Analysis and modeling of ride comfort on biaxial vibration in a standing posture

In this paper, human dynamic characteristic under vibration of two axes was clarified with the standing position posture. Vibration acceleration of each part grade of the head, the shoulder, the waist, or a knee was measured with the standing posture. Vibration frequency is 1-20 [Hz] with three kind of biaxial sine wave vibrations including 0, 45, and 90deg of phase difference. I had unpleasant frequency and the unpleasant part answered from a questionnaire. The dimension of each part of a human body was measured, and a subject's physical characteristic was searched for. Also in the seating posture. I searched them like the case of a standing posture. The action of the human body in a seating posture was modeled. As result, the action of the body and a head is not interlocking. Moreover, in a low frequency, the action of the waist or a knee is larger than the lateral direction to the acceleration of the direction of order. The analysis model expressed the action of a human body well.