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人体脊柱动力学模型的建立对研究飞行员弹射救生、伞兵跳伞开伞、着陆等脊柱损伤的生物力学以及研究人体脊柱耐受冲击载荷的极限问题都具有重要意义．首先发展了凯恩方程的休斯顿方法，使其可应用于变形体连接的多体系统，并以此理论为依据建立人体整椎脊柱冲击动力学模型，此时考虑脊柱的大位移运动，每个椎骨的变形相对椎间盘的变形小得多，把脊柱看成由刚体（椎骨）和变形体（椎间盘）组成的多体系统．并以大型真人坐姿冲击实验结果进行了拟合，最后得到腰椎间关节刚度系数因子和阻尼系数因子．
The establishment of the human spinal dynamic model is of great significance for studying the biomechanics of pilot injury, parachute parachute parachute, landing and other spinal injuries as well as the study of the limits of the human body’s spinal tolerance shock load. First developed the Kane equation of the Houston method, so that it can be applied to deformable body connected to the multi-body system, and based on this theory to establish the human whole spine impact kinetic model, this time considering the spine of the large displacement movement, each The deformity of the vertebra is much less distorted than the intervertebral disc, treating the spine as a multibody system consisting of a rigid body (vertebra) and a deformable body (disc). The results of large-scale real-life sitting impact test were fitted, and finally the stiffness factor coefficient and damping coefficient factor of lumbar intervertebral joint were obtained.