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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. Applied Mechanics And Materials, 165 . pp. 295-299.

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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 backpacks 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:Article
Uncontrolled Keywords:Mechanics and materials
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Razak School of Engineering and Advanced Technology
ID Code:46857
Deposited By: Haliza Zainal
Deposited On:22 Jun 2015 05:55
Last Modified:26 Sep 2017 01:23

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