Thinning and ovality are commonly observed irregularities in pipe bends, which induce higher stress than perfectly circular cross sections. In this work, the stresses introduced in pipe bends with different ovalities and thinning for a particular internal pressure are calculated using the finite element method. The constant allowable pressure ratio for different ovalities and thinning is presented at different bend radii. The allowable pressure ratio increases, attains a maximum, and then decreases as the values of ovality and thinning are increased. An empirical relationship to determine the allowable pressure in terms of bend ratio, pipe ratio, percent thinning, and percent ovality is presented. The pipe ratio has a strong effect on the allowable pressure.
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June 2010
Research Papers
The Accepting of Pipe Bends With Ovality and Thinning Using Finite Element Method
AR. Veerappan,
AR. Veerappan
Department of Mechanical Engineering,
National Institute of Technology
, Tiruchirappalli, Tamilnadu 620015, India
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S. Shanmugam,
S. Shanmugam
Department of Mechanical Engineering,
e-mail: shunt@nitt.edu
National Institute of Technology
, Tiruchirappalli, Tamilnadu 620015, India
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S. Soundrapandian
S. Soundrapandian
GB Engineering Enterprises (P) Ltd.
, Tiruchirappalli, Tamilnadu 620015, India
Search for other works by this author on:
AR. Veerappan
Department of Mechanical Engineering,
National Institute of Technology
, Tiruchirappalli, Tamilnadu 620015, India
S. Shanmugam
Department of Mechanical Engineering,
National Institute of Technology
, Tiruchirappalli, Tamilnadu 620015, Indiae-mail: shunt@nitt.edu
S. Soundrapandian
GB Engineering Enterprises (P) Ltd.
, Tiruchirappalli, Tamilnadu 620015, IndiaJ. Pressure Vessel Technol. Jun 2010, 132(3): 031204 (9 pages)
Published Online: May 5, 2010
Article history
Received:
August 7, 2008
Revised:
March 9, 2010
Online:
May 5, 2010
Published:
May 5, 2010
Citation
Veerappan, A., Shanmugam, S., and Soundrapandian, S. (May 5, 2010). "The Accepting of Pipe Bends With Ovality and Thinning Using Finite Element Method." ASME. J. Pressure Vessel Technol. June 2010; 132(3): 031204. https://doi.org/10.1115/1.4001423
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