Elastic-plastic Finite Element Analyses of Fatigue Crack Growth in Mode I and Mode II Conditions PDF Download

Author: Satyanadham Atluri
Publisher:
ISBN:
Category : Deformations (Mechanics)
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 88

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Author: Valery N. Shlyannikov
Publisher: Springer Science & Business Media
ISBN: 3540458360
Category : Technology & Engineering
Languages : en
Pages : 255

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My wife Tatyana, daughter Mariya, son Alexandr It is well known that the mixed-mode conditions appear when the direction of the applied loading does not coincide with the orthogonal K,-Kn-Km space. In general, in the industrial practice the mixed-mode fracture and the mixed-mode crack growth are more likely to be considered the rule than the exception. Miller et al. considers that cracks can grow due to a mixture of processes (ductile and brittle), mechanisms (static, fatigue, creep) and loading modes (tension, torsion, biax ial/multiaxial). Additionally mixed-mode crack-extension can be affected by many other considerations such as artifact geometry (thin plates, thick shells, and the size, shape and orientation of the defect), environmental effects (temperature, gaseous and liquid surroundings), material state (crystallographic structure, heat treatment and route of manufacture) and stress conditions (out-of-phase and ran dom loading effects). The main feature of the mixed-mode fracture is that the crack growth would no longer take place in a self-similar manner and does not follow a universal trajec tory that is it will grow on a curvilinear path. There are various fracture criteria, which predict the behavior of cracks in brittle and ductile materials loaded in combined modes. Linear elastic fracture mechanics (LEFM) criteria predict basi cally the same direction for crack propagation. Cracks in brittle materials have been shown to propagate normal to the maximum tangential stress. In ductile ma terials yielding occurs at the crack tip and LEFM is no longer applicable.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 956

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Author: I. Milne
Publisher: Elsevier
ISBN: 0080437494
Category :
Languages : en
Pages : 749

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Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 400

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Author: Satya N. Atluri
Publisher:
ISBN:
Category :
Languages : en
Pages : 46

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This is a summary of research performed in the areas: (a) development of two-dimensional hybrid finite element procedures to calculate stress intensity factors corresponding to general r to the minus alpha stress singularities in isotropic as well as anistropic materials; (b) study of the convergence of the assumed displacement hybrid finite element procedure in fracture mechanics problems; (c) development of a three-dimensional hybrid finite element procedure to calculate the elastic combined mode stress-intensity factors K1, K2 and K3 that vary along an arbitrarily curved three-dimensional crack front; (d) hybrid finite element solutions of fundamental three-dimensional crack problems; (e) development of a two-dimensional finite element procedure for analyzing plane problems of fracture involving large-scale yielding conditions and under cyclic loading; (f) study of the J-integral as a ductile fracture initiation condition; (g) studies of finite deformation effects near the crack-tip; (h) analysis of stable crack growth under rising load and study of criteria for loss of stability of growth in ductile materials; and (i) elastic-plastic analysis of effects of crack closure on fatigue crack growth rates. (Author).

Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1080

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Author: I. Milne
Publisher: Elsevier
ISBN: 0080441556
Category : Technology & Engineering
Languages : en
Pages : 539

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Author: Keith John Miller
Publisher: ASTM International
ISBN: 9780803104440
Category : Technology & Engineering
Languages : en
Pages : 760

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