The study on dynamic response analysis of aircraft tires under hard landing conditions

This study focuses on the dynamic response of aircraft tires under hard landing conditions. Through both quasi-static and dynamic compression testing, the mechanical properties of tire rubber at varying strain rates were assessed. Critical mechanical parameters were derived from these results and a finite element simulation was conducted to evaluate the impact of varying sinking speed, loads, and aircraft roll angles on tire sinking displacement and stress distribution. The findings indicate that increases in sinking speed and load significantly raise the peak stress within the tire rubber. At a sinking speed of 6.09 m/s or a load of 12,000 kg, the tire's load-bearing capacity is surpassed, with rubber stress exceeding 30 MPa. Excessive roll angles were found to potentially induce cracks in the sidewall rubber, though the overall threat to the tire's load-bearing capacity remains constrained. This research contributes significantly to the safety analysis of aviation tires under overloaded landing conditions and provides a theoretical foundation for the optimization of tire design.