Hydraucally Driven Fractures in Permeable Medium
- Paper number
IAC-04-J.P.07
- Author
Prof. Nickolay N. Smirnov, Moscow Lomonosov State University, Russia
- Year
2004
- Abstract
Second and third generation launch vehicle systems require high propellant mass fraction, high thrust to weight propulsion, reliable system performance, smart and interacting capabilities in order to achieve crew safety goals, extended reusability, and cost efficiency. Composite materials are one of the many advanced structural materials available for next generation flight vehicles. Its unique properties, such as high specific strength and stiffness, make it indispensable for the design of next generation of crew exploration vehicle (CEV). This paper addresses a new concept that utilizes nanoparticles filler to alter the properties of LH2 composite tanks. Results trends show that when a small amount (<5 wt.An analytical model is used to analyze internal stack nano exfoliated composite laminates with transverse matrix cracks and delaminations emanating from the transverse crack tips. The model is determines the crack opening of damage laminates with emphasis on effect of nano particles on the damage zone, which is subjected to mechanical and/or thermal loads. The model is to predict the distribution of laminated crack opening displacement (DCOD) through the thickness of the laminate. Subsequently, the results (delaminated crack opening displacement) from the analysis of generic laminate system are used as input to the permeability model from which the permeability of damage laminate is evaluated, which incorporates the nano particles effect.
- Abstract document
- Manuscript document
IAC-04-J.P.07.pdf (🔒 authorized access only).
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