International Journal of Vehicle Structures and Systems

Open Access Open Access  Restricted Access Subscription Access

Effect of Low-Frequency Vibration on Human Body in Standing Position Exposed to Railway Vehicle


Affiliations
1 Dept.of Mech. and Industrial Engg., Indian Institute of Technology Roorkee, Uttarakhand, India
 

   Subscribe/Renew Journal


In this paper, the dynamic characteristics of the human body were investigated by developing a 3-D finite element model based on 50th percentile anthropometric data for a 54 kg Indian male subject in standing position by considering human body segments as an ellipsoid. The finite element modal analysis is carried out to extract several low-frequency vibration modes and its vibration mode shapes were presented in this paper. The results show that the lowest natural frequency of the standing passenger model occurs in the fore-and-aft direction. The second natural frequency occurs in the lateral direction and the first order natural frequency of the standing passenger model in the vertical direction occurs at 5.379 Hz. The model will be helpful to predict the vibration response of human body under various vibration environment encounters in the railway vehicle.

Keywords

Railway vehicle, Modal Analysis, Human Vibration, Standing Position, Finite Element Method.
User
Subscription Login to verify subscription
Notifications
Font Size

  • C. Sujatha and K.G. Babu. 2011. Study of dynamic effect of track irregularities on railway track system, Adv. Vib. Engg., 10(2), 133-148.

  • S.K. Sharma, R.C. Sharma, A. Kumar and S. Palli. 2015. Challenges in rail vehicle-track modeling and simulation, Int. J. Vehicle Structures & Systems, 7(1), 1-9. https://doi.org/10.4273/ijvss.7.1.01

  • R. Akers. 2004. Shock, Acceleration and Motion Evaluation of High Speed Planning Boats, USA.

  • R.C. Sharma and K.K. Goyal. 2017. Improved suspension design of Indian railway general sleeper ICF coach for optimum ride comfort, J. Vib. Eng. Technol., 5(6), 547-556.

  • M.J. Griffin. 1998. Fundamentals of Human Responses to Vibration, F.J.F. & J.G.W. Edition, 179-223.

  • J. Sundstrom. 2006. Difficulties to Read and Write under Lateral Vibration Exposure: Contextual Studies of Train Passengers Ride Comfort, Royal Institute of Technology, KTH, Stockholm, Sweden.

  • C. Corbridge and M.J. Grifftn. 1986. Vibration and comfort: Vertical and lateral motion in the range 0·5 to 5·0 Hz, Ergonomics, 29(2), 249-272. https://doi.org/10.1080/00140138608968263

  • A.R. Ismail, M.Z. Nuawi, C.W. How, N.F. Kamaruddin, M.J.M. Nor and N.K. Makhtar. 2010 Whole body vibration exposure to train passenger, Am. J. Appl. Sci., 7(3), 352-359. https://doi.org/10.3844/ajassp.2010.352 .359

  • M.K. Bhiwapurkar, V.H. Saran and S.P. Harsha. 2016. Studying the effect of whole body vibration exposures, direction and postures on writing performance of train passengers, J. Advances in Vehicle Engg., 2(1), 29-41.

  • T. Kim, Y. Kim, and Y. Yoon. 2005. Development of a biomechanical model of the human body in a sitting posture with vibration transmissibility in the vertical direction, Int. J. Industrial Ergonomics, 35, 817-829. https://doi.org/10.1016/j.ergon.2005.01.013

  • Y. Matsumoto and M.J. Griffin. 2003. Mathematical models for the apparent masses of standing subjects exposed to vertical whole-body vibration, J. Sound Vib., 260(3), 431-451. https://doi.org/10.1016/S0022460 X(02)00941-0

  • Y. Matsumoto and M. J. Griffin. 1998. Dynamic response of the standing human body exposed to vertical vibration: influence of posture and vibration magnitude, J. Sound Vib., 212(1), 85-107. https://doi.org/10.1006/jsvi.1997.1376

  • G.H.M.J. Subashi, Y. Matsumoto, and M.J. Griffin. 2008. Modelling resonances of the standing body exposed to vertical whole-body vibration: Effects of posture, J. Sound Vib., 317, 1-2, 400-418.

