期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 30, 期 11, 页码 2149-2163出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2022.2051102
关键词
VUSDFLD; J-integral; geometry factor; J-R curve; CTOD-R curve
This study aims to develop a damage model to characterize the effect of geometric configuration on elastomeric composites. Experimental results show that the change in geometric configuration can affect the fracture properties of the material. Therefore, this model is expected to solve fracture-related issues in elastomeric composites used in electric vehicle tires and related applications.
Excellent tire wear resistance, wet grip resistance, and rolling resistance have made silica-filled green elastomeric composites suitable for an electric vehicle to lower fuel consumption. The study of damage mechanics of such materials has to be carried out in order to maximize safety during their usage. Accordingly, we aim to develop a damage model to characterize the effect of geometric configuration for such elastomeric composites. A 'VUSDFLD' damage subroutine is developed for the elastomeric composites, which is used in finite element analysis (FEA) and verified experimentally within 2% error. It is demonstrated that the change in geometric configuration can affect the fracture properties like J-integral and geometry factor. The J-R curve fits with a power-law equation with a correlation factor greater than 0.98. In contrast, using analytical modeling, an empirical relationship is proposed to trace CTOD-R curves of elastomeric composites with R-2 greater than 0.88, which exhibits dependency of geometric configuration on fracture of elastomeric composites. We envisage that this fracture model can solve most of the fracture-related problems in elastomeric composites used in tires for EV and allied applications.
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