Considering the complexity of the finite element model for tread patterns and the high computational cost, this paper explores the influence of tread patterns on tire slip stiffness and proposes a compensation method. First, finite element models of the tire and rubber sample were developed. Viscoelastic material parameters were determined through theoretical analysis and simulation validation, while hyperelastic material parameters were obtained from testing to complete the tire finite element simulation and validation. Next, simulations of smooth and patterned tires were conducted to examine the effect of tread patterns on slip stiffness. Subsequently, finite element models of tires with varying specifications and corresponding tread patterns were created to analyze the impact of patterns on slip stiffness for different tire specifications. The effects of material properties and tire pressure on slip stiffness were also explored. Finally, based on the findings, a compensation method for tire slip stiffness in smooth tires was established. The results indicate that tread patterns reduce tire slip stiffness and have differing impacts on longitudinal and lateral stiffness. Under the same load, the effect of tread patterns on slip stiffness is nearly identical across various tire specifications, material properties, and tire pressures. The developed compensation method for tread pattern slip stiffness demonstrates high accuracy, with 96.6% for longitudinal stiffness and 97.6% for lateral stiffness. This study can significantly reduce the time and cost required to model tread pattern finite element models, offering valuable insights for tire design and performance optimization.
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