Numerical Simulation of Impact Damage Induced by Orbital Debris on Shielded Wall of Composite Overwrapped Pressure Vesse
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Numerical Simulation of Impact Damage Induced by Orbital Debris on Shielded Wall of Composite Overwrapped Pressure Vessel Aleksandr Cherniaev & Igor Telichev
# Springer Science+Business Media Dordrecht 2014
Abstract This paper presents a methodology for numerical simulation of the formation of the front wall damage in composite overwrapped pressure vessels under hypervelocity impact. Both SPH particles and Lagrangian finite elements were employed in combination for numerical simulations. Detailed numerical models implementing two filament winding patterns with different degree of interweaving were developed and used to simulate 2.5 km/s and 5.0 km/s impacts of 5 mm-diameter spherical aluminum-alloy projectile. Obtained results indicate that winding pattern may have a pronounced effect on vessel damage in case of orbital debris impact, influencing propagation of the stress waves in composite material. Keywords Hypervelocity impact (HVI) . Composite overwrapped pressure vessels (COPV) . Numerical simulation . Smooth particles hydrodynamics (SPH) . Finite elements method (FEM)
1 Introduction Gas-filled pressure vessels, being extensively used in spacecraft onboard systems, are exposed to the space debris environment during operation on the orbit. They have been recognized as the most critical spacecraft component in terms of protection requirements [1]. In case of hypervelocity impact (HVI) by orbital debris, the pressure vessels reveal high potential for catastrophic failure accompanied with fragmentation. Fracture and damage of metallic pressure vessels under HVI has been studied by many researchers experimentally [2–10], numerically [11] and analytically [12–14]. However, it is expected that over the next decade all-metallic containers in spacecraft systems will be largely substituted by composite overwrapped pressure vessels (COPVs) because of their superior weight efficiency [15]. Vessels of this type are typically manufactured by filament winding. To the best of our knowledge, there was no systematic experimental study specific to HVI on composite overwrapped pressure vessels reported in literature. Attempts to numerical modeling were also much more limited and rather simplified [16]. The simplifications, in particular, are associated with the common practice in HVI A. Cherniaev (*) : I. Telichev Department of Mechanical Engineering, University of Manitoba, E2-327 EITC, 75A Chancellors Circle, Winnipeg, MB R3T 5V6, Canada e-mail: [email protected]
Appl Compos Mater
simulations to substitute real composite laminate by homogeneous orthotropic material with similar effective properties (e.g., [17, 18]). However, validity of this approach for filament-wound composites is questionable due to presence of complex interweaving between filament bands. This work demonstrates a methodology for numerical simulation of the front wall damage in COPVs under HVI and addresses two interrelated problems: 1) the effect of the filament winding pattern used in the vessel fabrication on its damage and 2) the leve
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