Study on Seated Human Model Based on Human Body Vibration Testing
In order to accurately simulate the vibration characteristic of the human body,on the basis ofthe principle of multi-body dynamics,the human body is simplified into a 12-degree-of-freedom multi-rigid model with 4 lumped masses of the head,upper torso,lower torso and leg-buttocks.In the model,the lumbar muscles between the upper torso,lower torso and leg-buttocks are considered,and each part is connected by linear equivalent spring and damping.With the help of vibration test bench,the low frequency vibration test of sitting posture is carried out on 8 volunteers,and the vibration transfer characteristic curves of human body under vertical excitation(0-20 Hz)and longitudinal excitation(0-15 Hz)are obtained.The 48 stiffness and damping model parameters that simulate the dynamic characteristics of the human body in the model are determined by using the adaptive simulated annealing algorithm to identify the parameters of the seat-head vibration transfer characteristic curve of vibration test.The results show that the simulation curve of the multi-rigid dynamic human model is consistent with the experimental curve,and the model can accurately reflect the vibration transfer characteristics of human body.
human body modelwaist muscleshuman body vibration testingparametric identification
万方数据
维普
