Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Design and Structural Analysis of Type 4 Composite Pressure Vessel Fitted in Spare Tire Well

스패어 타이어 웰 부에 설치되는 Type 4 복합재료 압력용기 설계 및 구조해석

  • Received : 2018.12.19
  • Accepted : 2018.12.30
  • Published : 2018.12.30
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Abstract

Composite pressure vessels made through filament winding are widely used in various fields. Numerous studies regarding composite pressure vessels have been conducted in the automotive industry to improve the space efficiency of trunks as well as the fuel efficiency. Compared with steel liquefied petroleum gas (LPG) vessels used in the conventional LPG vehicles, the use of type 4 composite pressure vessels has advantages in terms of reduction of the weight of vehicles. This study focused on development of type 4 composite pressure vessels that can be installed in the spare tire well. Those type 4 composite pressure vessels are designed with torispherical dome shapes instead of geodecis dome shapes because of the space limitation. To reduce deformation due to the stresses in the axial direction of the vessels, thereby securing the safety of the container, the reinforcing bar concept was applied. A structural analysis software, ABAQUS, confirmed the effect of the reinforcing bar on the axial deformation through the type 4 composite pressure vessel. As a result, the final winding angle of the composite layer was analyzed by applying $26^{\circ}/28^{\circ}/26^{\circ}/28^{\circ}/26^{\circ}/88^{\circ}$ The tensile stress was 939.2 MPa and the compressive stress was 249.3 MPa.

Keywords

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Fig. 1. Design dome shape

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Fig. 2. Liner with aluminum boss

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Fig. 3. Netting theory for (a) helical, (b) hoop

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Fig. 4. Composite part consisting of 6 layers

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Fig. 5. LPG composite pressure vessel

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Fig. 6. Composite pressure vessel with internal pressure and constraint

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Fig. 8. Composite pressure vessel deformed shape (scale fac-tor: 3)

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Fig. 9. Composite pressure vessel fiber direction stress

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Fig. 10. 26°/28°/26°/28°/26°/88 analysis result (maximum stress generating position: knuckle part)

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Fig. 11. 26°/27°/26°/27°/26°/88° analysis result (maximum stress generating position: dome part)

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Fig. 7. PA6 Liner deformed shape (scale factor: 3)

Table 1. Material properties of PA6 (Akulon K-X07476)

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Table 2. Material properties of Al. 6061

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Table 3. Material properties of glass/epoxy6)

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Table 4. Structural analysis results according to helical and hoop winding angles

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