Neck structure and design method of crash dummy reflecting the mechanical properties of human neck

Abstract

The invention discloses a collision dummy neck structure reflecting human neck mechanical properties. The collision dummy neck structure is composed of a muscle fixing module and a muscle module. The muscle fixing module is composed of an upper neck ring, a lower neck ring and shoulder rings. The upper neck ring is connected with an upper fundamental dummy neck portion, the lower neck ring is connected with a lower fundamental dummy neck portion, and the shoulder rings are connected with fundamental dummy shoulder portions. The muscle module is composed of springs with different elastic coefficients and comprises two sternocleidomastoid springs, two splenius capitis springs and two trapezius springs, wherein the two ends of each sternocleidomastoid spring are connected with the upper neck ring and the lower neck ring respectively, the two ends of each splenius capitis spring are connected with the upper neck ring and the lower neck ring respectively, and the two ends of each trapezius spring are connected with the corresponding shoulder ring and the lower neck ring. The collision dummy neck structure is applied to the neck portion of a collision dummy, the action of neck muscles on the head and the neck can be effectively achieved, and a higher biosimulation degree is obtained; The invention further discloses a design method of the collision dummy neck structure reflecting the human neck mechanical properties.

Description

technical field [0001] The invention relates to a collision dummy neck structure and a design method reflecting the mechanical characteristics of the neck of a human body, and belongs to the field of automobile collision safety. Background technique [0002] With the rapid development of the automobile industry, automobile safety is becoming more and more important in evaluating the performance of automobiles, especially the safety protection technology of vehicle occupant collision, which has become the core competitive technology and research focus of products in the domestic and foreign automobile markets. However, existing automobiles still have insufficient occupant protection performance, such as the inability to describe fractures, muscle injuries, and craniocerebral injuries in real human beings in traffic accidents. And because it is impossible to reproduce the motion characteristics of the real human body affected by muscles during the collision process, it often o...

AI Technical Summary

Problems solved by technology

This kind of dummy is mostly a static human body model established from the perspective of biomedicine, which lacks the expression of the mechanical properties of muscles during the collision process

Especially the movement of the head and neck, which has a great influence on the injury, is greatly affected by the neck muscles, but this mechanical characteristic cannot be reproduced in the existing dummies

At the same time, for the convenience of manufacture and installation, the neck structure of the existing dummy is quite different from that of the real human body: the neck of the real human body is composed of multiple cervical vertebrae, which can carry out flexible movements, while the neck of the dummy is composed of multiple cervical vertebrae. The cylinder structure is formed by the alternate overlapping of aluminum discs and rubber discs, which limits the neck movement of the dummy to a certain extent.

The difference caused by this structural simplification makes the existing dummy-based design unable to accurately describe the movement and injury of real human bodies in actual traffic accidents

Images