Modeling of Complex Fatigue Growth of Cracks in Plates

• Autorzy: Jankowiak A. , Jakubczak H.
• Konferencja: International Conference on Modelling and Simulation of the Friction Phenomena in the Physical and Technical Systems "FRICTION 2008" (5 ; 31.05-1.06.2008 ; Warsaw, Poland) ; French-Polish Seminar of Mechanics (16 ; 31.05-1.06.2008 ; Warsaw, Poland)
• Języki publikacji: PL

Abstrakty

EN

Analysis of crack growth in mechanical components with use of analytical methods requires usually simplification regarding the crack shape, component geometry, and stress distribution. More complicated tasks, especially related to cracks with arbitrary contour shape and/or undergoing in service non-uniform stress distribution need numerical methods of crack growth analysis. Alternatively, an advantage can be taken of the method based on the calculation of stress intensity factor (SIF) using the point-load weight functions (WF2D). Capability of this method is presented in the paper on examples of complex fatigue crack growth. Comparisons of results obtained using the WF2D and classical approach are presented as well.

Słowa kluczowe

PL

współczynnik intensywności naprężeń; pęknięcia zmęczeniowe; analiza wzrostu pęknięć zmęczeniowych; trwałość zmęczeniowa; zmęczenie materiałów; rozkład naprężeń

EN

stress intensity factor; fatigue crack growth; structural features; fatigue life; materials fatigue; stress distribution

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2008
• Tom: Vol. 32, No. 3
• Strony: 34--33
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Jankowiak A.

autor

Jakubczak H.

• Warsaw University of Technology. Institute of Construction Machinery Engineering,

Bibliografia

• Glinka, G., Reinhardt, W., 2000, Calculation of Stress Intensity Factors for Cracks of Complex Geometry and Subjected to Arbitrary Nonlinear Stress Fields, Fatigue and Fracture Mechanics, 31, ASTM STP 1389, West Conshohocken, PA, 348-370.
• Jakubczak, H., Jankowiak, A., 2003, Mode I Stress Intensity Factors for Cracks in Arbitrary Stress Fields, Machine Dynamics Problems, 27, No 4, 7-16.
• Jankowiak, A., Jakubczak, H., 2006, Crack Contour Approximation for Life Assessment Based on 2D Weight Function, Machine Dynamics Problems, 30, No 2, 54-62.
• Jankowiak, A., 2007, Analysis of Crack Growth Using the Two Dimensional Weight Function, PhD thesis, Warsaw University of Technology (in Polish).
• Jankowiak, A., Jakubczak, H., 2008, Comparison of Fatigue Crack Growth of Cracks with Actual and Equivalent Shapes, Przegląd Mechaniczny, No 4 (in Polish).
• Wu, Z., Jakubczak, H., Glinka, G., Molski, K., Nilsson L., 2003, Determination of Stress Intensity Factors for Cracks in Complex Stress Fields, The Archive of Mechanical Engineering, L, Nr 1, 41-67.