Vehicle door trim impacter and method for determining rigidity value of vehicle door trim

Abstract

The invention provides a vehicle door trim impacter and a method for determining a rigidity value of a vehicle door trim. The vehicle door trim impacter is based on the human body profile outline characteristic and comprises a chest area impacter, an abdomen area impacter, a huckle area impacter, a high-pressure air cylinder and a guide rod, wherein the chest area impacter comprises an impact contact surface with the geometrical characteristic of a human body chest profile; the abdomen area impacter comprises an impact contact surface with geometrical characteristic of the human body abdomen profile; the huckle area impacter comprises an impact contact surface with the geometrical characteristic of the human body huckle profile; the guide rod is set into a linear motion output piece of the high-pressure air cylinder; and the tail end of the guide rod is connected with the chest area impacter, the abdomen area impacter or the huckle area impacter. In the method, each impacted area of the trim is impacted by the impacter and kinetic parameters in the impact process can be measured, thereby obtaining the rigidity value of each area of the trim; and the method is used for optimizing the rigidity design of the trim.

Description

technical field [0001] The invention relates to an impactor used in an automobile collision test and a method for determining the stiffness value of a door trim panel. Background technique [0002] Automobile side collision is one of the common types of traffic collision accidents. How to improve the protection performance of vehicle occupants during side collision has been paid more and more attention by automobile manufacturers. When the car has a side collision, the body sheet metal structure first collides and deforms, invades the passenger compartment, and pushes the door trim panel to collide with the occupant's body, causing occupant injury. It can be seen that good occupant protection performance in side collision is not only closely related to the body sheet metal structure and its materials, but also closely related to the stiffness of the door trim panel that is in direct collision contact with the occupant. While designing the body sheet metal structure, designi...

AI Technical Summary

Problems solved by technology

[0004] Due to the complex structure of the door trim panel, it corresponds to different areas when it collides with the body of the occupant in the car. At present, automobile manufacturers do not have a set of reasonable impactors for impact testing the stiffness of the door trim panel. Accurately evaluate and optimize the stiffness of the door trim panels of different models, resulting in an unreasonable design of the trim panel stiffness, which makes it difficult to greatly improve the occupant protection performance in the event of a side collision

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