Fig. 1. Design dome shape
Fig. 2. Liner with aluminum boss
Fig. 3. Netting theory for (a) helical, (b) hoop
Fig. 4. Composite part consisting of 6 layers
Fig. 5. LPG composite pressure vessel
Fig. 6. Composite pressure vessel with internal pressure and constraint
Fig. 8. Composite pressure vessel deformed shape (scale fac-tor: 3)
Fig. 9. Composite pressure vessel fiber direction stress
Fig. 10. 26°/28°/26°/28°/26°/88 analysis result (maximum stress generating position: knuckle part)
Fig. 11. 26°/27°/26°/27°/26°/88° analysis result (maximum stress generating position: dome part)
Fig. 7. PA6 Liner deformed shape (scale factor: 3)
Table 1. Material properties of PA6 (Akulon K-X07476)
Table 2. Material properties of Al. 6061
Table 3. Material properties of glass/epoxy6)
Table 4. Structural analysis results according to helical and hoop winding angles
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