characteristics of the cyclic tests can be accurately captured by the proposed constitutive model. Abstract: The temperature and strain rate dependence of the tensile behaviors of uncured carbon black-filled rubber are investigated through quasi-static mechanical tests under different loading scenarios. The significant influences of both the temperature and strain rate on the distinct deformation characteristics (hysteresis, stress level at a certain stretch, and the Mullins effect) during the tensile process are systematically discussed and explained microscopically. An interpretation of the underlying physical mechanisms of uncured carbon black filled rubber is proposed, which is similar to that of vulcanized rubber. Based on this interpretation, a thermomechanical constitutive model is developed to represent the complex constitutive behaviors of uncured rubber. Using this new model, the distinct characteristics of the cyclic tests can be accurately captured over a wide range of temperatures and strain rates. Moreover, the experimental fitting results under selected working conditions can effectively predict the other experimental results.