| High-Cycle Fatigue and Time-Dependent Failure in Metallic Alloys for Propulsion Systems |
01 SEP 1999 |
48 pages |
| Authors:
Robert O. Ritchie; Subra Suresh; John W. Hutchinson; Walter W. Milligan; Anthony W. Thompson; CALIFORNIA UNIV BERKELEY
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 | This program is focused on the definition, microstructural characterization and mechanism-based modeling of the limiting states of damage associated with the onset of high-cycle fatigue failure in titanium and nickel- base alloys for propulsion systems. Both experimental and theoretical studies are aimed at three areas, namely HCF/LCF interactions, the role of notches and foreign object damage, and fretting fatigue. The approach is to combine new experimental techniques for characterizing microstructural ... |
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| Crack Deflection at an Interface Between Dissimilar Elastic Materials |
89 |
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| Authors:
Ming-Yuan He; John W. Hutchinson; ACADEMIA SINICA BEIJING (CHINA)
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 | A crack impinging an interface joining two dissimilar materials may arrest or may advance by either penetrating the interface or deflecting into the interface. The competition between deflection and penetration is examined in this paper when the materials on either side of the interface are elastic and isotropic. The energy release rate for the deflected crack is compared with the maximum energy release rate for the penetrating crack. The results ... |
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| On Steady Quasi-Static Crack Growth. |
APR 1974 |
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| Authors:
John W. Hutchinson; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| Aspects of crack growth in an elastic-plastic material under quasi-static, steady conditions are investigated for plane problems. A path-independent line integral is identified for the steady problem which generalizes the J-integral of deformation theory plasticity to incremental theories of plasticity. Implications of the integral for small scale yielding crack growth are discussed. A model study is made of the effect on the growth process of the residual plastic wake left ... |
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| Fully Plastic Crack Problems: The Center-Cracked Strip under Plane Strain. |
FEB 1974 |
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| Authors:
Neil L. Goldman; John W. Hutchinson; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| Crack problems are formulated for solids characterized by a pure power hardening relation between the stresses and the strains. For such problems there are simple functional relationships between the amplitude of the dominant crack-trip singularity, as measured by the path-independent J-integral, and the applied load, the load point displacement, and the crack opening displacement. The solutions are valid for both incremental and deformation theories of plasticity; they also apply to ... |
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| Plastic Analysis of Mixed Mode Plane Stress Crack Problems, |
SEP 1973 |
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| Authors:
John W. Hutchinson; Choon-Fong Shih; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| Two parameters are identified for characterizing the deformation in the plastic zone near the tip of a crack when mixed mode conditions prevail. Details of the near-tip stress and strain distributions are presented for hardening materials in which a diffuse plastic zone occurs under plane stress conditions. For small scale yielding the two near-tip parameters are related to the two elastic stress intensity factors for combined Mode I and Mode ... |
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| Plastic Buckling. |
JUL 1973 |
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| Authors:
John W. Hutchinson; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| A survey of plastic buckling is given. Emphasis is placed on post-buckling behavior and imperfection-sensitivity in the plastic range, although the extent to which bifurcation load predictions depend on the choice of plasticity theory is reviewed at some length. Behavior of discrete and continuous structures is introduced by way of several simple models and a general treatment is presented for the most commonly used theory of plates and shells. A ... |
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| Finite Strain Analysis of Elastic-Plastic Solids and Structures. |
JUL 1973 |
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| Authors:
John W. Hutchinson; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| A review is given of one approach to the formulation of equations for elastic-plastic solids at finite strains which lends itself to numerical analysis. A generalization of J2 flow theory to large strains is given which is in a form convenient for applications. Several aspects of the analysis of necking in tension are discussed from this point of view. Applications of the formulation to nonlinear plate and shell theory are ... |
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| DYNAMIC BUCKLING OF IMPERFECTION-SENSITIVE STRUCTURES. |
JUN 1964 |
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| Authors:
Bernard Budiansky; John W. Hutchinson; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| Consideration is restricted to elastic buckling under suddenly applied dead loads maintained at a constant magnitude. Following a discussion of criteria for dynamic buckling, the implications of some simple imperfectionsensitive models are discussed. Next, on the basis of Koiter's theory of post-buckling behavior general approximate theories of dynamic buckling are formulated and their relations to the simple models are studied. Finally, as particular examples, analyses are made of the dynamic ... |
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