A Study of Vertical Vibration Transmissibility by the Human Body

Abstract:

The transmission of longitudinal vibration (generated by the vibrating platform Brüel & Kjær 4827) in the whole body of ten subjects was investigated. Altogether 200 individual tests were made. Vibration was measured with 356A16 PCB Piezotronics triaxial accelerometers fixed to the toes, ankles, lumbar, cervical, fingers, elbow and shoulder. Vibrations were analyzed with a multiple acquisition vibrations system NetdB. Data were processed using dBFA Suite. Vibration time was 1min and frequency range was between 10-40Hz, because the low frequencies are the resonance frequencies for the human body. Body vibration transmissibility was determined by the ratio of root mean square acceleration signal from accelerometer by the root mean square of acceleration signal from the vibrating platform. It was found that the accelerations at the lumbar level are more attenuated than the accelerations at the ankle level.

• Periodical: Applied Mechanics and Materials (Volumes 325-326)
• Pages: 152-157
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.325-326.152
• Online since: June 2013
• Authors: Mihaela Picu
• Keywords: Vibration Syndrome, Vibration Transmissibility, Vibration Transmission, Whole Body Vibration

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