Journal of Advanced Research ( IF 11.4 ) Pub Date : 2020-06-17 , DOI: 10.1016/j.jare.2020.06.010 S Sivasankari 1 , Venkatesh Balasubramanian 1
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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.
中文翻译：
乘员碰撞状态参数对正面碰撞时腰椎损伤的影响
介绍
开发了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。
目标
本研究评估了乘员碰撞状态参数（例如坠落高度、乘员坐姿（乘员姿势角度）和上身质量）对正面碰撞期间腰椎损伤风险的影响。
方法
该参数评估利用响应面方法 (RSM) 进行。ANOVA 用于测试参数的显着性。
结果
观察到 3547 N 的较高轴向力与 1500 mm 的较高下落距离。类似地，对于相同的下降条件，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会导致正面碰撞过程中腰椎损伤的风险。其中，跌落高度和乘员姿势角是判断乘员腰椎损伤最重要的参数。据观察，损伤标准与座椅的姿势角度和跌落高度成正比。
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