Vibrations response of sitting and standing human model

الملخص EN

An electrical simulatin of a developed mechanical model of an 80kg human body subjected to vibrations during simuiiug and sitting with and without using the seat belt : has been investigated.

The results have shown that the gain and the resonance frequen¬cy: of abody segmeni depend on the kind of vibrations (horizontal or vertical), the source (steering, ground of both) and on the body posture.

The head di) and the cerc- vical (C.S).

thoracic (Th.S) and lumbar spine (1..S) are effected by horizontal vibra¬tions more than by vertical vibrations.

Conversely, the thorax is affected by vertical vibratios more than by horizontal vibrations, hash of the 1 ovver arm; (L.A).

upper arm:: (U.A) and torso (T) of a- standing humanandXU.A, T) of a sitting human using the seat be it.

is affected by veitical vibrations more than by horizontal vihratins.

The torso of a sitting human is affected by horizontal vibrations more than by vertical \ibra- uons.

The lower and upper arms of a sitting human are affected by horizontal vibra¬tions more than by vertical vibrations coining form the ground and both steering and ground.