A comparison of energy absorbing capabilities of paper and steel structures subjected to progressive failure under free falling objects

Shah, Qasim H. and A Abakr, Yousif (2007) A comparison of energy absorbing capabilities of paper and steel structures subjected to progressive failure under free falling objects. Journal of Engineering Science and Technology, 2 (2). pp. 200-210. ISSN 18234690

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Abstract

An inverted paper cup of 0.26 mm thickness was subjected to deformation under a freely falling steel ball at a velocity of 2.77 m/sec. The deformed features of the paper cup were measured. The dynamic loading event was simulated using piecewise linear plasticity material model in LSDYNA. Deformed shape of the paper cup in finite element model matched closely with experimental results with ignorable small discrepancies. The paper cup was able to absorb all the kinetic energy of the falling steel ball for the above mentioned falling speed and the ball did not bounce out of the cavity generated by the impact. In LSDYNA a similar size steel cup was also subjected to a freely falling ball with same speed and the energy absorbed was compared to the energy absorbed by the paper cup. It was found that under similar onditions a paper cup would undergo a significant progressive failure and absorb all the energy of the falling object.

Item Type:	Article (Journal)
Additional Information:	3563/5653
Uncontrolled Keywords:	rogressive Failure, Paper Cups, Piecewise Linear Plasticity, LSDYNA, Energy Absorbed
Subjects:	U Military Science > U Military Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr Qasim Hussain Shah
Date Deposited:	18 Jun 2013 09:23
Last Modified:	18 Jun 2013 09:23
URI:	http://irep.iium.edu.my/id/eprint/5653

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