正面碰撞下6岁儿童人体生物力学模型运动轨迹验证

摘要

为深入研究儿童在正面碰撞中的运动轨迹,验证所建6岁儿童生物力学人体模型在运动轨迹上的合理性,采用MADYMO库中的6岁Facet人体模型作为对标模型,通过正面碰撞仿真获取对标模型与验证模型在两点式安全带和三点式安全带约束下的运动轨迹.提出运动位移误差与运动趋势误差分析法,从运动过程和运动结果两方面评价两个人体模型脊椎运动的相似度.结果表明,验证模型在运动位移量与运动趋势上都与对标模型充分相似,且足够准确,可用于进一步的研究.%In order to study the trajectory of children during frontal crash and verify the rationality of 6-year-old biomechanical human model in trajectory,the 6-year-old Facet human model in MADYMO is used as the benchmark model,and the trajectories of benchmark model and biomechanical human model to be verified(abbre-viated as verification model hereafter) under the restraints of two-point and three point safety belts are acquired by frontal crash simulation.Analysis methods of motion displacement error and motion trend error are proposed to evalu-ate the similarity of spinal movements with two human models from the perspectives of both process and outcome. Results show that verification model is sufficiently similar to the benchmark model in motion displacement and mo-tion trend,and is accurate enough for further study.