Head motion is a key determinant of motion comfort and differs substantially from seat motion due to seat and body compliance and dynamic postural stabilization. This paper compares different human body model fidelities to transmit seat accelerations to the head for the assessment of motion comfort through simulations. Six-degree of freedom dynamics were analyzed using frequency response functions derived from an advanced human model (AHM), a computationally efficient human model (EHM) and experimental studies. Simulations of dynamic driving show that human models strongly affected the predicted ride comfort (increased up to a factor 3). Furthermore, they modestly affected sickness using the available filters from the literature and ISO-2631 (increased up to 30%), but more strongly affected sickness predicted by the subjective vertical conflict (SVC) model (increased up to 70%).

翻译：摘要：头部运动是运动舒适性的关键决定因素，但由于座椅和身体的柔顺性以及动态姿势稳定作用，头部运动与座椅运动存在显著差异。本文比较了不同详细程度的人体模型在将座椅加速度传递至头部时对运动舒适性仿真评估的影响。基于高级人体模型（AHM）、计算高效人体模型（EHM）及实验研究，通过频率响应函数分析了六自由度动力学特性。动态驾驶仿真表明，人体模型显著影响预测的乘坐舒适性（差异最高达3倍）。此外，依据现有文献滤波器和ISO-2631标准，各模型对晕动症预测的影响较小（差异最高达30%），而主观垂直冲突（SVC）模型对晕动症预测的影响更为显著（差异最高达70%）。