금속 보스 압력분포비 설계 변경에 따른 복합재 연소관 파열압력에 관한 연구

다국어 초록 (Multilingual Abstract)

Composite motor cases fabricated by the filament winding method are structurally weak in the dome when they are required to withstand the internal pressure of the combustion gas. In this study, a finite element analysis is conducted to compare the burst pressure of a composite dome according to the variation of the pressure distribution ratio(PDR). The performance of the composite motor case was compared quantitatively by calculating the stress on the inner and outer dome surfaces and metal boss volume. As a result, the critical point of the failure mode was observed at a PDR between 2.5 and 3.0. A design at a PDR of 2.53.5 can reduce the weight of metal boss without fluctuation in the burst pressure of the combustion motor case. Moreover as the design reference value changes according to the dome shape and opening size, further analysis and testing are necessary.

참고문헌 (Reference)

1 정승민, "복합재 연소관의 금속 보스 형상 최적설계" 한국추진공학회 20 (20): 29-37, 2016

2 황태경, "복합재 압력용기의 돔 형상 설계 및 성능 평가" 한국복합재료학회 20 (20): 31-41, 2007

3 Hwang, T. K., "The Prediction of Structural Behavior for Composite Pressure Vessel with Changed Dome Shape" 288-292, 2008

4 Sorrentino, L., "Performance Index Optimization of Pressure Vessels Manufactured by Filament Winding Technology" 24 (24): 269-285, 2015

5 Verderaime, V., "Identification and Management of Filamanet-Wound Case Stiffness Parameters" NASA 1983

6 Erickson, J.D., "Graphite Epoxy Pressure Vessel Dome Reinforcement Study" 1987

7 Yamashita, A., "Development of High-Pressure Hydrogen Storage System for the Toyota “Mirai“" SAE 2015

8 Tackett, E. W., "Carbon Pressure Vessel Performance with Changing Dome Profiles" 1984