Volume 27, Issue 2 (1-2009)
2009, 27(2): 149-154 |
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L. Saidi, M. Sheikhzadeh, S.A. Hosseini Ravandi, and K. Matin. Modeling the Vertical Falling Life Chute. Journal of Advanced Materials in Engineering (Esteghlal) 2009; 27 (2) :149-154
URL: http://jame.iut.ac.ir/article-1-457-en.html
URL: http://jame.iut.ac.ir/article-1-457-en.html
Abstract: (5281 Views)
Stretchable woven chute is a safe device for falling humans from multi-story buildings in emergencies. During the fall, the elastomeric property of the fabric, in the weft direction, causes radial forces towards the human body inside .These radial forces lead to frictional forces between the chute and the body. The falling man can reduce the falling speed by exerting outward forces via stretching and contracting arms or legs. In this research, a model is developed to analyze the different forces involved in the fall based on the so-called thin sheet tank "fall relations". The model is capable of determining body characteristics with respect to the real model. Finally, real-world model predictions have been made in which the effects of body weight and dimensions have been considered of.
