Control of hand-arm vibrations produced by operating vibrating portable tools: considerations of the human interface and biodynamic behaviors Abstract The vibration produced by some portable tools leads to various upper limb disorders, collectively called “hand-arm vibration syndrome”. The aim of this study was to establish foundations for the development of models that can be used to effectively reproduce the dynamic behaviour of a “tool – hand-arm” system by taking into account the effect of variations in the gripping and thrust forces applied to the handle, the subject’s posture, the configuration of the handle, as well as the amplitude of the vibrations. This study characterized the effect of these different parameters on the hand-arm system’s biodynamic response and established mathematical relationships between the gripping and thrust forces and the contact force at the hand-handle interface. The results will be used to define the optimum conditions for using portable tools in order to reduce hand-arm vibration, and to develop analytical instruments that will serve as a basis in designing portable tools with less risk of producing hand-arm vibration syndrome. Produced Under this Project Scientific Reports Controlling hand-arm vibrations produced by the operation of vibrating portable tools Research Report: R-467 Scientific Publications Influence of handle size and coupling forces on the biodynamic response of the hand-arm systemPierre Marcotte, Aldien Y., Boileau P.-É., Rakheja S., Boutin J.Source : in United Kingdom Conference on Human Response to Vibration (38th : September 17-19, 2003 : Gosport, England), 2003Effect of handle size and hand–handle contact force on the biodynamic response of the hand–arm system under zh-axis vibrationPierre Marcotte, Aldien Y., Boileau P.-É., Rakheja S., Boutin J.Source : Journal of Sound and Vibration, vol. 283, no 3-5, 2005, p. 1071-1091Influence of hand forces and handle size on human hand-arm vibration absorbed powerAldien Y., Pierre Marcotte, Rakheja S., Boileau P.-É., Boutin J.Source : in Proceedings of the 10th International Conference on Hand-Arm Vibration Conference (10th : June 7-11, 2004 : Las Vegas, Nevada) 2004Influence of handle size and shape on the biodynamic response of the hand-arm systemPierre Marcotte, Aldien Y., Boileau P.-É., Rakheja S., Boutin J.Source : in Proceedings of the 10th International Conference on Hand-Arm Vibration, (10th : June 7-11, 2004 : Las Vegas, Nevada) 2004Contact pressure distribution at hand-handle interface: role of hand forces and handle sizeAldien Y., Welcome D., Rakheja S., Dong R., Boileau P.-É.Source : International Journal of Industrial Ergonomics, vol. 35, no 3, 2005, p. 267-286Influence of hand forces and handle size on power absorption of the human hand-arm exposed to zh-axis vibration Aldien Y., Pierre Marcotte, Rakheja S., Boileau P.-É.Source : Journal of Sound and Vibration, vol. 290, no 3-5, 2006, p. 1015-1039Mechanical impedance and absorbed power of hand-arm under xh-axis vibration and role of hand forces and postureAldien Y., Pierre Marcotte, Rakheja S., Boileau P.-É.Source : Industrial Health, vol. 43, no 3, 2005, p. 495-508Influence of hand-arm posture and hand forces on the biodynamic response of the human hand-arm exposed to zh axis vibrationAldien Y., Pierre Marcotte, Rakheja S., Boileau P.-É.Source : in United Kingdom Conference on Human Response to Vibration (40th : September 13-15, 2005 : Liverpool, England), 2005Influence of hand-arm posture on biodynamic response of the human hand-arm exposed to zh-axis vibrationAldien Y., Pierre Marcotte, Rakheja S., Boileau P.-É.Source : International Journal of Industrial Ergonomics, vol. 36, no 1, 2006, p. 45-59Hand forces-dependent modeling of the hand-arm under zh axis vibrationAldien Y., Rakheja S., Pierre Marcotte, Boileau P.-É.Source : in Proceedings of the First American Conference on Human Vibration, (1st : June 5-7, 2006 : Morgantown, U.S.A.), 2006, p. 40-41, (http://www.cdc.gov/niosh/docs/2006-140/pdfs/2006-140.pdf)Modelling the contributions of handle dynamics on the biodynamic response of the human hand-arm system Pierre Marcotte, Adewusi S., Boutin J., Hugues Nélisse, Rakheja S., Boileau P.