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正面碰撞中乘员碰撞状态参数对腰椎损伤的影响。

Influence of occupant collision state parameters on the lumbar spinal injury during frontal crash.

作者信息

Sivasankari S, Balasubramanian Venkatesh

机构信息

RBG Labs, Department of Engineering Design, IIT Madras, Chennai 600036, India.

出版信息

J Adv Res. 2020 Jun 17;28:17-26. doi: 10.1016/j.jare.2020.06.010. eCollection 2021 Feb.

DOI:10.1016/j.jare.2020.06.010
PMID:33364041
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7753953/
Abstract

INTRODUCTION

Developed a detailed finite element model of spine and validated with the experimental or cadaveric tests to gain insight on occupant safety.

OBJECTIVES

This study evaluates the influence of occupant collision state parameters such as height of the drop, occupant seating posture (occupant posture angle) and mass of the upper body on the risk of lumbar spinal injury during a frontal crash.

METHODS

This parametric evaluation utilizing response surface methodology (RSM) performed. ANOVA was used to test the significance of parameters.

RESULTS

Higher axial force of 3547 N is observed with higher dropping distance of 1500 mm. Similarly, higher strain and energy absorption were observed for the same dropping condition respectively.

CONCLUSION

The result shows that all the factors considered in the experiment contribute to the risk of spinal lumbar injury during the frontal crash. Among all, height of the drop and the occupant posture angle are the most significant parameters in determining the lumbar spinal injury of occupant. It is observed that the injury criteria are directly proportional to the posture angle of the seat and height of drop.

摘要

引言

开发了一个详细的脊柱有限元模型，并通过实验或尸体测试进行验证，以深入了解乘员安全情况。

目的

本研究评估乘员碰撞状态参数，如跌落高度、乘员坐姿（乘员姿势角度）和上半身质量对正面碰撞时腰椎损伤风险的影响。

方法

采用响应面法（RSM）进行此参数评估。使用方差分析来检验参数的显著性。

结果

在跌落距离为1500毫米时，观察到轴向力更高，为3547牛。同样，在相同跌落条件下，分别观察到更高的应变和能量吸收。

结论

结果表明，实验中考虑的所有因素都导致正面碰撞时腰椎损伤的风险。其中，跌落高度和乘员姿势角度是确定乘员腰椎损伤的最重要参数。观察到损伤标准与座椅姿势角度和跌落高度成正比。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/cad1e158dbba/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/76c640f1d6e8/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/8bd88903d981/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/12a77d28b742/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/11cdb8f372a2/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/326004f5452f/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/fa4ae06f6950/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/cad1e158dbba/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/76c640f1d6e8/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/8bd88903d981/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/12a77d28b742/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/11cdb8f372a2/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/326004f5452f/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/fa4ae06f6950/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45e3/7753953/cad1e158dbba/gr6.jpg

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