Investigation of Stresses in U-Shaped Metal Bellow Using EJMA Standards

Subject Areas : Mechanical Engineering

Kondapalli Siva Prasad ¹ , Gudla Pavani ²

1 - Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, India
2 - Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, India

Received: 2017-01-05 Accepted : 2017-02-05 Published : 2017-08-24

Keywords: Expansion joints, Metal bellow, EJMA,

Abstract :

Metal Bellows finds wide application in expansion joints, which are used in aerospace, chemical plants, power system, heat exchangers, automotive vehicle parts, piping system, petrochemical plant, refineries, etc. During service they are subjected to various stresses and exposed to different environments, which leads to failure. Hence there is a need for proper design of metal bellow as per the application. The main objective of the paper is to evaluate the stresses generated in the metal bellow and the cycle life working at different working pressures. In this paper, the stresses are calculated using Expansion Joint Manufacturing Association (EJMA) standards and compared with the results obtained using ANYS software for two different materials namely Inconel 625 and Inconel 718 for the pressure values ranging from 20 to 40 bar.

References:

[1] Jayesh. B. Khunt, Rakesh. P. Pajapathi, “Design and             Thermal Analysis of Thermal Expansion Joint in Industrial Application”, International Journal for Innovative Research in Science & Technology, Volume 1, Issue 6, 2014, pp.63-65.

[2]   S. H. Gawande, N. D. Pagar, V. B. Wagh, and A. A. Keste, “Numerical Investigations on Characteristics of Stresses in U-Shaped Metal Expansion Bellows”, International Journal of Metals, Volume 2015, Article ID 957925, 2015, pp.1-9.

[3]   Lu Zhiming, Jin Jie, Gao Zengliang, and Qin Yi, “Effects of Axial Deformation Load on In-Plane Instability of   U-Shaped Bellows”, Journal of Pressure Vessel Technology, Volume.125, 2003, pp.475-477.

[4] Brijeshkumar. M. Patel, V. A. Patel, “Design, Manufacturing and Analysis of Metal Expansion Bellows”, International Journal of Engineering Science   and Innovative Technology (IJESIT) Volume 2, Issue 3, 2013, pp. 266-273.

[5]   Zhiming Lu, Zhaoai Li, Chenhui Zhu and Honggang Gao, “Failure Analysis of Expansion Joint Bellows of Gas Pipelines”, ASME 2011 Pressure Vessels and Piping Conference Volume 6: Materials and Fabrication, Parts A and B, Paper No. PVP2011-57199, 2011, pp. 891-894.

[6]   Kazuyuki Tsukimori, “Theoretical Modeling of Creep Behavior of Bellows and Some Applications”, Journal of Pressure Vessel Technology, Volume.123, 2001, pp.179-190.

[7]    K. Brodzinski, P. Cruikshank, J.L. Fournel, L. Tavian, N. Veillet, “Failure Mechanism and Consolidation of the Compensation Bellows of the LHC Cryogenic Distribution line”, Physics Procedia Volume. 67, 2014, pp. 129 – 134.

[8]   Hasan Shaikh, Geogy George, Hawa Singh Khatak, “Failure Analysis of an AM 350 Steel Bellows”, Engineering Failure Analysis, Volume. 8, 2000, pp. 571-576.

[9]   Jinbong Kim, “The Effect of Geometry On Fatigue Life for Bellows Advanced Materials Development and Performance (AMDP2011)”, International Journal of Modern Physics: Conference Series, Volume. 6, 2012, pp .343-348.

[10] F. Elshawesh, A. Elhoud, W. Zeglam, K. Abusowa, A. Mesalem, “Corrosion Fatigue of Inconel 825 Flare Gas Line Bellows of Expansion Joints”, Journal of Failure Analysis and Prevention, Volume. 15, Issue. 1,2014, pp. 7 -14.

[11] Bijayani Panda, M. Sujata, M. Madan, S.K. Bhaumik, “Stress Corrosion Cracking in 316L Stainless Steel Bellows of a Pressure Safety Valve”, Engineering Failure Analysis, Volume.36 ,2013, pp. 379–389.

[12] Asril Pramutadi, Andi Mustari, Minoru Takahashi, “Metallurgical Analysis of Corroded Bellows of Bellow-Sealed Valve in Lithium Flow System”, Fusion Engineering and Design, Volume. 88, 2013, pp. 202–208.

[13] Abhay K. Jha, V. Diwaker, K. Sreekumar, “Metallurgical Investigation on Stainless Steel Bellows Used in Satellite Launch Vehicle”, Engineering Failure Analysis, Volume. 13, 2005, pp. 1437–1447.

[14] Y.Z. Zhu, H.F. Wang, Z.F. Sang, “The Effect of Environmental Medium on Fatigue Life for U-Shaped Bellows Expansion Joints”, International Journal of Fatigue, Volume.28, 2004, pp.28–32.

[15] C. Becht IV, “Fatigue of Bellows, a new Design Approach”, International Journal of Pressure Vessels and Piping, Volume.77, 2000, pp.843-850.

[16] EJMA, “Standards of Expansion Joint Manufacturers Association, Expansion Joint Manufacturers Association”, New York, NY, USA, 9th edition, 2008.

[17]  www.haynesintl.com