-É.Source : in Proceedings 11th International Conference on Hand-Arm Vibration (11th : June 3-7, 2007 : Bologne, Italie), Bovenzi, M.; Peretti, A.; Nataletti, P.: Moschioni, G. (eds), 2007, p. 321-326On the resonant frequencies of the human hand-arm systemAdewusi S., Rakheja S., Boileau P.-É., Pierre Marcotte, Boutin J.Source : in Proceedings 11th International Conference on Hand-Arm Vibration (11th : June 3-7, 2007 : Bologne, Italie), Bovenzi, M.; Peretti, A.; Nataletti, P.: Moschioni, G. (eds), 2007, p. 341-348On the discrepancies in the reported human hand-arm impedance at higher frequenciesAdewusi S. A., Rakheja S., Pierre Marcotte, Boileau P.-É.Source : International Journal of Industrial Ergonomics, vol. 38, no 9-10, 2008, p. 703-714Comments on «A discussion on comparing alternative measures with frequency-weighted accelerations defined in ISO Standards»Pierre MarcotteSource : Journal of Sound and Vibration, vol. 317, no 3-5, 2008, p. 1051-1056Posture effect on vibration transmissibility of the hand-armAdewusi S. A., Rakheja S., Pierre Marcotte, Boileau P.-É.Source : in Proceedings of the 2nd American Conference on Human Vibration / ACHV, (2nd : June 3-6, 2008 : Chicago, U.S.A.), CD-ROM, 2008A method for analyzing absorbed power distribution in the hand and arm substructures when operating vibrating toolsDong J. H., Dong R. G., Rakheja S., Welcome D. E., McDowell T. W., Wu J. Z.Source : Journal of Sound and Vibration, vol. 311, no 3-5, 2008, p. 1286-1304Vibration transmissibility characteristics of the human hand-arm system under different postures, hand forces and excitation levelsAdewusi S. A., Rakheja S., Pierre Marcotte, Boutin J.Source : Journal of Sound and Vibration, vol. 329, no. 14, 2010, p. 2953-2971Distributed biodynamic characteristics of the human hand-arm system coupled with vibrating handles and power toolsAdewusi S.Source : Thèse de doctorat, Montréal, Université Concordia, 2009Distributed vibration power absorption of the human hand-arm system in different postures coupled with vibrating handle and power toolsAdewusi S., Rakheja S., Pierre Marcotte, Thomas M.Source : International Journal of Industrial Ergonomics, vol. 43, no 4, 2013, p. 363-374Biomechanical model of the hand-arm system to simulate distributed biodynamic responsesAdewusi S., Rakheja S., Pierre MarcotteSource : in American Conference on Human Vibration (3rd : June 1-4, 2010 : Iowa, USA), 2010, (http://www.uiowa.edu/~confinst/achv/Abstracts-full.pdf)Estimation of the biodynamic responses distributed at fingers and palm based on the total response of the hand-arm systemDong R. G., Rakheja S., McDowell T. W., Welcome D. E., Wu J. Z.Source : International Journal of Industrial Ergonomics, vol. 40, no 4, 2010, p. 425-436Mechanical impedances distributed at the fingers and palm of the human hand subjected to 3-D vibrationsDong R. G., Welcome D. E., McDowell T. W., Xu X. S., Wu J. Z., Rakheja S.Source : in American Conference on Human Vibration (3rd : June 1-4, 2010 : Iowa, USA), 2010Analyses of distributed absorbed power responses on the human hand-arm system in the bent- and extended-arm posturesAdewusi S., Rakheja S., Pierre MarcotteSource : in Proceedings of the Twelfth International Conference on Hand-Arm Vbration/Douzième congrès international sur les vibrations mains-bras, (12th : June 13-17, 2011, Ottawa, Canada). Canadian Acoustics / Acoustique canadienne, vol. 39, no 2, 2011, p. 50-51Biomechanical models of the human hand-arm to simulate distributed biodynamic responses for different posturesAdewusi S. A., Rakheja S., Pierre MarcotteSource : International Journal of Industrial Ergonomics, vol. 42, no 2, 2012, p. 249-260 Other Project(s) You May be Interested in Development of a methodology for assessing the performance of anti-vibration gloves in reducing vibrations while considering dexteriy and grip strength Additional Information Type: Project Number: 0099-2990 Status: Completed Year of completion: 2006 Research Field: Mechanical and Physical Risk Prevention Team: Paul-Émile Boileau (IRSST)Subhash Rakheja (Université Concordia)Jérôme Boutin (IRSST)Pierre Marcotte (IRSST)Rama B. Bhat (Université Concordia)Ion Stiharu (Université Concordia)J. Dargahi (Université Concordia)