Research on vehicle retirement simulation

Based on the similarity between the regularity for change of technical condition of vehicle and biological population, the paper proposes a simulation model for the overall technical state of system vehicle. First a state transition equation of vehicle service life and a transition equation of vehicle accumulated mileage to measure the number of retired vehicles in a system are established. Then based on the above information it can be calculated when the vehicle is retired and the quantity of retired vehicles. In the end, the paper verifies the practicability of this method through a case.