Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Crack Growth Analysis of Dissimilar Metal Weld using a Numerical Method

수치해석방법을 이용한 이종금속용접부에서의 균열성장해석

  • 김상철 (세명대학교 공과대학 보건안전공학과) ;
  • 김만원 (지엔이씨 건전성 평가팀)
  • Published : 2010.02.28
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Abstract

In this paper crack propagation analyses in the dissimilar metal weldment of a nozzle were performed using a finite element alternating method (FEAM). A two-dimensional axisymmetric finite element nozzle model was prepared and welding simulation including the thermal heat transfer analysis and the thermal stress analysis was performed. Initial cracks were inserted at weld and heat affected zone in the finite element model which has welding residual stress distribution obtained from the welding simulation. To calculate crack propagation trajectories of these cracks, a new fatigue crack evaluation module was developed in addition to the previous FEAM program. With the new FEAM fatigue crack evaluation module, crack propagation trajectory and crack growth time were calculated automatically and effectively.

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References

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  2. PWSCC Crack Growth Analysis Using Numerical Method in the Inner Surface Repair Weld of A Nozzle vol.29, pp.2, 2011, https://doi.org/10.5781/KWJS.2011.29.2.064