Cyclic Stress-Strain Response of Metals and Alloys liadelling on a Microstructural Basis

• Autorzy: Christ H.
• Konferencja: The First European Summer School of Fatique and Fracture (ESSFF1) and The Ninth Polish-Ukrainian-German Summer of Fracture Mechanics (SSFM9) on NEW RESULTS IN FATIGUE AND FRACTURE. Vol.2 (1,9;19-26.06.2005;Zakopane;Polska)
• Języki publikacji: EN

Abstrakty

EN

The observation of a heterogeneous dislocation distribution established in metals and alloys under cyclic-loading conditions indicates a locally varying yield stress. Hence, it seems to be justified to consider even a single-phase material as a composite consisting of elements with different flow stresses. This idea is used in order to describe and predict the cyclic stress-strain behaviour of metalJic materials. The range of applicability of multi-component models with respect to the dislocation slip character and the loading conditions is defined. A statistical mathe-matical treatment leads to equations which allow one to determine the distribution function of yield stresses directly from a single branch of a hysteresis loop. The procedurę of the stress-strain path calculation is illustrated by means of examples and a comparison of calculated and experimentally obtained results is presented.

Słowa kluczowe

EN

heterogeneous dislocation distribution; metallic materials; loading conditions; stresses directly from

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Mechanika / Politechnika Opolska
• Rocznik: 2005
• Tom: z. 84
• Strony: 53--72
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr.

Twórcy

autor

Christ H.

• Institut für Werkstofftechnik, Universität Siegen, Germany

Bibliografia

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