Abstract
We will have much experience of human mechanical injury when we live together with various robots in daily life. When our bodies were given same energies of mechanical impacts by robots, parts of our bodies had serious damages in proportion as proper characteristic of organs. And our organs had proper waveforms of impacts and we need proper criterions for proper organs. We proposed the analytical models of human falling and hypothesis of the rotational & free falling of human bodies, and estimated the grade of organs' damages, head, chest, abdomen, and femoral region. Our serious damages of falling, fracture of head, chest and lacerate wound of abdominal organs were occurred by mechanical impacts. Especially head injury was estimated by HIC, however, which was not he able to apply for the other organs, and used proper criterion for various organic damages. And We knew, antagonist muscles, biceps femoral m. & rectus femoral m. worked together and had oscillation motions, in order to absorb impacts as if antagonist muscles were made to be formed as a kind of bio visco-elasticity.
