Bottom end-closure design optimization of DOT-39 non-refillable refrigerant cylinders

Kisioglu Y., Brevick J., Kinzel G.

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, vol.127, no.2, pp.112-118, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 127 Issue: 2
  • Publication Date: 2005
  • Doi Number: 10.1115/1.1858919
  • Journal Name: JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.112-118
  • Keywords: instability analysis, DOT-39 refrigerant cylinder, nonlinear failure analysis, nonuniform FEA model, NRV cylinders, TORISPHERICAL SHELLS, INTERNAL-PRESSURE, FAILURE
  • Kocaeli University Affiliated: Yes

Abstract

This study addresses the problem of stability (standing of cylinders upright) of DOT-39 nonrefillable refrigerant cylinders using both experimental and finite element analysis (FEA) approaches. When these cylinders are designed using traditional methods they often suffer permanent volume expansion at the bottom end closure and become unstable when they are pressure tested experimentally. In this study, experimental investigations were carried out using hydrostatic pressure tests with water. In the case of numerical investigations, FEA models were developed for three-dimensional (3D) axisymmetric quasi-static conditions. The FEA models were constructed using nonhomogenous material nonlinearity and geometrical nonuniformity conditions. The results obtained from both FEA models and experimental tests were compared. To eliminate the instability of these cylinders, a design of experiment technique was employed to optimize the bottom end-closure design using the FEA models.