Abstract
India is known as the largest tractor manufacturer in the world. There are many pieces of old generation equipment that are used by some farmers with less land to cultivate land but found to be more time-consuming for large-scale agricultural lands. For long hours of operations in the field of agriculture, proper ergonomics and effective design of seats play a vital role in reducing the effect of vibration on human subjects. There are a number of ways discovered to deal with this problem; either it is the improvements done in the suspension system of tractors, improvements in its seating comfort and sitting postures, etc. Seating comfort is one of the main factors that reduce the effect of vibrations during agriculture operations. Seating comfort directly deals with the material of cushions of seat pan and backrest, and it is necessary to use good quality cushions to increase the level of comfort in vehicles. In the current study, a comparative study of different cushion materials used for tractor seats has been analyzed and discussed in concern of reducing the effect of the vibration on tractor driver using FEM. A 3D CAD model of the human subject and tractor seat has been modeled using anthropometric data and reverse engineering. It has been observed that the difference is lower in the case of synthetic rubber foam and higher in the case of polyurethane foam. In the current study, it has been observed that the minimum value of transmissibility is 0.45 which is obtained in the analysis of coir-based composite cushion at 1 Hz frequency, whereas in the experimental study the minimum observed value of transmissibility is 0.40. The results of the current study were found to be in good correlation with the results of the existing literature.
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References
C.R. Mehta, V.K. Tewari, Vibrational characteristics of tractor seat cushion materials and ride comfort. J. Low Freq. Noise Vib. Active Control 21(2), 77–85 (2002)
M. Makhsous, R. Hendrix, Z. Crowther, E. Nam, F. Lin, Reducing whole-body vibration and musculoskeletal injury with a new car seat design. Ergonomics 48(9), 1183–1199 (2005). https://doi.org/10.1080/00140130500226903
K. Rohit, K. Sachin, S. Ishbir, Harmonic response of human subject in sitting posture using FEM analysis Rohit. Indian J. Sci. Technol. 29, 1–6 (2020)
M. Grujicic, B. Pandurangan, G. Arakere, W.C. Bell, T. He, X. Xie, Seat-cushion and soft-tissue material modeling and a finite element investigation of the seating comfort for passenger-vehicle occupants. Mater. Des. 30(10), 4273–4285 (2009). https://doi.org/10.1016/j.matdes.2009.04.028
J. Moon, T.K. Sinha, S.B. Kwak, J.U. Ha, J.S. Oh, Study on seating comfort of polyurethane. Int. J. Auto. Technol. 21(5), 1089–1095 (2020). https://doi.org/10.1007/s12239
J.O. Akindoyo, M.D.H. Beg, S. Ghazali, M.R. Islam, N. Jeyaratnam, A.R. Yuvaraj, Polyurethane types, synthesis and applications – a review. RSC Adv. 6, 114453–114482 (2016). https://doi.org/10.1039/C6RA14525F
A. Kausar, Polyurethane composite foams in high- performance applications: a review. Polym. Plast. Technol. Eng. (2017). https://doi.org/10.1080/03602559.2017.1329433
M. Bovenzi, A. Betta, Low-back disorders in agricultural tractor drivers exposed to whole-body vibration and postural stress. Appl. Ergon. 25(4), 231–241 (1994). https://doi.org/10.1016/0003-6870(94)90004-3
R. Kumar, S. Kalsi, I. Singh, Vibration effect on human subject in different postures using 4-layered CAD model. Int. J. Innov. Technol. Explor. Eng. 9(7), 168–174 (2020). https://doi.org/10.35940/ijitee.g5104.059720
P. Paramita, S.S. Mahapatra, International journal of industrial ergonomics A fi nite element approach for analyzing the effect of cushion type and thickness on pressure ulcer. Int. J. Ind. Ergon. 44(4), 499–509 (2014). https://doi.org/10.1016/j.ergon.2014.03.003
M. Li, X. Zhou, Z. Wu, J. Zhang, Cushion stiffness of upholstered wooden seat foundations when subjected to human sitting forces. BioResources 13, 6542–6554 (2018)
C.R. Mehta, V.K. Tewari, Real time characteristics of tractor seat cushion materials. J. Agric. Eng. Res. 80(3), 235–243 (2001). https://doi.org/10.1006/jaer.2001.0737
V.K. Tewari, N. Prasad, Optimum seat pan and back-rest parameters for a comfortable tractor seat. Ergonomics 43(2), 167–186 (2000). https://doi.org/10.1080/001401300184549
I. Hostens, K. Deprez, H. Ramon, An improved design of air suspension for seats of mobile agricultural machines. J. Sound Vib. 276(1–2), 141–156 (2004). https://doi.org/10.1016/j.jsv.2003.07.018
F. B. A. Veloso, G. Esteves, S. Silva, C. Ferreira, Biomechanics modeling of human musculoskeltal system using ADAMS multibody dynamics package 2006
P. Servadio, A. Marsili, N.P. Belfiore, Analysis of driving seat vibrations in high forward speed tractors. Biosyst. Eng. 97(2), 171–180 (2007). https://doi.org/10.1016/j.biosystemseng.2007.03.004
M. Kubo, F. Terauchi, H. Aoki, Two vibration modes of a human body sitting on a car seat-the relationship between riding discomfort affected by the material properties of the seat cushion and the two vibration modes, in Lecture Notes in Computer Science (including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). ed. by V.G. Duffy (Springer, Berlin, 2007), pp. 894–903
V.K. Tewari, R. Ailavadi, K.N. Dewangan, S. Sharangi, Rationalized database of Indian agricultural workers for equipment design. Int. Comm. Agric. Eng. CIGR Comm. Int. du Genie Rural E-J. 9(1), 1–12 (2007)
K. K. Jain, A. K. Shrivastava, and C. R. Mehta, Analysis of Selected Tractor Seats for Seating Dimensions in Laboratory. Agric. Eng. Int. CIGR J., X: 1–10, 2008.
