Stress intensity factor and flexibility factor are important analysis parameters for branch pipe connections subjected to in-plane and out-of-plane moments. The calculation of stress intensity factors for a large range of unreinforced fabricated tees (, , ) was performed by Widera and Wei [WRC Bulletin 497 2004] and empirical formulas were provided based upon a parametric finite element analysis employing four-node shell elements. The purpose of this paper is to extend the previous effort by Widera and Wei and calculate the in-plane and out-of-plane flexibility factors for the same range of geometric parameters. Similarly, empirical formulas for the determination of these flexibility factors are proposed. The results show that the lengths of the branch and run pipes as well as the geometric parameters (, and ) have an effect on the calculation of flexibility factors.
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February 2006
Research Papers
Flexibility Factors for Branch Pipe Connections Subjected to In-Plane and Out-of-Plane Moments
Liping Xue,
Liping Xue
Marquette University,
Center for Joining and Manufacturing Assembly
, P.O. Box 1881, Milwaukee, WI 53201-1881
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G. E. O. Widera,
G. E. O. Widera
Marquette University,
Center for Joining and Manufacturing Assembly
, P.O. Box 1881, Milwaukee, WI 53201-1881
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Zhifu Sang
Zhifu Sang
Nanjing University of Technology
, Nanjing, Jiangsu, 210009, People’s Republic of China
Search for other works by this author on:
Liping Xue
Marquette University,
Center for Joining and Manufacturing Assembly
, P.O. Box 1881, Milwaukee, WI 53201-1881
G. E. O. Widera
Marquette University,
Center for Joining and Manufacturing Assembly
, P.O. Box 1881, Milwaukee, WI 53201-1881
Zhifu Sang
Nanjing University of Technology
, Nanjing, Jiangsu, 210009, People’s Republic of ChinaJ. Pressure Vessel Technol. Feb 2006, 128(1): 89-94 (6 pages)
Published Online: November 1, 2005
Article history
Received:
September 26, 2005
Revised:
November 1, 2005
Citation
Xue, L., Widera, G. E. O., and Sang, Z. (November 1, 2005). "Flexibility Factors for Branch Pipe Connections Subjected to In-Plane and Out-of-Plane Moments." ASME. J. Pressure Vessel Technol. February 2006; 128(1): 89–94. https://doi.org/10.1115/1.2140801
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