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Sensitivity Analysis on Hydraulic Expanded Tube-to-Tubesheet Joints for Tube Layout Patterns

튜브 배열에 따른 튜브/튜브시트 수압 확관 접합의 민감도 해석

  • 김동영 (한국중공업(주)기술연구소) ;
  • 김태완 (한국중공업(주)기술연구소)
  • Published : 1999.11.01

Abstract

The basic requirements to improve the joints quality of tube-to-tubesheet for heat exchangers are to obtain high residual contact pressures between the tubes and the tubesheet as well as low residual stresses in the transition zone of the tubes. The residual contact pressures and residual stresses which govern the joint quality are influenced by parameters such as material properties, geometric dimension of tube and tubesheet and expansion pressures. There are two types of tube layout patterns, triangular and square, which are frequently used for heat exchangers. The purpose of the present work is to examine the superior tube layout patterns considering the joints quality by comparing numerical results from sensitivity analyses which were performed for both of tube layout patterns.

Keywords

Tube;Tubesheet;Tube Layout Patterns;Hydraulic Expansion;Contact Pressure;Residual Stress

References

  1. ASME, PVP v.139 Effect of Boundary Conditions on the Tube-Tubesheet Joint Annulus Model=Finite Element Analysis Wang, Y.;Soler, A.I.
  2. Journal of Pressure Vessel Technology v.109 Evaluation of Tube-to-Tubesheet Junctions Jawad, M.H.;Clarkin, E.J.;Schuessler, R.E.
  3. ASME, PVP v.175 Residual Stress in Transitions Zone of Heat Exchanger Tubes Updike, D.P.;Kalnins, A.;Caldwell, S.M.
  4. ASME, PVP v.173 Finite Element Analysis of Hydraulically Expanded Tube-to-Tubesheet Joints : A Parametric Study Chaaban, A.;Morin, E.;Ma, H.;Bazergui, A.
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