재료 내에 존재하는 크랙의 방향과 길이에 따른 강도 해석
A Strength Analysis due to Directions and Lengths of a Crack Existed in Materials
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In this study, the property of crack growth in structural steel is investigated according to length and angle of crack at the analysis result of model. Strain energy, deformation and stress obtained by finite element analysis are compared with various configuration of crack. Stress intensity factors as fracture toughness are calculated by the basis of strain energy, deformation and stress. As there are almost no errors by comparing stress intensity factors with those from the standard formula, these calculated factors can be confirmed in order to be applied at real structure. In case cracks or holes at structure are existed, the fatigue damage possibility can be examined by use of this study result.
Abstract
In this study, the property of crack growth in structural steel is investigated according to length and angle of crack at the analysis result of model. Strain energy, deformation and stress obtained by finite element analysis are compared with various configuration of crack. Stress intensity factors as fracture toughness are calculated by the basis of strain energy, deformation and stress. As there are almost no errors by comparing stress intensity factors with those from the standard formula, these calculated factors can be confirmed in order to be applied at real structure. In case cracks or holes at structure are existed, the fatigue damage possibility can be examined by use of this study result.
참고문헌 (8)
- 박은희, "Stochastic Characteristics of Fatigue Crack Growth Resistance of SM45C Steel", International Journal of Automotive Technology, 8(5), pp.623~628 (2007), 한국자동차공학회
- Dai-Soon Kwak, "Effect of a Single-Applied Overload on Fatique Crack Growth Behavior in Laser-welded Sheet Metal", International Journal of Precision Engineering and Manufacturing, 7(3), pp.30~34 (2006), 한국정밀공학회
- J. LIU, "SIMPLIFIED FATIGUE DURABILITY ASSESSMENT FOR REAR SUSPENSION STRUCTURE", International Journal of Automotive Technology, 11(5), pp.659~664 (2010), 한국자동차공학회
- Swanson, J., "Ansys 12.0" (2009), Ansys Inc, U.S.A
- Yongming, L., "Fatigue Limit Prediction of Notched Components Using Short Crack Growth Theory and an Asymptotic Interpolation Method", Eng. Fract. Mech., 76(15), pp.2317~2331 (2009)
- 최해규, "알루미늄 폼으로 된 이중외팔보 시험편의 파괴 거동에 관한 실험적 연구", 한국기계기술학회지, 14(5), pp.37~41 (2012), 한국기계기술학회
- Norman, E. D., "Engineering Method for Deformation, Fracture, and Fatigue", Mech. Behav. Mater., 2, pp.357~558 (1999)
- 최해규, "알루미늄 폼으로 된 DCB 모델의 피로해석에 관한 연구", 한국기계기술학회지, 14(6), pp.39~43 (2012), 한국기계기술학회