An evaluation of the methods for deriving a representative biodynamic response of the human whole-body system to vibration.
Dong-RG; McDowell-TW; Welcome-DE; Wu-JZ
Proceedings of the 4th International Conference on Whole Body Vibration Injuries, June 2 - 4, 2009, Montreal, Canada. Montréal, Québec, Canada: Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), 2009 Jun; :35-36
Theoretically, the reliability of the mean property-based response depends on the validity of the model used to describe the biodynamic properties of the system. Assuming the model used in this study is acceptable for representing the basic biodynamic properties of the whole-body system, this study found that the arithmetically averaged response could be more than 20% below that derived from the property-based averaging method, depending on the specific combination of subjects. The potential errors of the response-based averaging method generally depend on the range of the subjects' natural frequencies and the number of participating subjects. A practical and effective approach for controlling the potential error of the arithmetical average method is to group the subjects in terms of their body weight or stature and to include a sufficient number of subjects in each group. While more demanding than the response-based method, the property-based deriving method with a validated model can be generally used to obtain the representative response.
Models; Mathematical-models; Computer-models; Simulation-methods; Vibration
Ren G. Dong, Engineering and Control Techology Branch, National lnstititute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, West Virginia 26505, USA
Abstract; Conference/Symposia Proceedings
Proceedings of the 4th International Conference on Whole Body Vibration Injuries, June 2 - 4, 2009, Montreal, Canada.