To provide a simulation method, which enables a user to accurately simulate a vehicle crash within a short period of time by using a simplified model comprising a vehicle and a dummy.

A method for the simulation comprises: a step for formulating mathematical equations for a mechanical model of the vehicle, a mechanical model for the dummy mounted on a seat of the vehicle, and a mechanical model for binding the dummy to the seat by using an equation of motion; a step for computing a behavior of the dummy if the vehicle crashes, by replacing a variable of the equation of motion with a characteristic of a spring determined by the equation of motion through experience of a dummy thread as well as by adding a characteristic of speed reduction to a vehicle model; and a step for predicting the characteristics of speed reduction at a driver's chest if the vehicle crashes.