Analysis of Burst Conditions of Shielded Pressure Vessels Subjected to Space Debris Impact

[+] Author and Article Information
Igor Ye. Telitchev

 University of Calgary, Department of Mechanical and Manufacturing Engineering 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4telichev@enme.ucalgary.ca

J. Pressure Vessel Technol 127(2), 179-183 (Mar 10, 2005) (5 pages) doi:10.1115/1.1903005 History: Received February 22, 2004; Revised March 10, 2005

The present paper summarizes the results obtained from impacts on shielded pressure vessels and analyzes the conditions under which bursting of a shielded pressure vessels occur that are damaged by space debris. The semianalytical model was generated to describe the processes occurring upon impact of a hypervelocity projectile into a shielded vessel. A model capable to describe the failure mechanisms of damaged vessels is suggested. Nonlinear fracture mechanics techniques were used to analyze and predict whether a vessel perforation will lead to mere leakage of gas, or whether unstable crack propagation will occur that leads to catastrophic fracture of the vessel. The validity of the developed model is tested by simulating the experimental results.

Copyright © 2005 by American Society of Mechanical Engineers
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Figure 1

Oblique impact on shielded pressure vessel (a) and secondary impact hole (b)

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Figure 2

Polygonal crack—Model of damage

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Figure 3

Pressure decay curves calculated for initial conditions of Exp. 20 and Exp. 21

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Figure 4

Critical pressure (Exp. data from 8)

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Figure 5

Illustration of secondary impact hole (case of normal impact)



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