Mode I Stress Intensity Factors for Surface Planar Cracks in Circular Bodies Under Rotary Bending

• Autorzy: Król, R. , Grabowski, P.
• Języki publikacji: EN

Abstrakty

EN

A method of calculating stress intensity factors, using point-load weight function, for twodimensional surface cracks subjected to rotary bending, applied to circular objects is described in the paper. The research has regarded planar cracks in finite circular bodies, which may occur e.g. in shaft cross sections of belt-driven machines. This type of drive is widely spread in the technological lines, therefore the research on improving its fatigue durability is crucial for development of this branch of industry. One of a few advantages of the method which has been applied is the possibility to evaluate stress intensity factor (SIF) values precisely in a quick and simple way. The paper shows the computation for various parameters of shape and size of shafts and cracks. The presented method usually yields conservative results compared to reference values obtained for the same configurations with the finite element method, which gives a good perspective to use such calculated SIFs for life assessment. Checking of these possibility is an essential issue of the work described in the paper.

Słowa kluczowe

EN

stress intensity factor; weight function; fatigue crack growth

• Czasopismo: Machine Dynamics Research
• Rocznik: 2016
• Tom: Vol. 40, No. 4
• Strony: 19--31
• Opis fizyczny: Bibliogr. 4 poz., rys., tab., wykr.

Twórcy

autor

Król, R.

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

autor

Grabowski, P.

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

Bibliografia

• 1. Glinka, G. and Reinhardt,W. (2000). Calculation of stress intensity factors for cracks of complex geometry and subjected to arbitrary nonlinear stress fields. In Fatigue and Fracture Mechanics: 31st Volume, pages 348–370. ASTM International.
• 2. Jankowiak, A. (2007). Analiza wzrostu pęknięć zmęczeniowych z wykorzystaniem dwuwymiarowych funkcji wagowych. PhD dissertation Politechnika Warszawska, Wydział Samochodów i Maszyn Roboczych.
• 3. Murakami, Y. (1987). Stress Intensity Factors Handbook, Vol. 2. Pergamon Press.
• 4. Reinhardt,W. and Glinka, G. (1997). Program WF2D (vol.1.0) for calculation of SIF with the two-dimensional weighting function method. SAFED.