HIII dummy chest displacement correction method based on action of combined constraint system

Abstract

The invention provides an HIII dummy chest displacement correction method based on the action of a combined constraint system, which comprises the following steps of obtaining chest displacement d1(t)on a vehicle only provided with a safety belt, and calculating the influence dd(t) on the chest displacement of an HIII dummy by a safety airbag during collision on the vehicle provided with the safety belt and the safety airbag at the same time, and correcting the chest displacement of the HIII dummy under the action of the safety belt and safety airbag combined constraint system to obtain a correction result deq-lin(t). According to the HIII dummy chest displacement correction method based on the action of the combined constraint system, the chest displacement measurement value under the safety belt and safety airbag combined system is corrected, the corrected chest displacement value is closer to the injury risk probability of an actual passenger, chest injury of the passenger can be reflected more accurately, and a positive promotion effect is achieved on research and development of passive safety performance of vehicles.

Description

Technical field [0001] The present invention belongs to the field of vehicle collision safety performance, in particular, to a HIII dummy chest displacement correction method based on a combined constraint system. Background technique [0002] Airbags and seat belts are important components in the passive safety configuration of the vehicle, and in the vehicle collision accident, the passenger will inhibit the occupant as the inertia moves to the collision direction, reducing the damage may result in the accident, thus strengthening the occupant. Safety protection. [0003] The car collision test fake person is a special structure with a variety of special materials in accordance with the principles of ergonomics. The most important requirement of the car crash test dummy is to be able to simulate the damage of the human body in the automotive collision process, where the HIII series of dummy is the most commonly used collision dummy in frontal collision tests. The HIII dummy's c...

AI Technical Summary

Problems solved by technology

The sensor is located at the position of the seat belt shoulder belt wearing path. During the collision, the degree of injury to the chest caused by the partial load applied by the seat belt on the chest and the dispersed load applied by the airbag on the chest is different, but the chest displacement of the above-mentioned existing dummy The signal collected by the sensor cannot reflect the difference of this kind of injury, and is quite different from the actual situation, so it cannot truly represent the actual impact of the seat belt and airbag combined restraint system on the dummy's chest displacement

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