Proposal for Calculations of Flat Oval Pipes Under Internal Pressure Under Consideration of Material Plastification

[+] Author and Article Information
J. Jekerle

SHG-SCHACK GmbH, Ellenbacher Strasse 10, 34123 Kassel, Germany

J. Pressure Vessel Technol 119(3), 301-305 (Aug 01, 1997) (5 pages) doi:10.1115/1.2842308 History: Received July 17, 1995; Revised February 28, 1997; Online February 11, 2008


In the wall of an oval pipe, additional to the circumferential forces, shear forces and bending moments occur under internal pressure load. Under this condition, the bending stresses in certain cross sections reach a figure many times that of normal stresses so that yield strength of the material can be exceeded. The usual stress calculation method is based on the calculation of the bending moments with the use of the elastic bending equation. The use of the part-plastic equation presented in the paper gives more accurate values for the bending moments sought in the cross sections being checked. This paper shows that even though the new calculation method leads to a smaller wall thickness of the flat oval pipe, the design of the flat oval pipe is nevertheless safe.

Copyright © 1997 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In