Six-year-old child pedestrian natural walking posture finite element model suitable for Euro NCAP and construction method and application thereof

Abstract

The invention discloses a six-year-old child pedestrian natural walking posture finite element model suitable for Euro NCAP and provided with a detailed anatomical structure and a construction methodand application thereof. Human body CT scanning information of six-year-old children is subjected to three-dimensional geometric reconstruction, and a geometric model meeting the anthropometry standard is obtained; firstly, a human body local finite element model is constructed; a six-year-old child pedestrian whole standing posture finite element model with a detailed anatomical structure is constructed; a finite element model of the natural walking posture of the pedestrian of the six-year-old child is constructed, wherein the model has detailed physiological anatomy structural characteristics of six-year-old children, and the angles of all joints meet the requirements of an Euro NCAP technical announcement Pedestrian Human Model Certification (TB024) for a pedestrian model of the six-year-old children. The invention further provides a construction system of the model. The model constructed by the invention can be used for CAE simulation calculation in new vehicle evaluation, and hasa wide application prospect.

Description

technical field [0001] The invention relates to the technical field of human computer numerical models, in particular to a finite element model of natural walking posture of six-year-old children suitable for Euro NCAP and its construction method and application. Background technique [0002] Children and pedestrians are the most vulnerable group on the road. When they collide with cars, they have a high rate of death and disability; they cause huge losses to families and society. In order to reduce the casualty rate of pedestrians and better protect pedestrians, it is necessary to study in detail the causes and mechanisms of damage to internal tissues, organs and bones of the human body during collisions. Restricted by ethics and children's cadaver experiments, the digital child human body model is a necessary means to study children's injuries. However, the currently developed rigid body model of a six-year-old child and the finite element model of a six-year-old pedestria...

AI Technical Summary

Problems solved by technology

Compared with adults, children are in the developmental stage, and children have their own unique anatomical structures, such as bone seams in children's heads, children have growth plates, etc., so children are not miniature versions of adults, and they are six years old through scaling and deformation The finite element model of children's pedestrians has great limitations in biogeometric simulation

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