Theoretical crack path prediction

Fatigue and Fracture of Engineering Materials and Structures - Tập 28 Số 1-2 - Trang 3-12 - 2005
Hans Albert Richard1, M. Fulland2, Manuela Sander1
1Institute of Applied Mechanics, University of Paderborn, Pohlweg 47-49, 33098 Paderborn, Germany
2Westfälisches Umwelt Zentrum, Pohlweg 55, 33098 Paderborn, Germany

Tóm tắt

ABSTRACTIn many practical cases, the crack growth leads to abrupt failure of components and structures. For reasons of a reliable quantification of the endangerment due to sudden fracture of a component, therefore, it is of enormous importance to know the threshold values, the crack paths and the growth rates for the fatigue crack growth as well as the limiting values for the beginning of unstable crack growth (fracture toughness). This contribution deals with the complex problem of a—however initiated—crack, that is subjected to a mixed‐mode loading. It will present the hypotheses and concepts, which describe the superposition of Mode I and Mode II (plane mixed mode) as well as the superposition of all three modes (Mode I, II and III) for spatial loading conditions. Those concepts admit a quantitative appraisal of such crack situations and a characterization of possible crack paths.

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Thông tin xuất bản

Fatigue and Fracture of Engineering Materials and Structures

Tập 28 Số 1-2

3-12

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