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CSME 2020/04
Volume 41 No.2
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229-238
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Ride Analysis of Track-Vehicle-Human Body Interaction Subjected to Random Excitation
Sono Bhardawaj a, Rakesh Chandmal Sharma a and Sunil Kumar Sharma b
aMechanical EngineeringDepartment, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, India.
bDepartment of Mechanical Engineering, Amity School of Engineering and Technology, Amity University Uttar Pradesh, Noida, India
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Abstract:
This paper considers a track-vehicle-human body 54 degrees of freedom (DoF) system formulated using Lagrange’s method out of which 4 DoF to track system, 40 DoF to rail vehicle system and 10 DoF to lumped parameter bio-dynamic human body system are assigned. Stationary random track irregularities are measured with Track Recording Car and represented by Power Spectral Density functions using Fast Fourier Transformation. The formulated model is validated by comparing the results of accelerations analysis with the same determined through experimental measurements. The vehicle ride comfort is determined at the passenger seat based on standards specified in annexure ISO 2631-1. The vertical seat to head and vertical back support to head transmissibility of the human body model in seated backrest position is evaluated and validated through past reported studies.
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Keywords: power spectral density, ride comfort, track recording car, lagrange’s method
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©
2020
CSME , ISSN 0257-9731
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