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Plastic Loads for Cones Subjected to Internal Pressure and Axial Tension

[+] Author Affiliations
J. Błachut

University of Liverpool, Liverpool, UK

D. Sala

AGH University of Science and Technology, Kraków, Poland

Paper No. PVP2017-65184, pp. V03BT03A027; 8 pages
  • ASME 2017 Pressure Vessels and Piping Conference
  • Volume 3B: Design and Analysis
  • Waikoloa, Hawaii, USA, July 16–20, 2017
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5795-3
  • Copyright © 2017 by ASME


The paper discusses envelopes of combined loading corresponding to: (i) first yield (ii) plastic load, and (iii) plastic instability load. The latter two were researched in the past but for a single load, only. The past idea has been expanded in the paper to two, practically relevant, simultaneously acting loads. Conical shell serves here as an example.

It is shown that the ratio of area of plastic load envelope to the area associated with the first-yield envelope is 3.2 whilst the similar ratio of plastic instability to the first-yield envelope amounts to 25.8. This indicates ‘a modest’ (320 %) increase of possible range of loading, and a substantial reserve of strength above the end-of-elastic behavior (approx. 26-times).

Copyright © 2017 by ASME
Topics: Pressure , Stress , Tension



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