Fatigue "safe-life" criterion for metal elements under multiaxial constant and periodic loads

• Autorzy: Kolenda J.
• Języki publikacji: EN

Abstrakty

EN

Periodic stress with Cartesian components given in the form of Fourier series is consideŹred. To account for the mean stress effect the generalised Soderberg criterion for ductile materials is employed. An equivalent stress with synchronous components is defined by means of the equivalence conditions based on the average strain energy of distortion. The fatigue "safe-life" design criterion is formulated which covers the conditions of both static strength and fatigue safety and includes material constants that have simple physical inŹterpretation, can be determined by uniaxial tests, are related directly to the applied loads and can reflect material anisotropy.

Słowa kluczowe

EN

design criteria; multiaxial loading; periodic stress; mean stress effect

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2004
• Tom: nr 2
• Strony: 23--26
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Kolenda J.

• Faculty of Ocean Engineering and Ship Technology Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, POLAND

Bibliografia

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• 3. Almar-Naess A. (Ed.): Fatigue handbook. Offshore steel structures. Tapir Publishers. Trondheim, 1985
• 4. Blake A. (Ed.): Handbook of mechanics. materials and structures. Wiley & Sons. New York, 1985
• 5. Hu Qiao, Xu Hao: Two-parameter nominal stress approach. Int. J. Fatigue. No 5, 1995
• 6. Kolenda J.: Average-distortion-energy strength hypothesis. Proc. of the 17th Symp. on Fatigue and Fracture Mechanics. Bydgoszcz-Pieczyska, 1998
• 7. Kolenda J.: Generalised safety factor and reliability index in a multiaxial state of static stress. Marine Technology Transactions, Vol. 3, 1992
• 8. Kolenda J.: Safety factor and reliability index in a generał state of cyclic stress. Marine Technology Transactions, Vol. 3, 1992
• 9. Kolenda J.: A new design criterion of steel elements at multiaxial constant and in-phase loadings. Proc. of the 18th Symp. on Fatigue and Fracture Mechanics. Bydgoszcz-Pieczyska, 2000
• 10. Cempel C: Theory of energy transformation systems and their application in diagnostic of operating systems. Applied Math. and Computer Sciences, No 3, 1993
• 11. Kolenda J.: Application of the theory of energy transformation systems to fatigue assessment of steel elements under multiaxial periodic loading. Marine Technology Transactions, Vol. 12, 2001