Stress Intensity Factor Analysis of Nozzle Considering Pressure and Heat Transfer on Crack Face

균열면에 작용하는 내압과 열전달의 영향을 고려한 노즐부의 응력확대계수 해석

  • Published : 2000.09.01


In order to investigate the effect of nozzle on stress concentration in pressure vessels, three dimensional finite element analyses were performed. The results were compared with those for corresponding two dimensional axisymmetric finite element analyses. A three dimensional finite element model with a surface crack was also designed to evaluate the effect of internal pressure and heat transfer on crack face, and the resulting stress intensity factors from the finite element analyses were compared with those for ASME Sec. XI and Raju-Newman's stress intensity factor solution. As a result, the validity of currently available stress intensity factor solutions for a surface crack was reviewed in the presence of geometrical complexity, heat transfer and internal pressure.


Finite Element Analysis;Heat Transfer;Internal Pressure;Stress intensity Factor;Surface Crack


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