THERMO-ELASTIC ANALYSIS OF A KICK MOTOR NOZZLE INCORPORATING SPATIALLY REINFORCED COMPOSITES

摘要

The mechanical and thermal properties of spatially reinforced composites are predicted using volume average and rules of mixture of the rods and matrix properties for stiffness, thermal conductivity and coefficient of thermal expansion in this paper. The study examines the elastic behavior, the temperature distribution, and the thermo-elastic behavior of a kick motor nozzle, which includes carbon/carbon spatially reinforced composite as a throat part. The elastic deformation of the nozzle composed of 3-D carbon/carbon spatially reinforced composite shows asymmetry, while the elastic deformation of 4-D carbon/carbon spatially reinforced composite nozzle shows uniformity in the circumferential direction. The thermo-elastic deformations of both the 3-D and the 4-D spatially reinforced composite nozzles are uniform in the circumferential direction. The deformation of the 3-D spatially reinforced composite nozzle is slightly smaller than that of the 4-D spatially reinforced composite nozzle in the nozzle throat.