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3-D finite Element Analysis for Thermo-Mechanical Behavior of Laminated Carbon-Phenolic Composite Ring for Rocket Nozzle Insulator  

Lee, Sun-Pyo (경기대학교 기계시스템디자인공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.10, no.4, 2006 , pp. 47-53 More about this Journal
Abstract
In this paper, the thermal insulator structure of a real rocket which is fabricated in a way that laminated composite rings are connected in series is analyzed using 3-dimensional axisymmetric finite element models. Simulation of cowl zone using a real operating conditions provides that the stress distribution in the laminated composite ring is largely influenced by ply-angles, axial dimensions, and boundary conditions. Notably the plylift that is the precursor to the wedge-out occurs in the ring-to-ring bonding region. It is hypothesized that after the plylift the wedge is dropped out due to the shear stresses in the ply-angle direction and axial compressive stresses.
Keywords
Carbon-Phenolic Composites; Rocket Nozzle Insulator; Laminated Composite Ring; Pyrolysis; Plylift; Wedge-out;
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  • Reference
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