Automobile and ground fixed object collision accident analytical calculation and simulation reproduction system

Abstract

The invention discloses an automobile and ground fixed object collision accident analytical calculation and simulation reproduction system for road traffic accident appraisal of the public security traffic management department. In the system, the running speed and the collision speed of an accident automobile in an automobile and ground fixed object collision accident can be calculated by using basic data investigated on the accident site, and two-dimensional locus description of the accident automobile, three-dimensional process reproduction, main calculated data table output of the automobile and ground fixed object collision accident and accident process summarizing text output are realized. The system effectively improves the technical content of traffic accident appraisal and processing, so that the analysis and appraisal results of the system are easily high approved by the traffic management department, the accident appraisal unit and the accident parties; and the system plays an important role in distinguishing responsibilities, avoiding sharpening contradiction, reducing unstable factors of the society, promoting harmonious operation of social life and the like. The system can be widely popularized and applied, and has obvious industrial generality and social public welfare.

Description

technical field [0001] The invention relates to the field of computer simulation application technology, in particular to a computer analysis calculation and simulation reproduction simulation system of collision accident forms between automobiles and fixed objects on the ground. Background technique [0002] Collision accidents between vehicles and fixed objects on the ground refer to a special type of road traffic accident accidents in which the accident vehicle collides with fixed objects on the ground (such as utility poles, trees, guardrails, pier, etc.). Road accident. Therefore, its calculation and simulation reproduction methods have received special attention from traffic accident analysis and identification personnel and relevant management departments. The complexity of the calculation and analysis of vehicle dynamics for such accidents and the simulation and reproduction of the accident process has become one of the difficulties and cutting-edge technologies in ...

AI Technical Summary

Problems solved by technology

Due to the limitations, randomness and blindness of the parameter confirmation and state discrimination of complex road traffic accidents using traditional analysis and calculation methods, the accuracy and precision of the analysis and identification results are not high, which can easily lead to the division of responsibilities in traffic accidents. There are technical mistakes in the problem, which lead to social disputes

[0004] After searching the existing technical literature, it is found that most of the domestic and foreign studies on the calculation and simulation of automobile collision with ground fixed objects are finite element analysis models, and it is difficult to realize the collision due to the grid generation process that takes hours or even days. Real-time simulation of the process, and because the finite element simulation requires complete mechanical parameters, and the parameters of different models are different, so the application in traffic accident simulation is still at the theoretical stage

Foreign accident simulation software such as PC-CRASH requires the user to determine the friction coefficient, rebound coefficient and other parameters of the collision process, and then modify the initial value, friction coefficient, rebound coefficient, collision center position, contact surface angle and other parameters to simulate the entire process of the accident , and the input data of PC-CRASH is various, most of which are vehicle professional technical parameters, which are not universally applicable

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