Z. Khaksar, H. Ahmadi, S.S. Mohtasebi, whole body vibration analysis of tractor operators using power spectral density. J. Mech. Eng. Technol. 1, 6–12 (2013). https://doi.org/10.18005/jmet0101002
E. Assessment, O. F. The, R. Comfort, and O. F. Farm, DETC2013–12912 Experimental assessment of the ride comfort of farm TRACTORS,” pp. 1–11, 2017
H.P.W. Jayasuriya, K. Sangpradit, Dynamic performance and ride comfort evaluation of the seat suspension system in a small agricultural tractor to attenuate low-frequency vibration transmission. Agric. Eng. Int. CIGR J. 16(1), 207–216 (2014)
O.L. Kolekar, J.M. Potekar, P.A. Munde, O.L. Kolekar, J.M. Potekar, P.A. Munde, ergonomic improvement in operator seat and controls of small tractor. Int. Res. Eng. Tech. (2014). https://doi.org/10.15623/ijret.2014.0305071
P.K. Kiran, Effect of air cushion seating in passenger car on different road conditions. Indian J. Sci. Technol. 13(10), 1224–1231 (2020). https://doi.org/10.17485/ijst/2020/v13i10/150099
A. Christ et al., The virtual family - development of surface-based anatomical models of two adults and two children for dosimetric simulations. Phys. Med. Biol. (2010). https://doi.org/10.1088/0031-9155/55/2/N01
A. Singh, I. Singh, S. Kalsi, Transmissibility evaluation of whole-body vibration using three-layer human CAD model. J. Inst. Eng. Ser. C 101(3), 595–602 (2020). https://doi.org/10.1007/s40032-020-00559-6
B. Chaurasia, Human anatomy regional and applied dissection and clinical. J. Chem. Inf. Model. 53(9), 1689–1699 (2013)
R.C. Dong, L. He, W. Du, Z.K. Cao, Z.L. Huang, Effect of sitting posture and seat on biodynamic responses of internal human body simulated by finite element modeling of body-seat system. J Sound Vib 438, 543–554 (2019). https://doi.org/10.1016/j.jsv.2018.09.012
C.R. Mehta, V.K. Tewari, Damping characteristics of seat cushion materials for tractor ride comfort. J. Terramech. 47(6), 401–406 (2010). https://doi.org/10.1016/j.jterra.2009.11.001
A. Singh, L.P. Singh, S. Singh, H. Singh, C. Prakash, Investigation of occupational whole-body vibration exposure among Indian tractor drivers. Int. J. Hum. Factors Ergon. 5(2), 151–165 (2018). https://doi.org/10.1504/IJHFE.2018.092240
S. Kitazaki, M.J. Griffin, A modal analysis of whole-body vertical vibration, using a finite element model of the human body. J. Sound Vib. 200(1), 83–103 (1997). https://doi.org/10.1006/jsvi.1996.0674
ISO 2631-1, “International Standard Iso 2631-1,” vol. 1997, pp. 1–28, 1997, [Online]. Available: www.isostandards.com.au
P. Kumbhar, P. Xu, J. Yang, Evaluation of human body response for different vehicle seats using a multibody biodynamic model. SAE Tech. Pap. (2013). https://doi.org/10.4271/2013-01-0994
Y. Zhong, B. Shirinzadeh, G. Alici, J. Smith, Computer methods in biomechanics and biomedical engineering. Comput. Methods Biomech. Biomed. Engin. 9(5), 289–304 (2006). https://doi.org/10.1080/10255840600908503
I. Singh, S.P. Nigam, V.H. Saran, Modal analysis of human body vibration model for Indian subjects under sitting posture. Ergonomics 58(7), 1117–1132 (2015). https://doi.org/10.1080/00140139.2014.961567
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Bhatia, A., Kalsi, S., Sehgal, A.K. et al. Comparative Study of different Seat Cushion Materials to improve the Comfort of Tractor Seat. J. Inst. Eng. India Ser. A 103, 387–396 (2022). https://doi.org/10.1007/s40030-022-00622-8
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DOI: https://doi.org/10.1007/s40030-022-00622-8