This paper describes the validation of a multi-body sitting human body model subjected to high amplitude acceleration exposure containing multiple shocks. The model consists of a 17-segment system of bodies representing the bodies of the human frame. The bodies are connected by springs and dampers simulating the human joints. The model maybe validated by comparing computed head transmissibility response with experimentally recorded data. A young 59 kg female was used as the experimental subject. The subject was exposed to vertical random vibration in the frequency range: 0.5-20 Hz at a magnitude of 1.8g r.m.s. with isolated single sine wave shocks occurred once every 10-20 seconds. The shocks had peak-topeak amplitude of 2g. The principal resonance frequency of the vertical seat to head transmissibility for both the experimental model and multi-body model were found to be at 3 Hz. The second resonance frequency of both model were at 7-10 Hz. The third resonance frequency of experimental model was at 10-15 Hz.
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