Fatigue Crack Growth Analysis of Steel Deckplates Under Bending Stress

휨응력을 받는 바닥강판의 피로균열진전해석

  • 최준혁 (한양대학교 토목공학과) ;
  • 경갑수 (한국도로공사) ;
  • 최동호 (한양대학교 도시환경건설공학과) ;
  • 장동일 (한양대학교 도시환경건설공학과)
  • Received : 1999.06.21
  • Published : 1999.08.27

Abstract

The fatigue crack growth analysis based on the fracture mechanics is useful to the estimation of the fatigue life on welded structures under cyclic loading. The analysis procedure in fatigue crack growth under uniform axial loading is applicable to bending fatigue problem as well. The intent of the present study is to show the procedure for calculating the fatigue crack propagation lifetimes of deckplates under bending stress and to explain the crack growth rates for the two dimensional crack problems. It is shown that the fatigue crack grows at a decreasing rate and the fatigue life depends on the initial crack length and the crack shape. The numerically predicted crack growth agree with the experimental data.

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