Model for fatigue life estimation under multiaxial random loading and its verification based on fatigue tests results

• Autorzy: Będkowski W.
• Konferencja: Konferencja mechaniki pękania / sympozjum (X ; 11-14.09.2005 ; Opole-Wisła, Polska
• Języki publikacji: EN

Abstrakty

EN

The paper presents the procedure for fatigue life estimation, which can be applied for complex service loading of structural elements. Four multiaxial criteria and method of variance for critical plane determination are described. On the basis of fatigue tests for cylindrical specimens made of aluminum alloy PA6 under constant amplitude and random axial with torsional loading, the results of comparison calculated and experimental fatigue lives are presented. The criterion of maximum combination of normal and shear stresses on the critical plane gave the best results.

Słowa kluczowe

EN

fatigue life; aluminium alloy PA6

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Mechanika / Politechnika Opolska
• Rocznik: 2005
• Tom: z. 82
• Strony: 21--28
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Będkowski W.

• Technical University of Opole

Bibliografia

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• [2] Dang VAN K., Macro-Micro Approach in High-Cycle Multiaxial Fatigle, in: Advance in Multiaxial Fatigue, ASTM STP 1191, Eds. D.L.McDowell and R.Ellis, ASTM, Philadelphia, 1993, pp.120-130.
• [3] WANG C.H., BROWN M.W., Life Prediction Techniques for Variable Amplitudę Multiaxial Fatigue - Part 1: Theories, J. Engng. Mater. and Technology, Vol.l 18, 1996, pp.367-370.
• [4] MOREL F., RAGANATHAN N., PETIT J., BIGNONNET A., A Mesoscopic Approach for Fatigue Life Prediction undr Multiaxial Loading, in: Multiaxial Fatigue and Fracture, Eds. E. Macha, W. Będkowski and T.Łagoda, ESIS Publication 25, Elsevier-Netherlands, 1999, pp.87-100.
• [5] WEBER B., CLEMENT JG., KENMEUGNE B., ROBERT J.-L., On Global Stress-Based Approach for Fatigue Assessment under Multiaxial Random Loading, in: Engineering Against Fatigue, Eds.J.H.Beynon, M.W.Brown,R.E.Smith,T.C.Lindley,B.Tomkins, A.A.B.,1999,pp.407-414.
• [6] ŁAGODA T., MACHA E., BĘDKOWSKI W., A Critical Piane Approach Based on Energy Concepts: Application to Biaxial Random Tension-Com-pression High-Cycle Fatigue Regime, Int. J. Fatigue 21, 1999, pp.431-443.
• [7] BĘDKOWSKI W., LACHOWICZ C, ŁAGODA T., MACHA E., OHNAMI M., SAKANE M., WIELOOSIOWE ZMĘCZENIE LOSOWE ELEMENTÓW MASZYN I KONSTRUKCJI Część I. Płaszczyzny złomu próbek krzyżowych w warunkach dwuosiowego zmęczenia niskocyklowego i wysokiej temperatury estymacja metodą wariancji i weryfikacja eksperymentalna, Z.N. WSI, Studia i Monografie z.63, Opole 1993, s. 128.
• [8] BĘDKOWSKI W., Determination of Critical Piane and Effort Criterion in Fatigue Life Evaluation for Materials under Multiaxial Random Loading. Experimental Verification Based on Fatigue Tests of Cruciform Specimens, 4lh ICB/MF, Paris 1994, Vol.I, pp.435-447.
• [9] BĘDKOWSKI W., MACHA E., Maximum Normal Stress Fatigue Criterion Applied to Random Triaxial Stress State, Theoretical and Applied Fracture Mechanics, Vol.7, No 2, 1987, pp.89-107.