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Research Papers: Materials and Fabrication

Strength Criteria Versus Plastic Flow Criteria Used in Pressure Vessel Design and Analysis1

[+] Author and Article Information
Xian-Kui Zhu

EWI,
1250 Arthur E. Adams Drive,
Columbus, OH 43221

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 11, 2015; final manuscript received August 7, 2015; published online April 28, 2016. Assoc. Editor: Kunio Hasegawa.

J. Pressure Vessel Technol 138(4), 041402 (Apr 28, 2016) (7 pages) Paper No: PVT-15-1122; doi: 10.1115/1.4031284 History: Received June 11, 2015; Revised August 07, 2015

This paper presents a critical comparison of the traditional strength criteria and the modern plastic flow criteria used in the structural design and integrity assessment of pressure vessels. This includes (1) a brief review of the traditional strength criteria used in the ASME Boiler and Pressure Vessel (B&PV) Code, (2) a discussion of the shortcomings of the traditional strength criteria when used to predict the burst pressure of pressure vessels, (3) an analysis of challenges, technical gaps, and basic needs to improve the traditional strength criteria, (4) a comparison of strength theories and plasticity theories for ductile materials, (5) an evaluation of available plastic flow criteria and their drawbacks in prediction of burst pressure of pressure vessels, (6) a description of a newly developed multiaxial yield criterion and its application to pressure vessels, and (7) a demonstration of experimental validation of the new plastic flow criterion when used to predict the burst pressure of thin-wall pressure vessels. Finally, recommendations are made for further study to improve the traditional strength design criteria and to facilitate utilization of the modern plastic flow criteria for pressure vessel design and analysis.

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Figures

Grahic Jump Location
Fig. 1

Experimental burst pressure data and the predictions by Tresca, von Mises, and flow stress-based strength criteria for various pipeline carbon steels

Grahic Jump Location
Fig. 2

Comparison of test data of initial stresses with Tresca locus, von Mises locus, and Zhu–Leis locus

Grahic Jump Location
Fig. 3

Comparisons of three theoretical solutions and experimental data for different hardening carbon steels

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