EVALUATION OF WHOLE-BODY VIBRATIONS AND COMFORT STATE OF TRACTOR DRIVER FOR DIFFERENT TYPES OF TERRAIN AND SPEEDS
The long exposure of the human body to mechanical vibrations is a risk factor in terms of health and comfort of the driver being influenced by biomechanical variables that determine the intensity of vibration, frequency and amplitude. The aim of this study is to carry out an experimental investigation to assess the comfort state associated with different types of terrain and traffic speeds of a tractor. The levels of vibration produced during the experimental tests are evaluated using 3 tri-axial accelerometers mounted on driver's seat, on back seat at the spine level and on the floor of tractor cab, under the driver's support leg. The collected data are processed with the help of Vats Nex Gen Ergonomics software, and the methods for measuring the whole-body vibrations is based on the international standard ISO 2631-1.
Grifﬁn, M.J., Handbook of Human Vibration, Academic Press, London, 1990.
Nawayseh, N., Grifﬁn, M.J., Power absorbed during whole-body fore-and-aft vibration: effects of sitting posture, backrest, and footrest, J. Sound Vib. 331, 252-262, 2012.
Basri, B., Grifﬁn, M.J., Equivalent comfort contours for vertical seat vibration: effect of vibration magnitude and backrest inclination, Ergonomics 55 (8), pp. 909-922, 2012.
Basri, B., Grifﬁn, M.J., Predicting discomfort from whole-body vertical vibra tion when sitting with an inclined backrest, Appl. Ergon. 44 (3), pp. 423-434, 2013.
Gallais, L., Low Back Pain and Risk Factors for Low Back Pain in Car Drivers, University of Southampton, Institute of Sound and Vibration Research, Doctoral Thesis, 2008.
International Organization for Standardization, 1997. International Standard 2631 1: 1997 Mechanical Vibration and Shock-evaluation of Human Exposure to Whole-Body Vibration. Part 1: General Requirements,.
Kumar, A., Mahajan P., Mohan D., Varghese M., Tractor Vibration Severity and Driver Health: a Study from Rural India, J. agric. Engng Res., 80 (4), pp. 313-328, 2001.
Aisyah, S., Adam and Nawal A., Jalil A., Vertical Suspension Seat Transmissibility and SEAT Values for Seated Person Exposed to Whole-body Vibration in Agricultural Tractor
Preliminary Study, Procedia Engineering 170, pp. 435 – 442, 2017.
Kabir, S. H., Chung, S. O., et al. Measurement and evaluation of whole body vibration of agricultural tractor operator, Int J Agric & Biol Eng, 10 (1), pp. 248-255, 2017.
Velmurugan, P., et al., Influence of road surfaces on whole body vibration for suspended cabin tractor semitrailer drivers, Journal of low frequency noise, vibration and active control, pp. 75-84, 2012.
Eger, T. R., et al., Influence of Driving Speed, Terrain, Seat Performance and Ride Control on Predicted Health Risk Based on ISO 2631-1 and EU Directive 2002/44/EC, Journal of low frequency noise, vibration and active control, pp. 291-312, 2011.
Loutridis, S., Gialamas, Th., et al., A study on the effect of electronic engine speed regulator on agricultural tractor ride vibration behavior, Journal of Terramechanics, 48, pp. 139-147, 2011.
Wijaya, A. R., Jönsson, P., Johansson, O., The Effect of Seat Design on Vibration Comfort, International Journal of Occupational Safety and Ergonomics, 9(2), pp. 193-210, 2003.
Cutini, M., Brambilla, M., Bisaglia, C., Whole-Body Vibration in Farming: Background Document for Creating a Simplified Procedure to Determine Agricultural Tractor Vibration Comfort, Agriculture, 2017.
Mansfield, N., J., Atkinson, S., Payne, G., Effect of increasing measurement duration on ‘accuracy’ of whole-body vibration field measurements, 38th United Kingdom Conference on Human Response to Vibration, Institute of Naval Medicine, Alverstoke, Gosport, England, 17 -19 September 2003.
Oncescu, T.A., Petcu, A. I., Experimental study of the influence of road surface and car speed on the whole body vibrations, Proceedings 1st International Conference on Advanced Research in Engineering, 1, pp. 115-120 Craiova, 2020.
Velmurugan, P., Kumaraswamidhas, L.A., Sankaranarayanasamy, K., Influence of road surfaces on whole body vibration for suspended cabin tractor semitrailer drivers, Journal of low frequency noise, Vibration and Active Control, 31 (2), pp.75– 84, 2012
Nawayseh, N., Effect of the seating condition on the transmission of vibration through the seat pan and backrest, International Journal of Industrial Ergonomics, 45, pp. 82-90, 2015.
VATS™ (Vibration Analysis Tool Set), http://www.nexgenergo.com/ergonomics/vats.html
User Manual, Biometrics Ltd, http://www.biometricsltd.com
Tarnita, D., Wearable sensors used for human gait analysis, Rom J Morphol Embryol, 57(2), pp 373-382, 2016.
Tarnita, D., Pisla, D., Geonea, I., et al., Static and Dynamic Analysis of Osteoarthritic and Orthotic Human Knee, J Bionic Eng, 16, pp. 514-525, 2019.
Gherman, B., Birlescu, I., Plitea, N., Carbone, G., Tarnita, D., Pisla, D., On the singularity-free workspace of a parallel robot for lower-limb rehabilitation, Proceedings of the Romanian Academy, 20(4), pp. 383-391, 2019.
Tarnita, D., Catana, M., Dumitru, N., Tarnita, D.N., Design and Simulation of an Orthotic Device for Patients with Osteoarthritis. New Trends in Medical and Service Robots, Springer Publishing House, pp. 61-77, 2016.
Vaida, C., Birlescu, I., Pisla, A., Ulinici, I., Tarnita, D., Carbone, G., Pisla, D., Systematic Design of a Parallel Robotic System for Lower Limb Rehabilitation, IEEE Access, 8, pp. 34522-34537, 2020.
Tarnita, D., et al., Applications of Nonlinear Dynamics to Human knee movement on Plane & Inclined Treadmill., New Trends in Medical &Service Robots, Mechanisms and Machine Science, 39, pp. 59-73, 2016.
Tarnita, D., Marghitu, D.B., Nonlinear dynamics of normal and osteoarthritic human knee, Proceedings of the Romanian Academy, series A, 18(4), pp. 353-360, 2017.
- There are currently no refbacks.