Aproximación a un modelo de rodadura complementario en la reconstrucción analítica de accidentes vehículo-peatón

Abstract

A complementary test model of launching distance applied is presented in the analytic reconstruction of front collision automobile-pedestrian.

In this work it is considered that when the pedestrian hits the floor when finishing the flight phase, this it can be modeled in first approach like a sphere, which presents a slip phase followed by one in rolling.

The proposed pattern in this work consists in the addition of a term, which allows to find in a different way the involved friction coeficient in the haulage phase that describes the launching distance test for the analytic reconstruction of vehicle-pedestrian collision.

This term is generated when considering to be possible that person rolls over the road, which can be modeled using the Lagrangian model, like the sphere in rolling movement.

It was found the new term is directly related to the trajectory described by the person in the last phase, since to determine the friction coefficients in this stage, this one should be known.

With this work it intends a new investigation line inside the forensic physics that is devoted to measure trajectories in situ, which allow to diminish the uncertainty hurtled by the tests based on the traditional method of experimental measuring.