  • G.R. Bartz, J.A. and Gianotti. 1975. Computer program to generate dimensional and inertial properties of the human body, ASME J. Eng. Ind., 1, 49-57. https://doi.org/10.1115/1.3438590

  • S.P. Nigam and I. Malik. 1987. A study on a vibratory model of a human body, J. Biomechanical Engg, 109, 143-153. https://doi.org/10.1115/1.3138657

  • T.C. Gupta. 2007. Identification and experimental validation of damping ratios of different human body segments through anthropometric vibratory model in standing posture, J. Biomechanical Engg, 129, (4), 566. https://doi.org/10.1115/1.2720917

  • I. Singh, S.P. Nigam and V.H. Saran. 2015. Modal analysis of human body vibration model for Indian subjects under sitting posture, Ergonomics, 58(7), 1117-1132. https://doi.org/10.1080/00140139.2014.961567

  • M. Gupta and T.C. Gupta. 2017. Modal damping ratio and optimal elastic moduli of human body segments for anthropometric vibratory model of standing subjects, J. Biomechanical Engineering, 139(10), 101006. https://doi.org/10.1115/1.4037403

  • M.J.G.S. Kitazaki. 1997. A modal analysis of wholebody vertical vibration, using a finite element model of the human body, J. Sound Vib., 200(1), 83-103. https://doi.org/10.1006/jsvi.1996.0674

  • L.X. Guo, Y.M. Zhang and M. Zhang. 2011. Finite Element Modeling and Modal Analysis of the Human Spine Vibration Configuration, IEEE Trans. Biomed. Engg. 58(10), 2987-2990. https://doi.org/10.1109/TBME.2011.2160061

  • C. Liu, Y. Qiu and M.J. Griffin. 2015. Finite element modelling of human-seat interactions: vertical in-line and fore-and-aft cross-axis apparent mass when sitting on a rigid seat without backrest and exposed to vertical vibration, Ergonomics, 58(7), 1207-1219. https://doi.org /10.1080/00140139.2015.1005164

  • S. Adewusi, M. Thomas, V.H. Vu and W. Li. 2014. Modal parameters of the human hand-arm using finite element and operational modal analysis, Mech. Ind., 15(6), 541-549. https://doi.org/10.1051/meca/2014060

  • A. Pionteck, X. Chiementin, M. Munera, S. Murer, D. Chadefaux and G. Rao. 2017. FE model and operational modal analysis of lower limbs, Appl. Sci., 7(8), 853. https://doi.org/10.3390/app7080853

  • D. Chakrabarti, 1997. Indian Anthropometric Dimensions for Ergonomic Design Practice, National Institute of Design.

  • D.P. Garg and M.A. Ross, 1976. Vertical mode human body vibration transmissibility, IEEE Trans. Syst. Man. Cybern., 6(2), 102-112. https://doi.org/10.1109/TSMC.1976.5409180

  • A. Chawla, S. Mukherjee and B. Karthikeyan. 2006. Mechanical properties of soft tissues in the human chest, Abdomen and Upper extremities, Institution of Engineers, J. Mechanical Engineering.


Abstract Views: 305

PDF Views: 130




  • Effect of Low-Frequency Vibration on Human Body in Standing Position Exposed to Railway Vehicle

Abstract Views: 305  |  PDF Views: 130

Authors

Rajesh Govindan
Dept.of Mech. and Industrial Engg., Indian Institute of Technology Roorkee, Uttarakhand, India
Suraj Prakash Harsha
Dept.of Mech. and Industrial Engg., Indian Institute of Technology Roorkee, Uttarakhand, India

Abstract


In this paper, the dynamic characteristics of the human body were investigated by developing a 3-D finite element model based on 50th percentile anthropometric data for a 54 kg Indian male subject in standing position by considering human body segments as an ellipsoid. The finite element modal analysis is carried out to extract several low-frequency vibration modes and its vibration mode shapes were presented in this paper. The results show that the lowest natural frequency of the standing passenger model occurs in the fore-and-aft direction. The second natural frequency occurs in the lateral direction and the first order natural frequency of the standing passenger model in the vertical direction occurs at 5.379 Hz. The model will be helpful to predict the vibration response of human body under various vibration environment encounters in the railway vehicle.

Keywords


Railway vehicle, Modal Analysis, Human Vibration, Standing Position, Finite Element Method.

References





DOI: https://doi.org/10.4273/ijvss.10.3.01