A simplified numerical method for both lower and upper-bound limit analyses of 3-D structure has been developed in our previous work. The load-carrying capacities of 3-D pipelines with either one or two part-through defects of various geometrical configurations were calculated by the proposed method. In the present paper, the effects of the distance between two defects on the load-carrying capacity of pressure vessels are evaluated and discussed in details. Using curve-fitting schemes, an empirical formula for obtaining the load-carrying capacity of pressure vessels with double defects from that of pressure vessels with a single defect are proposed. Some engineering suggestions are presented simultaneously. All the numerical results confirm the applicability of the simplified numerical method. [S0094-9930(00)00102-5]
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e-mail: hfc@leicester.ac.uk
e-mail: mdshu@ntu.edu.sg
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Technical Papers
The Effects of the Distance Between Two Defects on the Load-Carrying Capacity of a Pressure Vessel
H. F. Chen,
e-mail: hfc@leicester.ac.uk
H. F. Chen
School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798
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D. W. Shu
e-mail: mdshu@ntu.edu.sg
D. W. Shu
School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798
Search for other works by this author on:
H. F. Chen
School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798
e-mail: hfc@leicester.ac.uk
D. W. Shu
School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798
e-mail: mdshu@ntu.edu.sg
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, June 14, 1999; revised manuscript received December 15, 1999. Associate Technical Editor: R. Seshadri.
J. Pressure Vessel Technol. May 2000, 122(2): 198-203 (6 pages)
Published Online: December 15, 1999
Article history
Received:
June 14, 1999
Revised:
December 15, 1999
Citation
Chen, H. F., and Shu, D. W. (December 15, 1999). "The Effects of the Distance Between Two Defects on the Load-Carrying Capacity of a Pressure Vessel ." ASME. J. Pressure Vessel Technol. May 2000; 122(2): 198–203. https://doi.org/10.1115/1.556171
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