Universiti Teknologi Malaysia Institutional Repository

Effect of load carriage on the backpack vibration system

Abdul Rahman, Sharifah Alwiah and Rambely, Azmin Sham and Ahmad, Rokiah Rozita (2012) Effect of load carriage on the backpack vibration system. In: Regional Conference on Automotive Research, ReCAR 2011. Trans Tech Publications, Switzerland, pp. 295-299. ISBN 978-303785413-6

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/AMM.1...


Vibration causes many problems in human health, comfort and performance. While walking with a backpack, movement of the backpack relative to the body causes a vibration which behaves like a spring that moves up and down following the motion of the body. In order to analyse the backpack's response to trunk motion, a backpack vibration system has been developed in this study. A model of a backpack-human trunk system, which is represented by a mass-spring system with a damper, and a Fourier series as an external force, is used to describe the motion of the vibration system. The vibration system was analysed using constant values of damping and spring stiffness (c =1 and k = 5) but with different values of the mass of the backpack. Increasing the mass of the backpack from 10% of body weight to 15 and 20% of body weight increased the amplitude of both the displacement and velocity of the backpack vibration system. However, the frequencies of the vibration system decreased as the mass of the backpack increased.

Item Type:Book Section
Additional Information:Indexed by Scopus
Uncontrolled Keywords:fourier series, damping, stiffness, backpack
Subjects:Q Science > Q Science (General)
Divisions:Razak School of Engineering and Advanced Technology
ID Code:35690
Deposited On:30 Oct 2013 00:36
Last Modified:02 Feb 2017 01:14

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