Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Effect of Bend Angle on the Behavior of pipe Bend under Internal Pressure and In-Plane Bending toads

내압과 내면 굽힘하중 조건에서 곡관의 거동에 미치는 굽힘각의 영향

  • Kim Jin-Weon (Department of Nuclear Engineering, Chosun University) ;
  • Na Man-Gyun (Department of Nuclear Engineering, Chosun University)
  • Published : 2005.06.01
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Abstract

This study performed finite element analysis on the pipe bend with various bend angles under loading conditions of internal pressure and combined pressure and bending, to investigate the effect of bend angle on the collapse behavior of pipe bend and on the stress state in the bend region. In the analysis, the pipe bends with bend angle of $5\~90^{\circ}$ were considered, and the bending moment was applied as in-plane closing and opening modes. From the results of analysis, it was found that the collapse moment of pipe bend increases with decreasing bend angle. As the bend angle decreases, also, the equivalent stress at intrados region increases regardless of bending mode. Under closing mode bending especially, the increase in stress at intrados is significant so that the maximum stress region moves from crown to intrados with decreasing bend angle.

Keywords

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