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http://dx.doi.org/10.14775/ksmpe.2017.16.5.013

A Study on Failure Modes of Type4 Composite Pressure Cylinders according to Shapes of Domes  

Cho, Sungmin (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Kim, Kwang Seok (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Cho, Min-sik (DH Precision Industrial co., LTD.)
Lee, Sun-kyu (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Lee, Seung-kuk (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Lyu, Sung-Ki (School of Mechanical & Aerospace Eng., ReCAPT Gyeongsang National Univ.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.16, no.5, 2017 , pp. 13-18 More about this Journal
Abstract
In this work the augmented safety of Type 4 composite vessel in accordance with uniform-stress design has been demonstrated through a series of burst tests and structural analyses. For this end, three sample vessels were used: (1) designed as guided by the isotensoid dome theory (called iso-dome cylinder); (2) with dome longer compared to uniform-stress design (called prolate cylinder); and (3) with dome wider than uniform-stress design (called oblate cylinder). Structural analyses have been performed using ABAQUS finite element code based on the periodic symmetry to circumferential direction. As a result, the maximum stresses are induced around the bodies of all three cylinders. However, the analyses, with the assumption of possible defect demonstrate that the maximum stresses are induced around the dome knuckles for the prolate and the oblate cylinders. The results of the burst tests for the three cylinders show that the burst initiates from the cylinder body of the iso-dome cylinder and from the dome knuckles of the prolate and the oblate cylinders. Finally, it is recommended that, to comply with DOT CFFC 2007, the dome shape should be designed and fabricated as guided by the isotensoid dome theory.
Keywords
Type4 Pressure Cylinder; Isotensoid Dome Theory; Failure Mode; Burst Test; Dome Configuration;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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